{"title":"Gourmet Mushroom Grow Kits, Spawn \u0026 Cultures","description":"\u003cp\u003eOur \u003cspan class=\"b\"\u003egourmet mushroom grow kits\u003c\/span\u003e and cultures are built for one thing: fresh, flavorful, kitchen-ready mushrooms grown right at home. Whether you want a first harvest with zero setup or lab-grade genetics to scale a gourmet grow, everything here is made fresh and ready to fruit.\u003c\/p\u003e\n\u003cp\u003eNew growers do best starting with a ready-to-fruit \u003ca href=\"\/collections\/all-in-one-bags\"\u003eall-in-one grow bag\u003c\/a\u003e — inoculated, colonized, and ready to fruit straight out of the box in varieties like oyster, shiitake, and lion's mane. Ready to work from genetics? Our \u003ca href=\"\/collections\/liquid-culture-syringes\"\u003eliquid culture syringes\u003c\/a\u003e and colonized grain spawn cover the full gourmet lineup, and \u003ca href=\"\/collections\/grow-kits\"\u003ecomplete grow kits\u003c\/a\u003e give you an all-in-one system to fruit them in. Exploring wellness varieties or advanced bulk growing instead? See our \u003ca href=\"\/collections\/functional-mushrooms\"\u003efunctional mushrooms\u003c\/a\u003e and \u003ca href=\"\/collections\/exotic-mushrooms\"\u003eexotic \u0026amp; bulk grow kits\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"live-mushroom-culture-on-agar-slant-your-choice","title":"Live Mushroom Culture on Agar Slant (Your Choice)","description":"\u003cp\u003e\u003cstrong\u003eLive Mushroom Culture on Agar Slant (Your Choice)\u003c\/strong\u003e\u003cem\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAgar slants\u003c\/strong\u003e are the gold standard for long-term mycelium storage and the perfect way to kick off your next grow. Used by commercial cultivators worldwide, each slant features a high-nutrient agar blend that allows you to pull 5–6 transfers from a single tube—ideal for agar plate or liquid culture inoculations.\u003c\/p\u003e\n\u003cp\u003eWhether you're storing genetics for future use or starting a fresh batch, our agar slants ensure reliable, contamination-resistant preservation for up to 1–2 years. These are first-generation live cultures, carefully prepared to preserve strain integrity and promote vigorous mycelial growth.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eKit Includes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e    1x \u003cstrong\u003e15ml Agar Slant\u003c\/strong\u003e with your chosen species\u003c\/li\u003e\n\u003cli\u003e    1x \u003cstrong\u003eDisposable Agar Punch Tool\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e    1x \u003cstrong\u003eSterile #11 Scalpel Blade\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhy Choose Agar Slants?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e    Extended Shelf Life: \u003c\/strong\u003eStore your culture for \u003cstrong\u003e1+ years\u003c\/strong\u003e without frequent subculturing\u003c\/li\u003e\n\u003cli\u003e    \u003cstrong\u003eMultiple Transfers:\u003c\/strong\u003e Get 5–6 transfers to new agar plates or LC jars\u003c\/li\u003e\n\u003cli\u003e   \u003cstrong\u003e Minimal Risk: \u003c\/strong\u003eReduced contamination and dehydration due to sterile, sealed environment\u003c\/li\u003e\n\u003cli\u003e  \u003cstrong\u003e  Commercial-Grade:\u003c\/strong\u003e Used by professional labs for dependable long-term storage\u003c\/li\u003e\n\u003cli\u003e  \u003cstrong\u003e  Space Saving: \u003c\/strong\u003eCompact, efficient, and easy to organize\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePerfect For:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e    Long-term mycelium preservation\u003c\/li\u003e\n\u003cli\u003e    Starting liquid cultures\u003c\/li\u003e\n\u003cli\u003e    Transferring to agar plates\u003c\/li\u003e\n\u003cli\u003e    Mycology labs and strain libraries\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Myco Labs","offers":[{"title":"Lion's Mane","offer_id":46142925832341,"sku":"SLT1","price":15.0,"currency_code":"USD","in_stock":true},{"title":"Maitake","offer_id":46142925865109,"sku":"SLT2","price":15.0,"currency_code":"USD","in_stock":true},{"title":"Pink Lion's Mane","offer_id":46142925897877,"sku":"SLT3","price":35.0,"currency_code":"USD","in_stock":true},{"title":"Blue Oyster","offer_id":46142925930645,"sku":"SLT4","price":15.0,"currency_code":"USD","in_stock":true},{"title":"Turkey Tail","offer_id":46142925963413,"sku":"SLT5","price":16.0,"currency_code":"USD","in_stock":true},{"title":"Cordyceps Militaris","offer_id":46142925996181,"sku":"SLT6","price":17.0,"currency_code":"USD","in_stock":true},{"title":"Pink Oyster","offer_id":46142926028949,"sku":"SLT7","price":14.0,"currency_code":"USD","in_stock":true},{"title":"Wood Ear","offer_id":46142926061717,"sku":"SLT8","price":14.0,"currency_code":"USD","in_stock":true},{"title":"Chestnut","offer_id":46142926094485,"sku":"SLT9","price":30.0,"currency_code":"USD","in_stock":true},{"title":"Red Reishi","offer_id":46142926127253,"sku":"SLT10","price":15.0,"currency_code":"USD","in_stock":true},{"title":"Amanita Muscaria","offer_id":46888001863829,"sku":"AM44","price":15.0,"currency_code":"USD","in_stock":true},{"title":"Pioppino","offer_id":46888009728149,"sku":"PSL1","price":15.0,"currency_code":"USD","in_stock":true},{"title":"Phoenix Oyster","offer_id":46888010055829,"sku":"PHSL1","price":15.0,"currency_code":"USD","in_stock":true},{"title":"King Trumpet Oyster","offer_id":46888021164181,"sku":"KTSL1","price":15.0,"currency_code":"USD","in_stock":true},{"title":"King Blue Oyster","offer_id":46888023752853,"sku":"KBSL1","price":15.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Agar_slant_final.jpg?v=1745528192"},{"product_id":"24-oz-premium-super-quick-colonizing-5-grain-jar","title":"24 oz Premium Super Quick-Colonizing 5-grain Jar","description":"\u003cstyle\u003e\n@keyframes fadeInSoft {\n  from { opacity: 0; transform: translateY(10px); }\n  to { opacity: 1; transform: translateY(0); }\n}\n.fade-in-media {\n  animation: fadeInSoft 1.2s ease-out forwards;\n  opacity: 0;\n}\n.spec-table,\n.usage-table {\n  width: 100%;\n  border-collapse: collapse;\n  margin: 18px 0 24px 0;\n  font-size: 15px;\n}\n.spec-table th,\n.spec-table td,\n.usage-table th,\n.usage-table td {\n  border: 1px solid #e5e5e5;\n  padding: 10px 12px;\n  text-align: left;\n  vertical-align: top;\n}\n.spec-table th,\n.usage-table th {\n  background: #f7f7f7;\n}\n.info-callout {\n  background: #f8fafc;\n  border: 1px solid #e5e7eb;\n  border-radius: 8px;\n  padding: 16px 18px;\n  margin: 20px 0;\n}\n\u003c\/style\u003e\n\n\u003cp\u003e\u003cstrong\u003e24oz Premium Super Quick Colonizing 5-Grain Spawn Jar\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLightning-Fast Colonization • Tapered Glass Design • Sterile Grain Spawn\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003c!-- Timeline Image --\u003e\n\u003cdiv style=\"text-align:center; margin: 18px 0 28px 0;\" class=\"fade-in-media\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/24oz_5grain_Jars_timeline.jpg?v=1773500920\" alt=\"24oz super quick colonizing 5-grain spawn jar colonization timeline\" style=\"max-width:100%; height:auto; border-radius:10px; box-shadow: 0 12px 30px rgba(0,0,0,0.12);\"\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eMidwest Grow Kits 24oz Super Quick Colonizing 5-Grain Spawn Jar\u003c\/strong\u003e is engineered for growers who want faster colonization and easier spawn handling. This sterile grain jar uses a high-performance 5-grain blend combined with a tapered glass jar design that allows the fully colonized grain mass to slide out more easily when it’s time to spawn to bulk substrate.\u003c\/p\u003e\n\n\u003cp\u003eCompared to traditional 32oz jars, the smaller 24oz size often allows for \u003cstrong\u003efaster colonization times\u003c\/strong\u003e, while the specialized grain blend creates more inoculation points for aggressive mycelium growth.\u003c\/p\u003e\n\n\u003cdiv class=\"info-callout\"\u003e\n\u003cp style=\"margin:0;\"\u003e\u003cstrong\u003eWhy growers love these jars:\u003c\/strong\u003e The smaller jar size helps speed up colonization, while the tapered glass design makes removing the colonized spawn easier when transferring to bulk substrate, monotubs, or grow bags.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eWhy Choose the 24oz Super Quick Colonizing Jar?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFaster Than Larger Grain Jars\u003c\/strong\u003e – Smaller jar size supports quicker colonization cycles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTapered Glass Jar Design\u003c\/strong\u003e – Allows the colonized grain to slide out more easily once fully grown.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid Colonization Grain Blend\u003c\/strong\u003e – High ratio of smaller grains increases inoculation points.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean \u0026amp; Easy Inoculation\u003c\/strong\u003e – Self-healing injection port works with spores or liquid culture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable Gas Exchange\u003c\/strong\u003e – Premium 0.22 micron filter disk maintains airflow while protecting sterility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGreat for Bulk Growing\u003c\/strong\u003e – Ideal for monotubs, trays, casing mix, and bulk substrate expansion.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eOne (1) 24oz Tapered Glass Grain Spawn Jar\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremium Quick Colonizing 5-Grain Blend\u003c\/strong\u003e featuring:\n  \u003cul\u003e\n    \u003cli\u003eNutrient-enriched rye berries\u003c\/li\u003e\n    \u003cli\u003eHigh ratio of smaller grains for faster colonization\u003c\/li\u003e\n    \u003cli\u003eMineral water fortified with gypsum and diammonium phosphate\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.22 Micron Filter Disk\u003c\/strong\u003e for sterile gas exchange\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-Healing Injection Port\u003c\/strong\u003e for clean inoculation\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePressure Sterilized at 15 PSI for 120 Minutes\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\n\u003ctable class=\"spec-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eComponent\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eJar Size\u003c\/td\u003e\n\u003ctd\u003e24oz Tapered Glass Jar\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003eSingle Jar\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eGrain Blend\u003c\/td\u003e\n\u003ctd\u003eQuick colonizing 5-grain blend with nutrient enriched rye berries\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eAdditives\u003c\/td\u003e\n\u003ctd\u003eGypsum and diammonium phosphate mineral mix\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003e0.22 micron filter disk\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eInjection Port\u003c\/td\u003e\n\u003ctd\u003eSelf-healing port for spores or liquid culture\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eSterilization\u003c\/td\u003e\n\u003ctd\u003e15 PSI for 120 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eAverage Colonization Time\u003c\/td\u003e\n\u003ctd\u003e14–20 days under proper conditions\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eRecommended Inoculation\u003c\/td\u003e\n\u003ctd\u003e3–4cc spores or liquid culture\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eRecommended Usage Chart\u003c\/h2\u003e\n\n\u003ctable class=\"usage-table\"\u003e\n\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003cth\u003eRecommended Amount\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\n\u003ctbody\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eSpore Syringe\u003c\/td\u003e\n\u003ctd\u003e3–4cc per jar\u003c\/td\u003e\n\u003ctd\u003eInject through the self-healing port\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eLiquid Culture\u003c\/td\u003e\n\u003ctd\u003e3–4cc per jar\u003c\/td\u003e\n\u003ctd\u003eOften produces faster colonization\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eBulk Substrate Ratio\u003c\/td\u003e\n\u003ctd\u003e2–3 jars per 5 lbs substrate\u003c\/td\u003e\n\u003ctd\u003eRecommended for monotub grows\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eBest Use Case\u003c\/td\u003e\n\u003ctd\u003eMonotubs, trays, grow bags\u003c\/td\u003e\n\u003ctd\u003eIdeal for bulk substrate expansion\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eBuilt for Speed and Easy Spawn Transfer\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003e24oz Super Quick Colonizing 5-Grain Spawn Jar\u003c\/strong\u003e was developed for growers who want both faster colonization and easier spawn handling. The smaller jar size allows quicker growth while the tapered design helps the finished grain spawn slide out more cleanly when it’s time to mix with bulk substrate.\u003c\/p\u003e\n\n\u003cp\u003eThis makes the jar especially useful for growers using \u003cstrong\u003emonotub systems, bulk substrate grows, and casing mix\u003c\/strong\u003e where quick colonization and easy jar handling can help improve workflow and consistency.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eFast Colonizing Grain Spawn for Mushroom Cultivation\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eMidwest Grow Kits 24oz Super Quick Colonizing 5-Grain Jar\u003c\/strong\u003e provides a sterile, ready-to-use spawn option designed for fast colonization and easy transfer into bulk substrate. If you want a grain jar that moves quickly and simplifies spawn transfer, this is one of the most efficient options available.\u003c\/p\u003e\n\u003cdiv style=\"margin: 30px 0; padding: 22px; border-radius: 14px; background: linear-gradient(135deg, #f8fbff, #eef6ff); border: 1px solid #dbeafe;\"\u003e\n  \n  \u003cdiv style=\"display: flex; flex-wrap: wrap; align-items: center; gap: 20px;\"\u003e\n    \n    \u003cdiv style=\"flex: 1 1 260px;\"\u003e\n      \n      \u003ch3 style=\"margin: 0 0 8px; font-size: 22px;\"\u003e\n        New to Grain Spawn?\n      \u003c\/h3\u003e\n      \n      \u003cp style=\"margin: 0 0 14px; font-size: 15px; color: #374151;\"\u003e\n        Learn exactly how to inoculate, incubate, and fully colonize your spawn bags or grain jars with our step-by-step guide.\n      \u003c\/p\u003e\n\n      \u003ca href=\"https:\/\/www.midwestgrowkits.com\/pages\/spawn-bag-grain-jar-guide-how-to-inoculate-incubate-colonize\" style=\"display: inline-block; padding: 12px 18px; background: #1e90ff; color: white; border-radius: 8px; font-weight: 600; text-decoration: none;\"\u003e\n        Read the Full Guide →\n      \u003c\/a\u003e\n\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex: 1 1 180px;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Spawn_bag_guide_hero_1.png?v=1776512883\" alt=\"Spawn Bag and Grain Jar Guide\" style=\"width: 100%; border-radius: 10px;\"\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Midwest Grow Kit's","offers":[{"title":"Default Title","offer_id":45978230227093,"sku":"PQC7","price":7.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/5grain_24oz_single.jpg?v=1745528324"},{"product_id":"3-pack-premium-24-oz-super-quick-colonizing-5-grain-jar-24oz","title":"3-Pack Premium 24 Oz Super-Quick-Colonizing 5-grain Jar (24oz)","description":"\u003cstyle\u003e\n@keyframes fadeInSoft {\n  from { opacity: 0; transform: translateY(10px); }\n  to { opacity: 1; transform: translateY(0); }\n}\n.fade-in-media {\n  animation: fadeInSoft 1.2s ease-out forwards;\n  opacity: 0;\n}\n.spec-table,\n.usage-table {\n  width: 100%;\n  border-collapse: collapse;\n  margin: 18px 0 24px 0;\n  font-size: 15px;\n}\n.spec-table th,\n.spec-table td,\n.usage-table th,\n.usage-table td {\n  border: 1px solid #e5e5e5;\n  padding: 10px 12px;\n  text-align: left;\n  vertical-align: top;\n}\n.spec-table th,\n.usage-table th {\n  background: #f7f7f7;\n}\n.info-callout {\n  background: #f8fafc;\n  border: 1px solid #e5e7eb;\n  border-radius: 8px;\n  padding: 16px 18px;\n  margin: 20px 0;\n}\n\u003c\/style\u003e\n\u003cp\u003e\u003cstrong\u003e3-Pack Premium 24oz Super Quick Colonizing 5-Grain Jars\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLightning-Fast Colonization, Tapered Jar Design \u0026amp; Sterile Grain Spawn for Easy Bulk Growing\u003c\/strong\u003e\u003c\/p\u003e\n\u003c!-- Top Colonization Timeline Image --\u003e\n\u003cdiv class=\"fade-in-media\" style=\"text-align: center; margin: 18px 0 28px 0;\"\u003e\u003cimg style=\"max-width: 100%; height: auto; border-radius: 10px; box-shadow: 0 12px 30px rgba(0,0,0,0.12);\" alt=\"24oz 5-grain spawn jar colonization timeline showing fast mushroom grain jar colonization progress\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/24oz_5grain_Jars_timeline.jpg?v=1773500920\"\u003e\u003c\/div\u003e\n\u003cp\u003eGrow faster with \u003cstrong\u003eMidwest Grow Kits 3-Pack Premium 24oz Super Quick Colonizing 5-Grain Jars\u003c\/strong\u003e. These custom \u003cstrong\u003e24oz tapered glass grain spawn jars\u003c\/strong\u003e are built for growers who want rapid colonization, easy inoculation, and a jar design that makes colonized grain easier to remove when it is ready for bulk substrate or other expansion.\u003c\/p\u003e\n\u003cp\u003eCompared to standard 32oz jars, these 24oz jars are known for \u003cstrong\u003efaster average colonization times\u003c\/strong\u003e thanks to their smaller size, efficient grain mass, and optimized 5-grain blend. The custom tapered shape also helps the colonized jar contents slide out more easily once fully grown, making transfer cleaner and more convenient.\u003c\/p\u003e\n\u003cdiv class=\"info-callout\"\u003e\n\u003cp style=\"margin: 0;\"\u003e\u003cstrong\u003eWhy growers love these jars:\u003c\/strong\u003e They colonize faster than larger 32oz jars, use a high-performance 5-grain blend, and feature a tapered glass design that helps the finished colonized cake slide out with less effort when it is time to spawn to bulk.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch2\u003eWhy Choose Our 24oz Super Quick Colonizing Jars?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Fastest Grain Spawn Product We Sell\u003c\/strong\u003e – Unique jar shape and size helps support quicker average colonization times.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTapered Glass Design\u003c\/strong\u003e – Makes it easier to slide the fully colonized grain mass out of the jar.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid Colonization Blend\u003c\/strong\u003e – High ratio of smaller grains helps create more inoculation points.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean \u0026amp; Easy Inoculation\u003c\/strong\u003e – Self-healing injection port works with spores or liquid culture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable Gas Exchange\u003c\/strong\u003e – Premium 0.22 micron filter disk supports airflow while helping maintain sterility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGreat for Bulk Growing\u003c\/strong\u003e – Ideal for monotubs, trays, casing mix, and bulk substrate expansion.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eThree (3) 24oz Tapered Glass Grain Spawn Jars\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremium 5-Grain Blend\u003c\/strong\u003e featuring:\n\u003cul\u003e\n\u003cli\u003eNutrient-enriched rye berries\u003c\/li\u003e\n\u003cli\u003eA high ratio of smaller grains for fast colonization\u003c\/li\u003e\n\u003cli\u003eSpecial mineral water mix fortified with gypsum and diammonium phosphate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.22 Micron Filter Disk\u003c\/strong\u003e for sterile gas exchange\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-Healing Injection Port\u003c\/strong\u003e for clean inoculation\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePressure Sterilized at 15 PSI for 120 Minutes\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003ctable class=\"spec-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eComponent\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eJar Size\u003c\/td\u003e\n\u003ctd\u003e24oz Tapered Glass Jars\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e3 Jars Per Pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrain Blend\u003c\/td\u003e\n\u003ctd\u003ePremium quick-colonizing 5-grain blend with nutrient-enriched rye berries and a high ratio of smaller grains\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdditives\u003c\/td\u003e\n\u003ctd\u003eGypsum and diammonium phosphate in a mineral water blend\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003e0.22 micron filter disk\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInjection Port\u003c\/td\u003e\n\u003ctd\u003eSelf-healing port for spores or liquid culture\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterilization\u003c\/td\u003e\n\u003ctd\u003e15 PSI for 120 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAverage Colonization Time\u003c\/td\u003e\n\u003ctd\u003eApproximately 14–20 days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Inoculation\u003c\/td\u003e\n\u003ctd\u003e3–4cc per jar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch2\u003eRecommended Usage Chart\u003c\/h2\u003e\n\u003cp\u003eUse this quick chart as a general guide when planning your grow.\u003c\/p\u003e\n\u003ctable class=\"usage-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003cth\u003eRecommended Amount\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpore Syringe per Jar\u003c\/td\u003e\n\u003ctd\u003e3–4cc\u003c\/td\u003e\n\u003ctd\u003eInject through the self-healing port for clean inoculation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLiquid Culture per Jar\u003c\/td\u003e\n\u003ctd\u003e4-6cc\u003c\/td\u003e\n\u003ctd\u003eGreat choice for very fast colonization when using clean culture\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBulk Substrate Ratio\u003c\/td\u003e\n\u003ctd\u003e2–3 jars per 5 lbs of bulk casing mix\u003c\/td\u003e\n\u003ctd\u003eRecommended for monotub and bulk substrate grows\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAverage Colonization Window\u003c\/td\u003e\n\u003ctd\u003e14–20 days\u003c\/td\u003e\n\u003ctd\u003eOften faster than standard 32oz grain jars\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch2\u003eDesigned for Speed and Easy Transfer\u003c\/h2\u003e\n\u003cp\u003eThese jars are built for growers who want both speed and convenience. The smaller 24oz size can colonize more quickly than larger jar formats, while the tapered glass shape makes it easier to remove the finished colonized grain when it is time to break it up or spawn it to bulk substrate.\u003c\/p\u003e\n\u003cp\u003eThat makes these jars an excellent option for growers using \u003cstrong\u003ebulk casing mix\u003c\/strong\u003e, \u003cstrong\u003emonotubs\u003c\/strong\u003e, and other bulk fruiting setups where fast turnaround and easy jar handling can improve the overall workflow.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003ePremium 24oz Grain Spawn Jars for Faster Mushroom Cultivation\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eMidwest Grow Kits 3-Pack Premium 24oz Super Quick Colonizing 5-Grain Jars\u003c\/strong\u003e gives growers a sterile, ready-to-use grain spawn option designed for fast colonization, easy inoculation, and simpler transfer into bulk substrate. If you want a jar that moves quickly and is easier to empty once colonized, this is one of the best options in the lineup.\u003c\/p\u003e\n\u003cdiv style=\"margin: 30px 0; padding: 22px; border-radius: 14px; background: linear-gradient(135deg, #f8fbff, #eef6ff); border: 1px solid #dbeafe;\"\u003e\n  \n  \u003cdiv style=\"display: flex; flex-wrap: wrap; align-items: center; gap: 20px;\"\u003e\n    \n    \u003cdiv style=\"flex: 1 1 260px;\"\u003e\n      \n      \u003ch3 style=\"margin: 0 0 8px; font-size: 22px;\"\u003e\n        New to Grain Spawn?\n      \u003c\/h3\u003e\n      \n      \u003cp style=\"margin: 0 0 14px; font-size: 15px; color: #374151;\"\u003e\n        Learn exactly how to inoculate, incubate, and fully colonize your spawn bags or grain jars with our step-by-step guide.\n      \u003c\/p\u003e\n\n      \u003ca href=\"https:\/\/www.midwestgrowkits.com\/pages\/spawn-bag-grain-jar-guide-how-to-inoculate-incubate-colonize\" style=\"display: inline-block; padding: 12px 18px; background: #1e90ff; color: white; border-radius: 8px; font-weight: 600; text-decoration: none;\"\u003e\n        Read the Full Guide →\n      \u003c\/a\u003e\n\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex: 1 1 180px;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Spawn_bag_guide_hero_1.png?v=1776512883\" alt=\"Spawn Bag and Grain Jar Guide\" style=\"width: 100%; border-radius: 10px;\"\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Midwest Grow Kit's","offers":[{"title":"Default Title","offer_id":45978232717461,"sku":"PQC3","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/3_pack_24oz_jars.jpg?v=1745528388"},{"product_id":"the-mushroom-ecosphere-3-0","title":"The Mushroom Ecosphere 3.0","description":"\u003cp\u003e\u003cstrong\u003eThe Mushroom Ecosphere™ 3.0 – Complete Vertical Fruiting \u0026amp; Incubation Chamber\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEcosphere 3.0\u003c\/strong\u003e is here! One of our flagship kits for over 7 years, the \u003cstrong\u003eMushroom Ecosphere\u003c\/strong\u003e has continued to evolve based on customer feedback—and version 3.0 is our most powerful, efficient setup yet. Whether it’s jars, spawn bags, or bulk casing trays, this is the turn-key solution to growing in mass quantities.\u003c\/p\u003e\n\u003cp\u003eBy utilizing vertical space, the Ecosphere offers over 17.7 cubic feet of interior grow room while taking up minimal floor space. With four fully customizable tiers, you can run multiple projects simultaneously—all in one automated system.\u003c\/p\u003e\n\u003cp\u003eNow setting the temperature is easier than ever. Just program your desired temperature on the digital thermostat, and the custom convection-based climate control system does the rest.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat’s New in Ecosphere 3.0\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e    New Grower's Select™ 3L Monsoon Humidifier\u003c\/strong\u003e – Produces over 360ml\/hour of ultra-fine vapor with a longer-lasting ceramic atomizer.\u003c\/li\u003e\n\u003cli\u003e  \u003cstrong\u003e  Upgraded COB LED Lighting\u003c\/strong\u003e – Over 16.4 ft of customizable lighting to trigger mushroom development and support healthy fruiting.\u003c\/li\u003e\n\u003cli\u003e    \u003cstrong\u003eCustom Molded 8mm HDPE Drip Liner \u003c\/strong\u003e– Thick, durable liner with 3” barrier walls—no cutting required.\u003c\/li\u003e\n\u003cli\u003e  \u003cstrong\u003e  New Brushless Circulation Fan \u003c\/strong\u003e– Sealed design for longevity in high-humidity environments.\u003c\/li\u003e\n\u003cli\u003e    \u003cstrong\u003eEnhanced Air Exchange\u003c\/strong\u003e – High-flow filter disks allow fresh air movement while keeping humidity stable.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eThe Mushroom Ecosphere 3.0 Includes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e    4-Tier Model O.D. 29” x 20” x 63” Grow Chamber – \u003cstrong\u003e17.7 Cubic Feet\u003c\/strong\u003e of space\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e    5-Tier Model O.D. 29\" x 20\" x 75\" Grow Chamber \u003cstrong\u003e22.5 Cubic Feet\u003c\/strong\u003e of space\u003c\/li\u003e\n\u003cli\u003e    \u003cstrong\u003eSteel Alloy Shelves\u003c\/strong\u003e – Easy tool-free frame assembly\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\u003cstrong\u003e    Custom Climate Control System\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e    200W Light-Free Infrared Heating Element\u003c\/li\u003e\n\u003cli\u003e    5” Circulation Fan (Brushless Motor)\u003c\/li\u003e\n\u003cli\u003e \u003cstrong\u003e   Digital Thermostat \u0026amp; Temperature Controller\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e  \u003cstrong\u003e  3L High-Output Ultrasonic Monsoon Humidifier\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e    24-Hour Programmable Timers – For lighting and humidity\u003c\/li\u003e\n\u003cli\u003e \u003cstrong\u003e   HTC-1 Thermometer \u0026amp; Hygrometer\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e   \u003cstrong\u003e Heavy-Duty 8mm Drip Tray\u003c\/strong\u003e (custom molded)\u003c\/li\u003e\n\u003cli\u003e    1 Qt Lava Rocks\u003c\/li\u003e\n\u003cli\u003e    16.4ft COB LED Strip Lighting – 1550 Lumen \/ 6000K\u003c\/li\u003e\n\u003cli\u003e    2 Aluminum Grow Trays (fits 2 per shelf)\u003c\/li\u003e\n\u003cli\u003e    10 Peel \u0026amp; Stick Poly Filter Disks\u003c\/li\u003e\n\u003cli\u003e    Detailed Setup Instructions with Step-by-Step Photos\u003c\/li\u003e\n\u003cli\u003e  \u003cstrong\u003e  Instant Access to Our Growing Guide Library\u003c\/strong\u003e (Jars, Spawn Bags, Bulk)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eRecommended Capacity:\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eGrowing Method\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e    \u003c\/strong\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eMax Capacity\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eJars  \u003c\/strong\u003e-  8 Cases (96 Jars)\u003cbr\u003e\u003cstrong\u003eSpawn Bags \u003c\/strong\u003e -  20 Bags (10 orders)\u003cbr\u003e\u003cstrong\u003eCasing Trays\u003c\/strong\u003e  -  5 Large Trays\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eEcosphere 3.0\u003c\/strong\u003e is completely self-automated and easy to use. Simply place the climate system on the bottom rack, plug into the digital thermostat, and set your desired temp—set it and forget it. Each heating system is hand-built and tested by a licensed electrician to ensure safe, even heating with no hot spots or humidity gaps.\u003c\/p\u003e\n\u003cp\u003eWhether you're growing jars, trays, or bags—this is your all-in-one vertical fruiting chamber solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose your Tent! 4-Tier or 5-Tier Model\u003c\/strong\u003e\u003c\/p\u003e","brand":"Midwest Grow Kit's","offers":[{"title":"4-Tier","offer_id":46483646447765,"sku":"ECO1","price":209.99,"currency_code":"USD","in_stock":true},{"title":"5-Tier","offer_id":46483646480533,"sku":"ECO55","price":229.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Ecosphere_3.0_new.jpg?v=1770066914"},{"product_id":"the-mushroom-ecosphere-3-0-foundation-edition","title":"The Mushroom Ecosphere 3.0 Foundation Edition","description":"\u003cp\u003e\u003cstrong\u003eThe Mushroom Ecosphere 3.0 – Foundation Edition\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFully Customizable. Space-Saving. Built to Grow With You.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose your size! 4-Tier or 5-Tier Model!\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eEcosphere 3.0 Foundation Edition\u003c\/strong\u003e is your all-in-one greenhouse system, engineered for serious cultivators who want maximum flexibility without compromising on space. Whether you're working with jars, spawn bags, monotubs, or trays, this vertical fruiting chamber puts over \u003cstrong\u003e17.7 or 22.5 cubic feet\u003c\/strong\u003e of growing room into a compact footprint—making it ideal for high-yield home grows and small-scale production alike.\u003c\/p\u003e\n\u003cp\u003eThis \u003cstrong\u003eFoundation Edition\u003c\/strong\u003e includes \u003cstrong\u003eall core components\u003c\/strong\u003e, giving you a customizable framework to expand as your projects evolve. From multi-tiered fruiting to efficient humidity and lighting control, this setup brings professional-level design to your grow room—no guesswork required.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eFoundation Edition Includes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e \u003cstrong\u003e   4-Tier Greenhouse (29” x 20” x 63.5”) or 5-Tier (29\" x 20\" x 75\")\u003c\/strong\u003e\u003cbr\u003e    Durable steel frame with 4 shelves and over 17.7 cubic feet of growing space.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e    Grower’s Select 3L Monsoon Humidifier\u003c\/strong\u003e\u003cbr\u003e    Reliable, high-output ultrasonic humidifier ideal for mushroom cultivation.\u003c\/li\u003e\n\u003cli\u003e   \u003cstrong\u003e 16 ft COB LED Strip Light Set\u003c\/strong\u003e\u003cbr\u003e    Full-spectrum lighting for optimal fruiting performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e    Custom HDPE Drip Liner\u003c\/strong\u003e\u003cbr\u003e    Heavy-duty 8mm liner with 3\" walls to protect floors and contain humidity.\u003c\/li\u003e\n\u003cli\u003e \u003cstrong\u003e   10 Peel \u0026amp; Stick Air Exchange Disks\u003c\/strong\u003e\u003cbr\u003e    Pre-cut polyfil filters for passive gas exchange.\u003c\/li\u003e\n\u003cli\u003e \u003cstrong\u003e   Bluetooth Thermometer\/Hygrometer\u003c\/strong\u003e\u003cbr\u003e    Monitor temp and humidity directly on the unit or through your smartphone.\u003c\/li\u003e\n\u003cli\u003e \u003cstrong\u003e   2 x 24-Hour Timers\u003c\/strong\u003e\u003cbr\u003e    One for lighting, one for manual humidifier control.\u003c\/li\u003e\n\u003cli\u003e \u003cstrong\u003e   Zip Ties\u003c\/strong\u003e\u003cbr\u003e    For securing components and customizing your setup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e    Setup Guide\u003c\/strong\u003e\u003cbr\u003e    Step-by-step instructions for quick assembly and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhy Choose the Ecosphere Foundation Edition?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e    Compact design, big yields – fits easily into most indoor environments.\u003c\/li\u003e\n\u003cli\u003e    Stackable design with room to add a 5th shelf.\u003c\/li\u003e\n\u003cli\u003e    Optimized for fresh air exchange, passive humidity retention, and consistent lighting.\u003c\/li\u003e\n\u003cli\u003e    A true turn-key fruiting chamber, ready to evolve with your growing needs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eRecommended Capacity of 4-Tier:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e   \u003cstrong\u003e Jars:\u003c\/strong\u003e Up to 8 cases (96 jars)\u003c\/li\u003e\n\u003cli\u003e    \u003cstrong\u003eSpawn Bags:\u003c\/strong\u003e Up to 20 bags (10 orders)\u003c\/li\u003e\n\u003cli\u003e \u003cstrong\u003e   Casing Trays:\u003c\/strong\u003e Up to 5 trays (with casing mix)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eOptional Add-Ons Available:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eExpand your system with these plug-and-play accessories:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e    \u003cstrong\u003eDigital Humidity Controller\u003c\/strong\u003e – Automate humidity to your exact spec.\u003c\/li\u003e\n\u003cli\u003e    \u003cstrong\u003eFresh Air Amplifier Fan System\u003c\/strong\u003e – Boost fresh air exchange in real time.\u003c\/li\u003e\n\u003cli\u003e    \u003cstrong\u003eHard Molded Drip Tray \u003c\/strong\u003e– Protect your floors with durable molded support.\u003c\/li\u003e\n\u003cli\u003e    \u003cstrong\u003e5th or 6th Tier attic Shelf Add-On \u003c\/strong\u003e– Maximize space with an attic-style top shelf.\u003c\/li\u003e\n\u003cli\u003e  \u003cstrong\u003e  Digital Temperature Controller\u003c\/strong\u003e – Dial in heating control with any external heat source.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Midwest Grow Kit's","offers":[{"title":"4-Tier","offer_id":46488177279125,"sku":"ECO7","price":134.99,"currency_code":"USD","in_stock":true},{"title":"5-Tier","offer_id":46488177311893,"sku":"ECO75","price":154.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Ecosphere_Foundation.jpg?v=1745528434"},{"product_id":"sterilized-masters-mix-bag-5-lbs","title":"Sterilized Master's Mix Bag 5 lbs","description":"\u003cstyle\u003e\n.mgk-product-content{line-height:1.6;color:#333;max-width:860px;}\n.mgk-product-content h2{color:#1a6b3a !important;font-size:1.5em;margin:1.5em 0 .5em;border-bottom:2px solid #e6e6e6;padding-bottom:.3em;}\n.mgk-product-content h3{color:#1a6b3a !important;font-size:1.15em;margin:1.2em 0 .4em;}\n.mgk-product-content p{margin:0 0 1em;}\n.mgk-product-content .b{font-weight:600;}\n.mgk-product-content ul{columns:unset !important;margin:0 0 1em;padding-left:1.4em;}\n.mgk-product-content li{margin-bottom:.5em;}\n.mgk-product-content .mgk-callout{border-left:4px solid #1a6b3a;background:#f4f9f5;padding:1em 1.2em;margin:1.3em 0;border-radius:0 4px 4px 0;}\n.mgk-product-content .mgk-callout.warn{border-left-color:#c0392b;background:#fdf3f2;}\n.mgk-product-content .mgk-callout p:last-child{margin-bottom:0;}\n.mgk-product-content ul.mgk-specs{list-style:none !important;padding-left:0 !important;}\n.mgk-product-content ul.mgk-specs li{padding-left:1.7em;position:relative;}\n.mgk-product-content ul.mgk-specs li::before{content:\"\\2713\";color:#1a6b3a;position:absolute;left:0;font-weight:700;}\n.mgk-product-content details.mgk-faq{border:1px solid #e2e2e2;border-radius:4px;margin-bottom:.6em;padding:0 1em;}\n.mgk-product-content details.mgk-faq summary{cursor:pointer;font-weight:600;padding:.85em 0;color:#1a6b3a;list-style-position:inside;}\n.mgk-product-content details.mgk-faq[open] summary{border-bottom:1px solid #eee;margin-bottom:.7em;}\n.mgk-product-content figure.mgk-figure{margin:1.6em 0;text-align:center;}\n.mgk-product-content figure.mgk-figure img{max-width:100%;height:auto;border:1px solid #e2e2e2;border-radius:4px;}\n.mgk-product-content figure.mgk-figure figcaption{font-size:.9em;color:#666;margin-top:.55em;}\n.mgk-product-content .mgk-related{display:flex;flex-wrap:wrap;gap:.55em;margin:1em 0 0;}\n.mgk-product-content .mgk-related a{background:#1a6b3a;color:#fff !important;padding:.5em 1em;border-radius:4px;text-decoration:none;font-size:.9em;display:inline-block;}\n.mgk-product-content .mgk-related a:hover{background:#155a31;}\n\u003c\/style\u003e\n\u003cdiv class=\"mgk-product-content\"\u003e\n\u003cp\u003e\u003cspan class=\"b\"\u003eReady-to-inoculate. 100% contamination-free. Trusted by commercial growers.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eOur \u003cspan class=\"b\"\u003eSterilized Master's Mix Bag\u003c\/span\u003e is the same optimized substrate we use in our own professional grow blocks — now ready for your bench. This 5 lb bag of pre-hydrated, pH-balanced \u003cspan class=\"b\"\u003ehardwood sawdust and soy hull blend\u003c\/span\u003e is pressure-sterilized at 18 PSI for 2.5 hours, so it arrives completely contaminant-free and ready to colonize. Just add your \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/pre-colonized-grain-spawn-bags\"\u003ecolonized grain spawn\u003c\/a\u003e, seal it back up, and let your mycelium run. It's the fastest, most reliable path to fruiting nearly 90% of gourmet and medicinal wood-loving mushrooms.\u003c\/p\u003e\n\u003cdiv class=\"mgk-callout\"\u003e\n\u003cp style=\"margin-bottom: .4em;\"\u003e\u003cspan class=\"b\"\u003eAt a glance\u003c\/span\u003e\u003c\/p\u003e\n\u003cul class=\"mgk-specs\" style=\"margin-bottom: 0;\"\u003e\n\u003cli\u003e5 lb optimized Master's Mix (hardwood sawdust + soy hull blend)\u003c\/li\u003e\n\u003cli\u003ePre-hydrated \u0026amp; pH-balanced for peak mycelium growth\u003c\/li\u003e\n\u003cli\u003ePressure-sterilized at 18 PSI for 2.5 hours\u003c\/li\u003e\n\u003cli\u003eSealed in a heavy-duty 0.5-micron 14A filter patch bag\u003c\/li\u003e\n\u003cli\u003eReady to use — no mixing, hydrating, or prep needed\u003c\/li\u003e\n\u003cli\u003eIdeal for lion's mane, oyster, pioppino, chestnut \u0026amp; more\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch2\u003eWhat is Master's Mix?\u003c\/h2\u003e\n\u003cp\u003eMaster's Mix is a nutrient-dense, fully sterilized substrate made from hardwood sawdust and soy hulls — the gold-standard blend for wood-loving gourmet and medicinal mushrooms. Because it's sterilized rather than pasteurized, it carries far more nutrition than coir-based bulk substrate, which translates to bigger flushes and stronger yields. The trade-off is that it must stay sealed and be handled with sterile technique. It is \u003cspan class=\"b\"\u003einoculated directly inside the sealed bag\u003c\/span\u003e with colonized grain spawn, not mixed in an open tub.\u003c\/p\u003e\n\u003cdiv class=\"mgk-callout warn\"\u003e\n\u003cp\u003e\u003cspan class=\"b\"\u003eImportant — keep it sealed.\u003c\/span\u003e Unlike coir-based \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/bulk-substrate-bags\"\u003ebulk substrate\u003c\/a\u003e (used in non-sterile conditions as a tub mix or top casing layer), Master's Mix is \u003cspan class=\"b\"\u003enot\u003c\/span\u003e meant to be exposed to open air or mixed in an unsterile tub. Doing so invites contamination and defeats the purpose of sterilization. Add your spawn directly into the sealed bag, let it fully colonize, then fruit by cutting the bag open or transferring the colonized block to a clean fruiting chamber.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eHow to use your Master's Mix bag\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eWork in front of a \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003eflow hood\u003c\/a\u003e or inside a still air box to keep things sterile.\u003c\/li\u003e\n\u003cli\u003eAdd your \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/pre-colonized-grain-spawn-bags\"\u003ecolonized grain spawn\u003c\/a\u003e directly into the bag through the filter-patch opening.\u003c\/li\u003e\n\u003cli\u003eRe-seal the bag (heat seal or fold-and-clip) and shake gently to distribute the spawn.\u003c\/li\u003e\n\u003cli\u003eIncubate at 70–75°F in the dark until the block is fully colonized.\u003c\/li\u003e\n\u003cli\u003eCut the bag open and introduce fresh air and indirect light to trigger fruiting.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cdiv class=\"mgk-callout\"\u003e\n\u003cp\u003e\u003cspan class=\"b\"\u003eHow much grain spawn do I need?\u003c\/span\u003e A single 5 LB \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/pre-colonized-grain-spawn-bags\"\u003ecolonized grain spawn bag\u003c\/a\u003e will inoculate roughly \u003cspan class=\"b\"\u003e12–13\u003c\/span\u003e of these Master's Mix bags. Because the substrate is fully sterilized, a lighter spawn rate works well — though a heavier rate will colonize faster if you want quicker turnaround.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eWhat can you grow?\u003c\/h2\u003e\n\u003cp\u003eMaster's Mix is built for wood-loving species. It performs beautifully with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan class=\"b\"\u003eLion's Mane\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eOyster\u003c\/span\u003e mushrooms (blue, gold, pink, king and more)\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003ePioppino\u003c\/span\u003e \u0026amp; \u003cspan class=\"b\"\u003eChestnut\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eShiitake\u003c\/span\u003e, \u003cspan class=\"b\"\u003eReishi\u003c\/span\u003e, \u003cspan class=\"b\"\u003eMaitake\u003c\/span\u003e and other hardwood-loving varieties\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cfigure class=\"mgk-figure\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/How_to_use_grain_spawn_2026_final.jpg?v=1780658939\" alt=\"Step-by-step guide showing how to inoculate a sterilized Master's Mix substrate bag with colonized grain spawn\" loading=\"lazy\" width=\"850\"\u003e\n\u003cfigcaption\u003eStep-by-step: how to inoculate your Master's Mix bag with colonized grain spawn.\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003eWhat is Master's Mix made of?\u003c\/summary\u003e\n\u003cp\u003eMaster's Mix is a blend of hardwood sawdust and soy hulls, pre-hydrated to the ideal moisture content and pH-balanced for vigorous colonization. Each 5 lb bag is pressure-sterilized at 18 PSI for 2.5 hours and sealed in a 0.5-micron 14A filter-patch bag.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003eHow do I inoculate a Master's Mix bag?\u003c\/summary\u003e\n\u003cp\u003eWork in front of a flow hood or inside a still air box. Add your colonized grain spawn directly into the sealed bag, re-seal it, and shake gently to distribute the spawn. Keep the bag sealed and incubate until fully colonized — never mix it in an open tub.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003eHow much grain spawn do I need per bag?\u003c\/summary\u003e\n\u003cp\u003eOne 5 LB colonized grain spawn bag inoculates approximately 12–13 of these Master's Mix bags. Since the substrate is fully sterilized, a lighter spawn rate works fine, but you can use more spawn per bag for faster colonization.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003eWhat mushrooms can I grow with it?\u003c\/summary\u003e\n\u003cp\u003eMaster's Mix is ideal for wood-loving gourmet and medicinal species including lion's mane, all oyster varieties, pioppino, chestnut, shiitake, reishi, and maitake. It supports nearly 90% of popular gourmet and medicinal mushrooms.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003eCan I use Master's Mix in a monotub or mix it in open air?\u003c\/summary\u003e\n\u003cp\u003eNo. Master's Mix is a sterilized substrate meant to stay sealed and be inoculated with sterile technique. Exposing it to open air or mixing it into a tub invites contamination. For monotub and casing-layer use, choose a coir-based bulk substrate instead.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003eHow long does colonization take?\u003c\/summary\u003e\n\u003cp\u003eMost wood-loving species fully colonize a 5 lb block in about 2–4 weeks at 70–75°F, with slower species like shiitake and reishi taking longer. Timing varies with strain, spawn rate, and temperature.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003eDo you offer wholesale pricing?\u003c\/summary\u003e\n\u003cp\u003eYes. For bulk orders of 10 bags or more, email us for wholesale pricing.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch3\u003eExplore related supplies\u003c\/h3\u003e\n\u003cdiv class=\"mgk-related\"\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/pre-colonized-grain-spawn-bags\"\u003eColonized Grain Spawn\u003c\/a\u003e \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/bulk-substrate-bags\"\u003eBulk Substrate\u003c\/a\u003e \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003eFlow Hoods \u0026amp; Clean Room\u003c\/a\u003e \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/monotubs\"\u003eMonotubs\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Myco Labs","offers":[{"title":"Default Title","offer_id":45978238255253,"sku":"MSR5","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Masters1_web.jpg?v=1745528474"},{"product_id":"3-pack-premium-quick-colonizing-5-grain-jar-32oz","title":"3-Pack Premium Quick-Colonizing 5-grain Jar (32oz)","description":"\u003cstyle\u003e\n@keyframes fadeInSoft {\n  from { opacity: 0; transform: translateY(10px); }\n  to { opacity: 1; transform: translateY(0); }\n}\n.fade-in-media {\n  animation: fadeInSoft 1.2s ease-out forwards;\n  opacity: 0;\n}\n.spec-table,\n.usage-table {\n  width: 100%;\n  border-collapse: collapse;\n  margin: 18px 0 24px 0;\n  font-size: 15px;\n}\n.spec-table th,\n.spec-table td,\n.usage-table th,\n.usage-table td {\n  border: 1px solid #e5e5e5;\n  padding: 10px 12px;\n  text-align: left;\n  vertical-align: top;\n}\n.spec-table th,\n.usage-table th {\n  background: #f7f7f7;\n}\n.info-callout {\n  background: #f8fafc;\n  border: 1px solid #e5e7eb;\n  border-radius: 8px;\n  padding: 16px 18px;\n  margin: 20px 0;\n}\n\u003c\/style\u003e\n\n\u003cp\u003e\u003cstrong\u003e3-Pack Premium Quick-Colonizing 5-Grain Spawn Jars (32oz Wide Mouth)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSterile Grain Spawn Jars for Fast Colonization, Easy Inoculation \u0026amp; Bulk Growing\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003c!-- Top Colonization Timeline Image --\u003e\n\u003cdiv class=\"fade-in-media\" style=\"text-align: center; margin: 18px 0 28px 0;\"\u003e\n  \u003cimg style=\"max-width: 100%; height: auto; border-radius: 10px; box-shadow: 0 12px 30px rgba(0,0,0,0.12);\" alt=\"5-grain spawn jar colonization timeline showing mushroom grain jar progress from inoculation to full colonization\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/5grain_jar_timeline_1K_16_9_low.jpg?v=1773499008\"\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eGet faster, more reliable growth with \u003cstrong\u003eMidwest Grow Kits Premium 5-Grain Spawn Jars\u003c\/strong\u003e. This 3-pack of \u003cstrong\u003e32oz wide mouth sterile grain jars\u003c\/strong\u003e is designed for growers who want dependable colonization, easy inoculation, and strong performance for \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/monotubs-accessories\"\u003emonotubs\u003c\/a\u003e, \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/substrate-bulk-growing\"\u003ebulk substrate\u003c\/a\u003e, and other mushroom cultivation projects.\u003c\/p\u003e\n\n\u003cp\u003eEach jar is filled with a carefully balanced \u003cstrong\u003e5-grain mushroom spawn blend\u003c\/strong\u003e made from rye berries, white milo, red milo, white millet, and red millet. This mix provides a range of grain sizes that creates more inoculation points, helping support rapid mycelium spread and more aggressive colonization compared to single-grain jars or larger bulk containers.\u003c\/p\u003e\n\n\u003cdiv class=\"info-callout\"\u003e\n  \u003cp style=\"margin: 0;\"\u003e\u003cstrong\u003eWhy growers like 5-grain jars:\u003c\/strong\u003e Grain spawn jars can be more reliable and faster colonizing for beginners because the smaller grain volume is easy to monitor, easy to shake, and often colonizes quickly with less guesswork.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eWhy Choose Our 5-Grain Spawn Jars?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast Colonization Potential\u003c\/strong\u003e – Multiple grain sizes create more inoculation points for strong, even growth.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBeginner-Friendly\u003c\/strong\u003e – Grain jars are easy to monitor and often more reliable for first-time growers.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean \u0026amp; Easy Inoculation\u003c\/strong\u003e – Self-healing injection port makes spore syringe or liquid culture use simple.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReliable Gas Exchange\u003c\/strong\u003e – Each lid includes a 0.22 micron filter disk for healthy airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSterile \u0026amp; Ready to Use\u003c\/strong\u003e – Professionally sterilized and prepared for immediate inoculation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGreat for Bulk Growing\u003c\/strong\u003e – Ideal for mixing with casing mix or bulk substrate in monotubs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003cstrong\u003eThree (3) 32oz Wide Mouth Glass Spawn Jars\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePremium 5-Grain Blend\u003c\/strong\u003e made with:\n    \u003cul\u003e\n      \u003cli\u003eRye berries\u003c\/li\u003e\n      \u003cli\u003eWhite milo\u003c\/li\u003e\n      \u003cli\u003eRed milo\u003c\/li\u003e\n      \u003cli\u003eWhite millet\u003c\/li\u003e\n      \u003cli\u003eRed millet\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGypsum \u0026amp; Calcium Phosphate\u003c\/strong\u003e for improved grain performance\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e0.22 Micron Filter Disk\u003c\/strong\u003e for gas exchange\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelf-Healing Injection Port\u003c\/strong\u003e for clean inoculation\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eSterilized at 15 PSI for 120 Minutes\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003ctable class=\"spec-table\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eComponent\u003c\/th\u003e\n      \u003cth\u003eDetails\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eJar Size\u003c\/td\u003e\n      \u003ctd\u003e32oz Wide Mouth Glass Jars\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePack Size\u003c\/td\u003e\n      \u003ctd\u003e3 Jars Per Pack\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eGrain Blend\u003c\/td\u003e\n      \u003ctd\u003eRye berries, white milo, red milo, white millet, red millet\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eAdditives\u003c\/td\u003e\n      \u003ctd\u003eGypsum and calcium phosphate\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eFilter Type\u003c\/td\u003e\n      \u003ctd\u003e0.22 micron filter disk\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eInjection Port\u003c\/td\u003e\n      \u003ctd\u003eSelf-healing port for spores or liquid culture\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSterilization\u003c\/td\u003e\n      \u003ctd\u003e15 PSI for 120 minutes\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eRecommended Inoculation\u003c\/td\u003e\n      \u003ctd\u003e3–4cc per jar\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eRecommended Usage Chart\u003c\/h2\u003e\n\u003cp\u003eUse this quick chart as a general guide when planning your bulk grow.\u003c\/p\u003e\n\u003ctable class=\"usage-table\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eApplication\u003c\/th\u003e\n      \u003cth\u003eRecommended Amount\u003c\/th\u003e\n      \u003cth\u003eNotes\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSpore Syringe per Jar\u003c\/td\u003e\n      \u003ctd\u003e3–4cc\u003c\/td\u003e\n      \u003ctd\u003eInject through the self-healing port for clean inoculation\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eLiquid Culture per Jar\u003c\/td\u003e\n      \u003ctd\u003e5–7cc\u003c\/td\u003e\n      \u003ctd\u003eIdeal for faster colonization when using clean culture\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eBulk Substrate Ratio\u003c\/td\u003e\n      \u003ctd\u003e1–2 jars per 5 lbs of casing mix\u003c\/td\u003e\n      \u003ctd\u003eRecommended for monotub and \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/substrate-bulk-growing\"\u003ebulk substrate\u003c\/a\u003e grows\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eBest Use Case\u003c\/td\u003e\n      \u003ctd\u003eMonotubs, trays, bulk grows\u003c\/td\u003e\n      \u003ctd\u003eExcellent for expanding colonized grain into larger fruiting setups\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eDesigned for Faster Colonization\u003c\/h2\u003e\n\u003cp\u003eUnlike single-grain jars, this premium blend combines both larger and smaller grains to help distribute inoculant more effectively and support faster colonization throughout the jar. The result is a vigorous \u003cstrong\u003egrain spawn jar\u003c\/strong\u003e that is easy to shake, easy to expand, and ideal for growers who want dependable performance.\u003c\/p\u003e\n\n\u003cp\u003eThese \u003cstrong\u003emushroom grain jars\u003c\/strong\u003e are especially well-suited for growers moving into \u003cstrong\u003ebulk substrate cultivation\u003c\/strong\u003e and \u003cstrong\u003emonotub growing\u003c\/strong\u003e, where strong grain spawn can make a major difference in colonization speed and overall success. If you prefer larger-scale inoculation, you can also explore our \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/spawn-bags\"\u003espawn bags collection\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eFrom Jar to Bulk Monotub Grow\u003c\/h2\u003e\n\u003cp\u003eThe video below shows the process of inoculating a grain jar, allowing it to colonize, breaking it up, and mixing it with substrate for a bulk monotub grow.\u003c\/p\u003e\n\n\u003cdiv class=\"fade-in-media\" style=\"max-width: 760px; margin: 25px auto 10px auto;\"\u003e\n  \u003cdiv style=\"position: relative; overflow: hidden; border-radius: 10px; box-shadow: 0 12px 30px rgba(0,0,0,0.12);\"\u003e\n    \u003cdiv style=\"padding: 56.25% 0 0 0; position: relative;\"\u003e\n      \u003ciframe style=\"position: absolute; top: 0; left: 0; width: 100%; height: 100%;\" title=\"5-Grain Spawn Jar to Bulk Monotub Grow Video\" src=\"https:\/\/player.vimeo.com\/video\/1173563699\"\u003e\u003c\/iframe\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003ePremium Grain Spawn Jars for Mushroom Cultivation\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eMidwest Grow Kits 3-Pack Premium 5-Grain Spawn Jars\u003c\/strong\u003e gives growers a sterile, ready-to-use grain spawn option built for fast colonization and strong expansion into bulk substrate. Whether you are inoculating with spores or liquid culture, these jars are designed to simplify the process and improve consistency from start to finish.\u003c\/p\u003e\n\n\u003cdiv style=\"margin: 30px 0; padding: 22px; border-radius: 14px; background: linear-gradient(135deg, #f8fbff, #eef6ff); border: 1px solid #dbeafe;\"\u003e\n  \u003cdiv style=\"display: flex; flex-wrap: wrap; align-items: center; gap: 20px;\"\u003e\n    \u003cdiv style=\"flex: 1 1 260px;\"\u003e\n      \u003ch3 style=\"margin: 0 0 8px; font-size: 22px;\"\u003e\n        New to Grain Spawn?\n      \u003c\/h3\u003e\n      \u003cp style=\"margin: 0 0 14px; font-size: 15px; color: #374151;\"\u003e\n        Learn exactly how to inoculate, incubate, and fully colonize your spawn bags or grain jars with our step-by-step guide.\n      \u003c\/p\u003e\n\n      \u003ca href=\"https:\/\/www.midwestgrowkits.com\/pages\/spawn-bag-grain-jar-guide-how-to-inoculate-incubate-colonize\" style=\"display: inline-block; padding: 12px 18px; background: #1e90ff; color: white; border-radius: 8px; font-weight: 600; text-decoration: none;\"\u003e\n        Read the Full Guide →\n      \u003c\/a\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex: 1 1 180px;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Spawn_bag_guide_hero_1.png?v=1776512883\" alt=\"Spawn Bag and Grain Jar Guide\" style=\"width: 100%; border-radius: 10px;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Midwest Grow Kit's","offers":[{"title":"Default Title","offer_id":45978238648469,"sku":"PQC9","price":23.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/5grain_jar_new_32oz_white_background.jpg?v=1770810052"},{"product_id":"3-pack-organic-rye-grain-jars-32oz","title":"3-Pack Original Rye Grain Jars (32oz)","description":"\u003cstyle\u003e\n@keyframes fadeInSoft {\n  from { opacity: 0; transform: translateY(10px); }\n  to { opacity: 1; transform: translateY(0); }\n}\n.fade-in-media {\n  animation: fadeInSoft 1.2s ease-out forwards;\n  opacity: 0;\n}\n.spec-table,\n.usage-table {\n  width: 100%;\n  border-collapse: collapse;\n  margin: 18px 0 24px 0;\n  font-size: 15px;\n}\n.spec-table th,\n.spec-table td,\n.usage-table th,\n.usage-table td {\n  border: 1px solid #e5e5e5;\n  padding: 10px 12px;\n  text-align: left;\n  vertical-align: top;\n}\n.spec-table th,\n.usage-table th {\n  background: #f7f7f7;\n}\n.info-callout {\n  background: #f8fafc;\n  border: 1px solid #e5e7eb;\n  border-radius: 8px;\n  padding: 16px 18px;\n  margin: 20px 0;\n}\n\u003c\/style\u003e\n\n\u003cp\u003e\u003cstrong\u003e3-Pack Original Rye Grain Spawn Jars (32oz Wide Mouth)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSterile Rye Berry Mushroom Spawn Jars for Easy Inoculation, Reliable Colonization \u0026amp; Bulk Growing\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003c!-- Top Colonization Timeline Image --\u003e\n\u003cdiv style=\"text-align:center; margin: 18px 0 28px 0;\" class=\"fade-in-media\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Rye_Berry_Jars_timeline.jpg?v=1773500296\" alt=\"rye berry spawn jar colonization timeline showing mushroom grain jar progress from inoculation to full colonization\" style=\"max-width:100%; height:auto; border-radius:10px; box-shadow: 0 12px 30px rgba(0,0,0,0.12);\"\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eStart your grow with one of the most trusted grain spawn options in mushroom cultivation. The \u003cstrong\u003eMidwest Grow Kits 3-Pack Original Rye Grain Spawn Jars\u003c\/strong\u003e includes three \u003cstrong\u003e32oz wide mouth sterilized rye berry jars\u003c\/strong\u003e prepared for clean inoculation, dependable colonization, and easy expansion into bulk substrate, monotubs, grow bags, or additional grain spawn.\u003c\/p\u003e\n\n\u003cp\u003eEach jar is filled with properly hydrated \u003cstrong\u003epremium rye grain\u003c\/strong\u003e, a classic choice for mushroom spawn thanks to its moisture retention, nutrient profile, and grain size. Rye berry spawn jars are widely used by growers who want a reliable, easy-to-work-with substrate for spores or liquid culture.\u003c\/p\u003e\n\n\u003cdiv class=\"info-callout\"\u003e\n  \u003cp style=\"margin:0;\"\u003e\u003cstrong\u003eWhy growers like rye grain jars:\u003c\/strong\u003e Rye berries offer an excellent balance of moisture, nutrition, and grain structure, making them a dependable choice for clean colonization, shake recovery, and expansion into larger bulk growing projects.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eWhy Choose Our Rye Grain Spawn Jars?\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReliable Colonization\u003c\/strong\u003e – Premium rye grain offers a proven environment for healthy mycelium growth.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean \u0026amp; Easy Inoculation\u003c\/strong\u003e – Self-healing injection ports make spores and liquid culture simple to use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDependable Gas Exchange\u003c\/strong\u003e – Each lid includes a 0.22 micron filter patch for airflow while helping resist contamination.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSterile \u0026amp; Ready to Use\u003c\/strong\u003e – Professionally prepared and sterilized for immediate inoculation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGreat for Bulk Growing\u003c\/strong\u003e – Excellent for spawning to casing mix, bulk substrate, monotubs, and grow bags.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBeginner Friendly\u003c\/strong\u003e – A simple and dependable way to begin with grain spawn jars.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\u003cstrong\u003eThree (3) 32oz Wide Mouth Glass Rye Grain Spawn Jars\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003ePremium Hydrated Rye Grain\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e0.22 Micron Filter Patch\u003c\/strong\u003e for gas exchange\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelf-Healing Injection Port\u003c\/strong\u003e for clean inoculation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProfessionally Sterilized Grain Spawn Jars\u003c\/strong\u003e ready for spores or liquid culture\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\n\u003ctable class=\"spec-table\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eComponent\u003c\/th\u003e\n      \u003cth\u003eDetails\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eJar Size\u003c\/td\u003e\n      \u003ctd\u003e32oz Wide Mouth Glass Jars\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePack Size\u003c\/td\u003e\n      \u003ctd\u003e3 Jars Per Pack\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eGrain Type\u003c\/td\u003e\n      \u003ctd\u003ePremium hydrated rye berries\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eFilter Type\u003c\/td\u003e\n      \u003ctd\u003e0.22 micron filter patch\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eInjection Port\u003c\/td\u003e\n      \u003ctd\u003eSelf-healing port for spores or liquid culture\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePreparation\u003c\/td\u003e\n      \u003ctd\u003eProfessionally hydrated and sterilized\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eRecommended Inoculation\u003c\/td\u003e\n      \u003ctd\u003e3–4cc per jar\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eUse Case\u003c\/td\u003e\n      \u003ctd\u003eSpawn production, monotubs, grow bags, grain expansion, bulk substrate cultivation\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eRecommended Usage Chart\u003c\/h2\u003e\n\n\u003cp\u003eUse this quick chart as a general guide when planning your bulk grow.\u003c\/p\u003e\n\n\u003ctable class=\"usage-table\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eApplication\u003c\/th\u003e\n      \u003cth\u003eRecommended Amount\u003c\/th\u003e\n      \u003cth\u003eNotes\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSpore Syringe per Jar\u003c\/td\u003e\n      \u003ctd\u003e3–4cc\u003c\/td\u003e\n      \u003ctd\u003eInject through the self-healing port for clean inoculation\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eLiquid Culture per Jar\u003c\/td\u003e\n      \u003ctd\u003e3–4cc\u003c\/td\u003e\n      \u003ctd\u003eWorks well for faster colonization when using clean culture\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eBulk Substrate Ratio\u003c\/td\u003e\n      \u003ctd\u003e2 jars per 5 lbs of casing mix\u003c\/td\u003e\n      \u003ctd\u003eRecommended for monotub and bulk substrate grows\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eBest Use Case\u003c\/td\u003e\n      \u003ctd\u003eMonotubs, grow bags, trays, bulk grows\u003c\/td\u003e\n      \u003ctd\u003eExcellent for expanding colonized grain into larger fruiting setups\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eWhy Rye Grain Still Matters\u003c\/h2\u003e\n\n\u003cp\u003eRye berries remain one of the most popular grain spawn choices for a reason. Their size, texture, and moisture-holding ability make them easy to inoculate, easy to shake, and dependable for strong mycelium colonization. For growers who prefer a classic grain spawn format, rye jars continue to be a proven option.\u003c\/p\u003e\n\n\u003cp\u003eThese jars are especially useful for growers moving into \u003cstrong\u003ebulk substrate cultivation\u003c\/strong\u003e, \u003cstrong\u003emonotub growing\u003c\/strong\u003e, and \u003cstrong\u003espawn expansion\u003c\/strong\u003e, where clean and vigorous grain spawn can make the rest of the process easier and more consistent.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eFrom Jar to Bulk Monotub Grow\u003c\/h2\u003e\n\n\u003cp\u003eThe video below shows the process of inoculating a grain jar, allowing it to colonize, breaking it up, and mixing it with substrate for a bulk monotub grow.\u003c\/p\u003e\n\n\u003cdiv style=\"max-width: 760px; margin: 25px auto 10px auto;\" class=\"fade-in-media\"\u003e\n  \u003cdiv style=\"position: relative; overflow: hidden; border-radius: 10px; box-shadow: 0 12px 30px rgba(0,0,0,0.12);\"\u003e\n    \u003cdiv style=\"padding: 56.25% 0 0 0; position: relative;\"\u003e\n      \u003ciframe src=\"https:\/\/player.vimeo.com\/video\/1173563699\" title=\"Rye Grain Spawn Jar to Bulk Monotub Grow Video\" style=\"position:absolute; top:0; left:0; width:100%; height:100%;\" frameborder=\"0\" allow=\"autoplay; fullscreen; picture-in-picture\" allowfullscreen\u003e\n      \u003c\/iframe\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003ePremium Rye Grain Spawn Jars for Mushroom Cultivation\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eMidwest Grow Kits 3-Pack Original Rye Grain Spawn Jars\u003c\/strong\u003e gives growers a sterile, ready-to-use rye berry spawn option designed for dependable colonization and easy expansion into bulk substrate. Whether you are inoculating with spores or liquid culture, these jars provide a clean and reliable starting point for mushroom cultivation projects of all sizes.\u003c\/p\u003e\n\u003cdiv style=\"margin: 30px 0; padding: 22px; border-radius: 14px; background: linear-gradient(135deg, #f8fbff, #eef6ff); border: 1px solid #dbeafe;\"\u003e\n  \n  \u003cdiv style=\"display: flex; flex-wrap: wrap; align-items: center; gap: 20px;\"\u003e\n    \n    \u003cdiv style=\"flex: 1 1 260px;\"\u003e\n      \n      \u003ch3 style=\"margin: 0 0 8px; font-size: 22px;\"\u003e\n        New to Grain Spawn?\n      \u003c\/h3\u003e\n      \n      \u003cp style=\"margin: 0 0 14px; font-size: 15px; color: #374151;\"\u003e\n        Learn exactly how to inoculate, incubate, and fully colonize your spawn bags or grain jars with our step-by-step guide.\n      \u003c\/p\u003e\n\n      \u003ca href=\"https:\/\/www.midwestgrowkits.com\/pages\/spawn-bag-grain-jar-guide-how-to-inoculate-incubate-colonize\" style=\"display: inline-block; padding: 12px 18px; background: #1e90ff; color: white; border-radius: 8px; font-weight: 600; text-decoration: none;\"\u003e\n        Read the Full Guide →\n      \u003c\/a\u003e\n\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex: 1 1 180px;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Spawn_bag_guide_hero_1.png?v=1776512883\" alt=\"Spawn Bag and Grain Jar Guide\" style=\"width: 100%; border-radius: 10px;\"\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Midwest Grow Kit's","offers":[{"title":"Default Title","offer_id":45978240057493,"sku":"RG32","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Rye_Jar_32_oz_3pack.jpg?v=1745528521"},{"product_id":"masters-mix-pellets-35lb-bag-50-oak-50-soy-hull","title":"Masters Mix Pellets 40LB Bag (50% Oak 50% Soy Hull)","description":"\u003cp\u003e\u003cstrong\u003eMaster's Mix Pellets – 40LB Bag (50% Oak \/ 50% Soy Hull)  \u003cb\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e(Sorry, no additional Discounts can be applied)\u003c\/span\u003e\u003c\/b\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eThe industry’s most trusted substrate—pre-blended for simplicity, performance, and maximum yield with every grow.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e    50\/50 blend of oak hardwood and soy hulls\u003c\/li\u003e\n\u003cli\u003e    Single-pellet formulation for fast and easy use\u003c\/li\u003e\n\u003cli\u003e    No measuring, mixing, or fuss—just hydrate and sterilize\u003c\/li\u003e\n\u003cli\u003e    Available in 40LB bags or by the pallet (40 bags \/ 2000 lbs)\u003c\/li\u003e\n\u003cli\u003e    Freight included in pallet pricing (Continental US only)\u003c\/li\u003e\n\u003cli\u003e    100% satisfaction guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMyco Labs' Masters Mix is the gold standard for cultivating hardwood-loving mushrooms like lion’s mane, shiitake, and reishi. Created in partnership with the original developer of the formula, these premium pellets are manufactured by the largest substrate supplier in the country—ensuring purity, consistency, and high-performance results.\u003c\/p\u003e\n\u003cp\u003eWhether you're just getting started or managing a large-scale operation, this ready-to-use substrate cuts down on prep time and boosts efficiency. Simply hydrate, sterilize, and inoculate—no additional supplements required.\u003c\/p\u003e\n\u003cp\u003eWith no mixing or measuring needed, you get more time to focus on your cultures while enjoying rich, repeatable yields. Available by the bag or in bulk for commercial growers.\u003c\/p\u003e","brand":"Myco Labs","offers":[{"title":"40 Pounds","offer_id":46116279025813,"sku":"MM35","price":34.99,"currency_code":"USD","in_stock":true},{"title":"2000 lb Pallet","offer_id":46116279058581,"sku":"MM36","price":1199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/MastersMix_collage_main.jpg?v=1745528737"},{"product_id":"blue-oyster-liquid-culture-syringe-10cc","title":"Blue Oyster Liquid Culture Syringe (10cc)","description":"\u003cp\u003e\u003cstrong\u003eBlue Oyster Liquid Culture Syringe (10cc)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eG1 Genetics | Fast Colonizer | Paper \u0026amp; Wood Recycling Strain\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBlue Oyster mushrooms (Pleurotus ostreatus)\u003c\/strong\u003e are prized for their lightning-fast colonization and ability to thrive on a variety of unconventional substrates—including newspaper and cardboard. This vigorous strain produces large, meaty fruit bodies with a signature blue-gray hue, making it a top choice for both culinary use and waste-reducing grow projects.\u003c\/p\u003e\n\u003cp\u003eOur G1 genetics ensure clean, aggressive mycelial growth that's beginner-friendly and well-suited for spawn bags, straw logs, wood chips, or even household waste materials like corrugated boxes. Their adaptability, ease of cultivation, and rich umami flavor have made Blue Oysters one of the most popular gourmet mushroom strains worldwide.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e    10cc Liquid Culture Syringe\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e    Alcohol Prep Pad\u003c\/li\u003e\n\u003cli\u003e    16G 1.5\" Luer Lock Needle\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGrowth Information:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSubstrates: \u003c\/strong\u003eStraw, Sawdust, Wood Chips, Cardboard, Newspaper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncubation Temp:\u003c\/strong\u003e 70–75°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncubation Humidity:\u003c\/strong\u003e 80–85%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncubation Time:\u003c\/strong\u003e 10–14 Days\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFruiting Temp: \u003c\/strong\u003e60–70°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFruiting Humidity: \u003c\/strong\u003e90–93%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFruiting Time: \u003c\/strong\u003e12–16 Days\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAll orders consisting only of liquid culture syringes receive a free upgrade to FedEx 2-Day or USPS Priority Mail.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Myco Labs","offers":[{"title":"Default Title","offer_id":45978248151189,"sku":"BLUE10","price":12.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Blue_Oyster_liquid_culture_syringe_main.jpg?v=1745528749"},{"product_id":"lions-mane-liquid-culture-syringe-10cc","title":"Lion's Mane Liquid Culture Syringe (10cc)","description":"\u003cp\u003e\u003cstrong\u003eLion's Mane Liquid Culture 10CC Syringe – Isolated G1 Genetics\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHericium erinaceus | Gourmet \u0026amp; Medicinal Mushroom Culture\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur \u003cstrong\u003eLion's Mane Liquid Culture Syringe\u003c\/strong\u003e contains 10cc of aggressively growing, first-generation (G1) isolated genetics—ready to produce large, robust fruiting bodies. Known scientifically as Hericium erinaceus, Lion's Mane is a culinary and medicinal favorite, native to North America, Europe, and Asia. Easily recognized by its cascading spines, this tooth fungus typically grows on hardwood and forms dense clumps.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eKit Includes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e    10cc Lion’s Mane Liquid Culture Syringe\u003c\/li\u003e\n\u003cli\u003e    16G 1.5\" Luer Lock Needle\u003c\/li\u003e\n\u003cli\u003e    Alcohol Prep Pad\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eMycology Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e    Isolated First-Generation Genetics (G1)\u003c\/li\u003e\n\u003cli\u003e    Highly aggressive mycelial growth\u003c\/li\u003e\n\u003cli\u003e    Produces large, full-bodied mushrooms\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eEnvironmental Parameters\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncubation:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e   \u003cstrong\u003e Temp: \u003c\/strong\u003e70–75°F\u003c\/li\u003e\n\u003cli\u003e    \u003cstrong\u003eHumidity:\u003c\/strong\u003e 82–85%\u003c\/li\u003e\n\u003cli\u003e    \u003cstrong\u003eDuration: \u003c\/strong\u003e~10 Days\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFruiting:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e    \u003cstrong\u003eTemp:\u003c\/strong\u003e 50–75°F\u003c\/li\u003e\n\u003cli\u003e    \u003cstrong\u003eHumidity: \u003c\/strong\u003e90–93%\u003c\/li\u003e\n\u003cli\u003e    \u003cstrong\u003eDuration:\u003c\/strong\u003e ~14 Days\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eMedicinal \u0026amp; Functional Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e  \u003cstrong\u003e  Cognitive Support: \u003c\/strong\u003eMay aid memory, clarity, and nerve regeneration\u003c\/li\u003e\n\u003cli\u003e  \u003cstrong\u003e  Cardiovascular Health:\u003c\/strong\u003e Supports healthy cholesterol and circulation\u003c\/li\u003e\n\u003cli\u003e    \u003cstrong\u003eSkin \u0026amp; Collagen Support:\u003c\/strong\u003e Rich in antioxidants, may reduce signs of aging\u003c\/li\u003e\n\u003cli\u003e    \u003cstrong\u003eSleep \u0026amp; Recovery: \u003c\/strong\u003eMay improve sleep quality and reduce fatigue\u003c\/li\u003e\n\u003cli\u003e    \u003cstrong\u003eAthletic Performance: \u003c\/strong\u003eStudied for endurance and physical resilience\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Myco Labs","offers":[{"title":"Default Title","offer_id":45978248282261,"sku":"LIO10","price":12.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Lions_Mane_LC_Syringe_main.jpg?v=1745528754"},{"product_id":"pink-oyster-liquid-culture-syringe-10cc","title":"Pink Oyster Liquid Culture Syringe (10cc)","description":"\u003cp\u003e\u003cstrong\u003ePink Oyster Liquid Culture Syringe (10cc)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eG1 Genetics | Fast-Growing | Subtropical Variety\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePink Oyster mushrooms (Pleurotus djamor)\u003c\/strong\u003e are among the easiest gourmet mushrooms to grow, making them a favorite for both beginners and seasoned hobbyists. Known for their vibrant pink hue and tropical origins, these mushrooms grow quickly and form dense, fan-like clusters with a mild seafood-like aroma when cooked.\u003c\/p\u003e\n\u003cp\u003eOur strain thrives in warm environments and fruits best between 74–82°F. Whether you're working with straw, sawdust, or alternative substrates, Pink Oysters colonize rapidly and produce generous flushes. 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It colonizes rye berries exceptionally well and performs reliably even in less-than-perfect conditions. This medium-sized variety is known for its versatility—it can be cultivated on supplemented sawdust, and while straw is also viable, wood-based substrates yield far better results. With its wide fruiting temperature range (62–85°F), this strain offers consistent results in diverse environments.\u003c\/p\u003e\n\u003cp\u003eShiitake mushrooms grow naturally on the decaying wood of deciduous trees like oak, maple, beech, and chestnut. In East Asian cuisines, fresh or dried shiitake are staples—enhancing soups, broths, stir-fries, and steamed dishes. 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This variety prefers cooler conditions (60–68°F) and is known for its reliability and ability to fruit multiple times. Once the baby primordia appear, these mushrooms typically mature in just 2–3 weeks.\u003c\/p\u003e\n\u003cp\u003eChestnut mushrooms thrive on rye berries and respond well to a wide variety of substrates. This strain is easy to work with, providing consistent performance across several flushes. 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Native to North America and Europe, they’ve earned their reputation through decades of use in kitchens across cultures. Whether fried, sautéed, or stuffed, Portobellos are a staple in both casual and fine dining.\u003c\/p\u003e\n\u003cp\u003eIn their early stage, Portobellos appear as small white or light brown mushrooms. As they mature, they develop into the large, dark brown caps commonly seen in grocery stores and restaurants. 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Originally developed in Western Europe, this hybrid strain produces large, meaty fruit bodies with a savory, umami-rich profile. Colonizing rapidly on a wide variety of substrates, it’s a reliable and high-yielding choice for beginners and advanced growers alike.\u003c\/p\u003e\n\u003cp\u003eThis strain thrives on everything from straw and sawdust to cardboard and wood chips, making it an excellent option for home cultivators or sustainable food projects. 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Known for their honeycomb appearance and rich, bold flavor, these mushrooms are both a delicacy and a challenge to find in the wild. Our strain was selected for its vigor and consistency, making it one of the easiest morel strains to colonize on grain.\u003c\/p\u003e\n\u003cp\u003eThese mushrooms are renowned for their exquisite flavor and long shelf life when dehydrated—retaining their bold taste for years. Morels fruit naturally in spring but may also appear in the fall for several seasons after planting.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eWhy Grow Black Morel Mushrooms?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMorels are notoriously difficult to cultivate indoors, though Black Morels are the most promising option for controlled environments. That said, outdoor habitat beds yield the most consistent results. 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With a rich, mild, sweet, and nutty taste paired with a firm texture, they’re a culinary favorite in stir-fries, soups, and sauces.\u003c\/p\u003e\n\u003cp\u003eThese mushrooms should be cooked before consumption, as they carry a bitter taste when raw that completely disappears when heated. Once prepared, their slightly crunchy texture and savory flavor shine—making them perfect alongside wild game, seafood, or as a standalone delicacy.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eWhy Grow Brown Beech Mushrooms?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBrown Beech mushrooms (Hypsizygus tessellatus) are both gourmet and versatile. They’re commonly sautéed whole—stem and all—or roasted slowly in oil or butter to unlock their signature nuttiness. 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Its unique layered growth makes it one of the easiest mushrooms to identify in nature—and one of the most rewarding to grow at home.\u003c\/p\u003e\n\u003cp\u003eBeyond its bold taste and texture, Chicken of the Woods is highly valued for its protein content and culinary versatility. When harvested young and tender, it’s ideal for pan-frying, grilling, or sautéing as a vegetarian meat substitute.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eEnvironment Information\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e \u003cstrong\u003e   Incubation Temp:\u003c\/strong\u003e 68–80°F\u003c\/li\u003e\n\u003cli\u003e   \u003cstrong\u003e Incubation Humidity: \u003c\/strong\u003e85%–90%\u003c\/li\u003e\n\u003cli\u003e  \u003cstrong\u003e  Incubation Time: \u003c\/strong\u003e18 Days\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e    Fruiting Temp: \u003c\/strong\u003e67–76°F\u003c\/li\u003e\n\u003cli\u003e    \u003cstrong\u003eFruiting Humidity: \u003c\/strong\u003e90%–93%\u003c\/li\u003e\n\u003cli\u003e    \u003cstrong\u003eFruiting Time: \u003c\/strong\u003e20–30 Days\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eRecommended Substrates\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e    Rye Berries\u003c\/li\u003e\n\u003cli\u003e    Supplemented Sawdust\u003c\/li\u003e\n\u003cli\u003e    Straw\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e    10cc Liquid Culture Syringe\u003c\/li\u003e\n\u003cli\u003e    Alcohol Prep Pad\u003c\/li\u003e\n\u003cli\u003e    16G 1.5\" Luer Lock Needle\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e**  FREE FedEx 2-Day or USPS Priority Mail on LC-only orders  **\u003c\/strong\u003e\u003c\/p\u003e","brand":"Myco Labs","offers":[{"title":"Default Title","offer_id":45978254868629,"sku":"CWL10","price":12.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Chicken-of-the-woods.jpg?v=1745528831"},{"product_id":"white-enoki-enokitake-liquid-culture-syringe-10cc","title":"White Enoki (Enokitake) Liquid Culture Syringe (10cc)","description":"\u003cp\u003e\u003cstrong\u003eWhite Enoki (Enokitake) Liquid Culture Syringe (10cc)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFlammulina velutipes – Gourmet White Cultivar\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis refined \u003cstrong\u003eWhite Enoki strain \u003c\/strong\u003ehas been carefully selected for its pale coloration, slender stems, and tight clustering growth pattern. Unlike its wild counterpart with orange caps and velvet stems, this cultivar produces long, noodle-like mushrooms with smooth white caps—perfect for cool-climate fruiting and popular in Asian cuisine for both texture and nutritional value.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eWhy Grow White Enoki?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEnokitake is prized for its mild, slightly crunchy texture and delicate flavor. Rich in antioxidants and compounds believed to support immune health, it’s a frequent addition to soups, stir-fries, and noodle dishes. 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This aggressive outdoor strain is among the most promising we've encountered, with rapid colonization and strong genetics. Known for its honeycomb structure and deep, nutty flavor, Morchella elata is one of the most coveted gourmet mushrooms worldwide.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eWhy Grow Golden Yellow Morels?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eGolden Morels offer a bold, savory flavor that holds up beautifully when dried or rehydrated—making them a long-term pantry staple. 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Often called the \"steak\" of mushrooms, their thick, meaty stems and savory flavor make them a gourmet staple. 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This rare wild-harvested variety has been carefully cloned and isolated to bring out a beautiful pink hue in its fruiting bodies. The coloration is believed to result from elevated beta carotene levels—adding a unique visual and nutritional element to this already celebrated medicinal mushroom. Available for a limited time only.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eKit Includes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e    10cc Pink Lion's Mane Liquid Culture Syringe\u003c\/li\u003e\n\u003cli\u003e    16G 1.5\" Luer Lock Needle\u003c\/li\u003e\n\u003cli\u003e    Alcohol Prep Pad\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eMycology Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e  \u003cstrong\u003e  Species: \u003c\/strong\u003eHericium erinaceus – Isolated Pink Variety\u003c\/li\u003e\n\u003cli\u003e   \u003cstrong\u003e Genetics: \u003c\/strong\u003eFirst Generation (G1)\u003c\/li\u003e\n\u003cli\u003e    \u003cstrong\u003eAppearance: \u003c\/strong\u003eProduces vibrant pink-hued fruiting bodies\u003c\/li\u003e\n\u003cli\u003e    \u003cstrong\u003eOrigin:\u003c\/strong\u003e Wild clone\u003c\/li\u003e\n\u003cli\u003e    \u003cstrong\u003eFlavor \u0026amp; Use: \u003c\/strong\u003eEdible \u0026amp; medicinal—often used in wellness supplements, teas, and gourmet cooking\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eHealth Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e    May help prevent and slow the growth of certain cancers (beta-glucans \u0026amp; polysaccharides)\u003c\/li\u003e\n\u003cli\u003e    Supports cardiovascular health and healthy blood flow\u003c\/li\u003e\n\u003cli\u003e    Promotes radiant skin and may aid collagen production\u003c\/li\u003e\n\u003cli\u003e    May enhance sleep quality and help with sleep-related disorders\u003c\/li\u003e\n\u003cli\u003e    Potential to improve athletic endurance and reduce fatigue\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCultivation Info\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e    \u003cstrong\u003eIncubation Temp: \u003c\/strong\u003e70–75°F |\u003cstrong\u003e Humidity:\u003c\/strong\u003e 82–85% | \u003cstrong\u003eTime: \u003c\/strong\u003e10 days\u003c\/p\u003e\n\u003cp\u003e    \u003cstrong\u003eFruiting Temp: \u003c\/strong\u003e50–75°F | \u003cstrong\u003eHumidity: \u003c\/strong\u003e90–93% | \u003cstrong\u003eTime:\u003c\/strong\u003e 14 days\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e** Orders containing only liquid culture syringes are automatically upgraded to FedEx 2-Day or USPS Priority Mail! **\u003c\/strong\u003e\u003c\/p\u003e","brand":"Myco Labs","offers":[{"title":"Default Title","offer_id":45978255884437,"sku":"LIP10","price":12.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Pink_lion_liquid_culture_syringe.jpg?v=1745528842"},{"product_id":"white-beech-shimeji-liquid-culture-syringe-10cc","title":"White Beech Shimeji Liquid Culture Syringe (10cc)","description":"\u003cp\u003e\u003cstrong\u003eWhite Beech Shimeji Liquid Culture Syringe (10cc) – G1 Isolated Genetics\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHypsizygus tessellatus | Mild, Nutty, and Perfectly Textured\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhite Beech\u003c\/strong\u003e, also known as Hon Shimeji or Beech White Clamshell, is one of the most flavorful gourmet mushrooms. With a naturally mild, sweet, and nutty taste, it offers a firm, slightly crunchy texture that’s perfect for culinary applications—especially in stir-fries, soups, and sauces. Raw Shimeji is bitter but transforms beautifully when cooked, making it a prized ingredient in Asian cuisine and fine dining.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eKit Includes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e    10cc White Beech Liquid Culture Syringe\u003c\/li\u003e\n\u003cli\u003e    16G 1.5\" Luer Lock Needle\u003c\/li\u003e\n\u003cli\u003e    Alcohol Prep Pad\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eMycology Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e    \u003cstrong\u003eSpecies:\u003c\/strong\u003e Hypsizygus tessellatus\u003c\/li\u003e\n\u003cli\u003e    \u003cstrong\u003eGenetics:\u003c\/strong\u003e Isolated First Generation (G1)\u003c\/li\u003e\n\u003cli\u003e    \u003cstrong\u003eFlavor Profile: \u003c\/strong\u003eMild, sweet, nutty\u003c\/li\u003e\n\u003cli\u003e    \u003cstrong\u003eTexture:\u003c\/strong\u003e Firm and slightly crunchy\u003c\/li\u003e\n\u003cli\u003e    \u003cstrong\u003eCommon Uses:\u003c\/strong\u003e Stir-fries, soups, sauces, seafood \u0026amp; game pairings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCultivation Info\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e \u003cstrong\u003e   Substrates:\u003c\/strong\u003e Rye berries, supplemented sawdust, straw\u003c\/li\u003e\n\u003cli\u003e    \u003cstrong\u003eIncubation Temp:\u003c\/strong\u003e 68–80°F | \u003cstrong\u003eHumidity:\u003c\/strong\u003e 85–90% | \u003cstrong\u003eTime: \u003c\/strong\u003e18 days\u003c\/li\u003e\n\u003cli\u003e    \u003cstrong\u003eFruiting Temp:\u003c\/strong\u003e 45–65°F | \u003cstrong\u003eHumidity:\u003c\/strong\u003e 90–93% |\u003cstrong\u003e Time: \u003c\/strong\u003e20 days\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e** Orders containing only liquid culture syringes are automatically upgraded to FedEx 2-Day or USPS Priority Mail! **\u003c\/strong\u003e\u003c\/p\u003e","brand":"Myco Labs","offers":[{"title":"Default Title","offer_id":45978255949973,"sku":"WBLC","price":12.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/whitebeech123_web.jpg?v=1745528845"},{"product_id":"colonized-grain-spawn-bag-for-commercial-production-3-lbs-choose-your-variety","title":"Colonized Grain Spawn Bag For Commercial Production 3 LBS (Choose Your Variety)","description":"\u003cp\u003eOur 3LB Colonized Grain Spawn, meticulously designed for both professional mushroom growing farms and dedicated mycologists. We understand the critical importance of superior genetics in cultivation, which is why our grain spawn is derived from first-generation genetics of various gourmet mushroom strains, ensuring robust growth and bountiful yields.\u003cbr\u003e\u003cbr\u003eOur commitment to quality is unparalleled. Each 3lb bag of our colonized grain spawn is a testament to our dedication, crafted under the most stringent conditions in our own state-of-the-art facility. This guarantees a product that not only meets but exceeds the expectations of professional cultivators who rely on consistent and reliable service for the smooth operation of their farms.\u003c\/p\u003e\n\u003cp data-rx-type=\"text\" data-rx-first-level=\"true\"\u003ePlease note, we do not provide instructions for making mushroom blocks as each grower's setup and mix preferences vary.\u003c\/p\u003e\n\u003cp data-rx-type=\"text\" data-rx-first-level=\"true\"\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003ci\u003e\u003cb\u003ePLEASE NOTE!\u003cbr\u003eWe are moving to 5LB Colonized Bags and have limited stock of 3LB remaining. Please see our new 5LB listings \u003ca style=\"color: rgb(255, 42, 0);\" href=\"https:\/\/www.midwestgrowkits.com\/collections\/pre-colonized-grain-spawn-bags?\"\u003ehere\u003c\/a\u003e\u003c\/b\u003e\u003c\/i\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-rx-type=\"text\" data-rx-first-level=\"true\"\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLion's Mane\u003c\/strong\u003e: Celebrated for its cognitive benefits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePink Oyster\u003c\/strong\u003e: Prized for its meaty texture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlue Oyster\u003c\/strong\u003e: Distinguished by its unique flavor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRed Reishi: \u003c\/b\u003eA prized medicinal mushroom\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eAntler Reishi:\u003c\/b\u003e A medicinal mushroom\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaitake (Hen of the Woods)\u003c\/strong\u003e: Earthy, rich flavor profile.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShiitake\u003c\/strong\u003e: Popular for its unique taste.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePearl White Oyster\u003c\/strong\u003e- Popular Classic Oyster Mushroom\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKing Blue Oyster\u003c\/strong\u003e- Fast, delicious \u0026amp; Top Producing Hybrid\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChestnut-\u003c\/strong\u003e Delicious \u0026amp; Nutty Flavor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKing Trumpet Oyster\u003c\/strong\u003e- Large steak like mushrooms\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-rx-type=\"text\" data-rx-first-level=\"true\"\u003e \u003c\/p\u003e\n\u003cp data-rx-type=\"text\" data-rx-first-level=\"true\"\u003e \u003c\/p\u003e","brand":"Myco Labs","offers":[{"title":"Lion's Mane","offer_id":46255756476565,"sku":"GS3","price":20.0,"currency_code":"USD","in_stock":false},{"title":"Shiitake","offer_id":46255756509333,"sku":"GS4","price":20.0,"currency_code":"USD","in_stock":false},{"title":"Pearl White Oyster","offer_id":46255756542101,"sku":"GS5","price":20.0,"currency_code":"USD","in_stock":false},{"title":"Golden Yellow Oyster","offer_id":46255756574869,"sku":"GS6","price":20.0,"currency_code":"USD","in_stock":false},{"title":"Red Reishi","offer_id":46255756607637,"sku":"GS7","price":20.0,"currency_code":"USD","in_stock":false},{"title":"Blue Oyster","offer_id":46255756640405,"sku":"GS8","price":20.0,"currency_code":"USD","in_stock":false},{"title":"Pink Oyster","offer_id":46255756673173,"sku":"GS9","price":20.0,"currency_code":"USD","in_stock":false},{"title":"King Blue Oyster","offer_id":46419256049813,"sku":"CGPKB","price":22.0,"currency_code":"USD","in_stock":false},{"title":"Chestnut","offer_id":46419279282325,"sku":null,"price":25.0,"currency_code":"USD","in_stock":false},{"title":"King Trumpet Oyster","offer_id":46497846362261,"sku":null,"price":20.0,"currency_code":"USD","in_stock":false},{"title":"Antler Reishi","offer_id":46521070190741,"sku":null,"price":20.0,"currency_code":"USD","in_stock":false},{"title":"Turkey Tail","offer_id":46521070223509,"sku":null,"price":20.0,"currency_code":"USD","in_stock":false},{"title":"Maitake","offer_id":47434085040277,"sku":null,"price":20.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Lions_Mane_colonized_bag_final.jpg?v=1760441883"},{"product_id":"premium-quick-colonizing-5-grain-jar-32oz-1","title":"Premium Quick-Colonizing 5-grain Jar (32oz)","description":"\u003cstyle\u003e\n@keyframes fadeInSoft {\n  from { opacity: 0; transform: translateY(10px); }\n  to { opacity: 1; transform: translateY(0); }\n}\n.fade-in-media {\n  animation: fadeInSoft 1.2s ease-out forwards;\n  opacity: 0;\n}\n.spec-table,\n.usage-table {\n  width: 100%;\n  border-collapse: collapse;\n  margin: 18px 0 24px 0;\n  font-size: 15px;\n}\n.spec-table th,\n.spec-table td,\n.usage-table th,\n.usage-table td {\n  border: 1px solid #e5e5e5;\n  padding: 10px 12px;\n  text-align: left;\n  vertical-align: top;\n}\n.spec-table th,\n.usage-table th {\n  background: #f7f7f7;\n}\n.info-callout {\n  background: #f8fafc;\n  border: 1px solid #e5e7eb;\n  border-radius: 8px;\n  padding: 16px 18px;\n  margin: 20px 0;\n}\n\u003c\/style\u003e\n\n\u003cp\u003e\u003cstrong\u003ePremium Quick-Colonizing 5-Grain Spawn Jar (32oz Wide Mouth)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSterile Grain Spawn Jar for Fast Colonization, Easy Inoculation \u0026amp; Bulk Growing\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cdiv style=\"text-align: center; margin: 18px 0 28px 0;\" class=\"fade-in-media\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/5grain_jar_timeline_1K_16_9_low.jpg?v=1773499008\" alt=\"5-grain spawn jar colonization timeline showing mushroom grain jar progress from inoculation to full colonization\" style=\"max-width: 100%; height: auto; border-radius: 10px; box-shadow: 0 12px 30px rgba(0,0,0,0.12);\"\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eGet faster, more reliable growth with the \u003cstrong\u003eMidwest Grow Kits Premium 5-Grain Spawn Jar\u003c\/strong\u003e. This \u003cstrong\u003e32oz wide mouth sterile grain jar\u003c\/strong\u003e is designed for growers who want easy inoculation, dependable colonization, and strong performance for \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/monotubs-accessories\"\u003emonotubs\u003c\/a\u003e, \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/substrate-bulk-growing\"\u003ebulk substrate\u003c\/a\u003e, and other mushroom cultivation projects.\u003c\/p\u003e\n\n\u003cp\u003eEach jar is filled with a carefully balanced \u003cstrong\u003e5-grain mushroom spawn blend\u003c\/strong\u003e made from rye berries, white milo, red milo, white millet, and red millet. This mix provides a range of grain sizes that creates more inoculation points, helping support rapid mycelium spread and more aggressive colonization compared to single-grain jars or larger bulk containers.\u003c\/p\u003e\n\n\u003cdiv class=\"info-callout\"\u003e\n  \u003cp style=\"margin: 0;\"\u003e\u003cstrong\u003eWhy growers like 5-grain jars:\u003c\/strong\u003e Grain spawn jars can be more reliable and faster colonizing for beginners because the smaller grain volume is easy to monitor, easy to shake, and often colonizes quickly with less guesswork.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eWhy Choose Our 5-Grain Spawn Jar?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast Colonization Potential\u003c\/strong\u003e – Multiple grain sizes create more inoculation points for strong, even growth.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBeginner-Friendly\u003c\/strong\u003e – Grain jars are easy to monitor and often more reliable for first-time growers.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean \u0026amp; Easy Inoculation\u003c\/strong\u003e – Self-healing injection port makes spore syringe or liquid culture use simple.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReliable Gas Exchange\u003c\/strong\u003e – Each lid includes a 0.22 micron filter disk for healthy airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSterile \u0026amp; Ready to Use\u003c\/strong\u003e – Professionally sterilized and prepared for immediate inoculation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGreat for Bulk Growing\u003c\/strong\u003e – Ideal for mixing with casing mix or bulk substrate in monotubs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003cstrong\u003eOne (1) 32oz Wide Mouth Glass Spawn Jar\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePremium 5-Grain Blend\u003c\/strong\u003e made with:\n    \u003cul\u003e\n      \u003cli\u003eRye berries\u003c\/li\u003e\n      \u003cli\u003eWhite milo\u003c\/li\u003e\n      \u003cli\u003eRed milo\u003c\/li\u003e\n      \u003cli\u003eWhite millet\u003c\/li\u003e\n      \u003cli\u003eRed millet\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGypsum \u0026amp; Calcium Phosphate\u003c\/strong\u003e for improved grain performance\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e0.22 Micron Filter Disk\u003c\/strong\u003e for gas exchange\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelf-Healing Injection Port\u003c\/strong\u003e for clean inoculation\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eSterilized at 15 PSI for 120 Minutes\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003ctable class=\"spec-table\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eComponent\u003c\/th\u003e\n      \u003cth\u003eDetails\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eJar Size\u003c\/td\u003e\n      \u003ctd\u003e32oz Wide Mouth Glass Jar\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePack Size\u003c\/td\u003e\n      \u003ctd\u003eSingle Jar\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eGrain Blend\u003c\/td\u003e\n      \u003ctd\u003eRye berries, white milo, red milo, white millet, red millet\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eAdditives\u003c\/td\u003e\n      \u003ctd\u003eGypsum and calcium phosphate\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eFilter Type\u003c\/td\u003e\n      \u003ctd\u003e0.22 micron filter disk\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eInjection Port\u003c\/td\u003e\n      \u003ctd\u003eSelf-healing port for spores or liquid culture\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSterilization\u003c\/td\u003e\n      \u003ctd\u003e15 PSI for 120 minutes\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eRecommended Inoculation\u003c\/td\u003e\n      \u003ctd\u003e3–4cc per jar\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eRecommended Usage Chart\u003c\/h2\u003e\n\u003cp\u003eUse this quick chart as a general guide when planning your grow.\u003c\/p\u003e\n\u003ctable class=\"usage-table\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eApplication\u003c\/th\u003e\n      \u003cth\u003eRecommended Amount\u003c\/th\u003e\n      \u003cth\u003eNotes\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSpore Syringe per Jar\u003c\/td\u003e\n      \u003ctd\u003e3–4cc\u003c\/td\u003e\n      \u003ctd\u003eInject through the self-healing port for clean inoculation\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eLiquid Culture per Jar\u003c\/td\u003e\n      \u003ctd\u003e5–7cc\u003c\/td\u003e\n      \u003ctd\u003eIdeal for faster colonization when using clean culture\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eBulk Substrate Ratio\u003c\/td\u003e\n      \u003ctd\u003e1–2 jars per 5 lbs of casing mix\u003c\/td\u003e\n      \u003ctd\u003eUse based on desired spawn-to-substrate ratio and colonization speed\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eTypical Monotub Use\u003c\/td\u003e\n      \u003ctd\u003e2–3 jars per monotub\u003c\/td\u003e\n      \u003ctd\u003eVaries by tub size and substrate depth\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eBest Use Case\u003c\/td\u003e\n      \u003ctd\u003eMonotubs, trays, bulk grows\u003c\/td\u003e\n      \u003ctd\u003eExcellent for expanding colonized grain into larger fruiting setups\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eDesigned for Faster Colonization\u003c\/h2\u003e\n\u003cp\u003eUnlike single-grain jars, this premium blend combines both larger and smaller grains to help distribute inoculant more effectively and support faster colonization throughout the jar. The result is a vigorous \u003cstrong\u003egrain spawn jar\u003c\/strong\u003e that is easy to shake, easy to expand, and ideal for growers who want dependable performance.\u003c\/p\u003e\n\n\u003cp\u003eThese \u003cstrong\u003emushroom grain jars\u003c\/strong\u003e are especially well-suited for growers moving into \u003cstrong\u003ebulk substrate cultivation\u003c\/strong\u003e and \u003cstrong\u003emonotub growing\u003c\/strong\u003e, where strong grain spawn can make a major difference in colonization speed and overall success. If you prefer larger-scale inoculation, you can also explore our \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/spawn-bags\"\u003espawn bags collection\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eFrom Jar to Bulk Monotub Grow\u003c\/h2\u003e\n\u003cp\u003eThe video below shows the process of inoculating a grain jar, allowing it to colonize, breaking it up, and mixing it with substrate for a bulk monotub grow.\u003c\/p\u003e\n\n\u003cdiv style=\"max-width: 760px; margin: 25px auto 10px auto;\" class=\"fade-in-media\"\u003e\n  \u003cdiv style=\"position: relative; overflow: hidden; border-radius: 10px; box-shadow: 0 12px 30px rgba(0,0,0,0.12);\"\u003e\n    \u003cdiv style=\"padding: 56.25% 0 0 0; position: relative;\"\u003e\n      \u003ciframe src=\"https:\/\/player.vimeo.com\/video\/1173563699\" title=\"5-Grain Spawn Jar to Bulk Monotub Grow Video\" style=\"position: absolute; top: 0; left: 0; width: 100%; height: 100%;\"\u003e\u003c\/iframe\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003ePremium Grain Spawn Jar for Mushroom Cultivation\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eMidwest Grow Kits Premium 5-Grain Spawn Jar\u003c\/strong\u003e gives growers a sterile, ready-to-use grain spawn option built for fast colonization and strong expansion into bulk substrate. Whether you are inoculating with spores or liquid culture, this jar is designed to simplify the process and improve consistency from start to finish.\u003c\/p\u003e\n\n\u003cdiv style=\"margin: 30px 0; padding: 22px; border-radius: 14px; background: linear-gradient(135deg, #f8fbff, #eef6ff); border: 1px solid #dbeafe;\"\u003e\n  \u003cdiv style=\"display: flex; flex-wrap: wrap; align-items: center; gap: 20px;\"\u003e\n    \u003cdiv style=\"flex: 1 1 260px;\"\u003e\n      \u003ch3 style=\"margin: 0 0 8px; font-size: 22px;\"\u003e\n        New to Grain Spawn?\n      \u003c\/h3\u003e\n\n      \u003cp style=\"margin: 0 0 14px; font-size: 15px; color: #374151;\"\u003e\n        Learn exactly how to inoculate, incubate, and fully colonize your spawn bags or grain jars with our step-by-step guide.\n      \u003c\/p\u003e\n\n      \u003ca href=\"https:\/\/www.midwestgrowkits.com\/pages\/spawn-bag-grain-jar-guide-how-to-inoculate-incubate-colonize\" style=\"display: inline-block; padding: 12px 18px; background: #1e90ff; color: white; border-radius: 8px; font-weight: 600; text-decoration: none;\"\u003e\n        Read the Full Guide →\n      \u003c\/a\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex: 1 1 180px;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Spawn_bag_guide_hero_1.png?v=1776512883\" alt=\"Spawn Bag and Grain Jar Guide for 5-grain spawn jars\" style=\"width: 100%; border-radius: 10px;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Midwest Grow Kit's","offers":[{"title":"Default Title","offer_id":46036883177621,"sku":"PQC2","price":8.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/5grain_jar_single_30oz_5469dcc7-5898-48db-b0a6-ca4055b0e45a.jpg?v=1747762972"},{"product_id":"the-tabletop-ecosphere™-fully-automated-mushroom-fruiting-chamber","title":"The Tabletop Ecosphere™ – Fully Automated Mushroom Fruiting Chamber","description":"\u003cp\u003e\u003cstrong\u003eThe Tabletop Ecosphere™ – Fully Automated Mushroom Fruiting Chamber\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTake your cultivation to the next level—right from your countertop.\u003cbr\u003e\u003cstrong\u003eThe Tabletop Ecosphere™\u003c\/strong\u003e is a fully automated, compact fruiting chamber designed for serious hobbyists and small-scale growers. Whether you're fruiting trays, tubs, bags, or up to four 5-pound blocks, this system provides the high humidity and fresh air exchange essential for gourmet and exotic mushrooms to thrive.\u003c\/p\u003e\n\u003cp\u003eMade from ultra-clear 10 mil heavy-duty vinyl with reinforced zippers, the chamber offers easy access and full visibility of your grow. Unlike bulky greenhouses or inconsistent monotubs, the \u003cstrong\u003eTabletop Ecosphere™\u003c\/strong\u003e delivers professional-level environmental control in a countertop footprint.\u003c\/p\u003e\n\u003cp\u003eAt the core of this system is a 3.0L ultrasonic Monsoon humidifier, paired with a digital humidity controller and positive pressure fan with carbon filter, allowing precise control of moisture and air exchange—no guesswork, just results.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003ePackage Includes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e   \u003cstrong\u003e 83 Quart Tabletop Greenhouse\u003c\/strong\u003e (18.5\" x 18.15\" x 13.5\") made from 10 mil clear vinyl with heavy-duty reinforced zippers\u003c\/li\u003e\n\u003cli\u003e    \u003cstrong\u003e3.0L Ultrasonic Monsoon Humidifier\u003c\/strong\u003e with quick-connect hose and mounting bracket\u003c\/li\u003e\n\u003cli\u003e    \u003cstrong\u003eDigital Humidity Controller\u003c\/strong\u003e – pre-calibrated for high-humidity mushroom environments\u003c\/li\u003e\n\u003cli\u003e   \u003cstrong\u003e 60mm Positive Pressure Fan\u003c\/strong\u003e with Carbon Filter and custom mounting bracket\u003c\/li\u003e\n\u003cli\u003e   \u003cstrong\u003e Thermometer\/Hygrometer Combo\u003c\/strong\u003e with custom mount for live temp\/humidity display\u003c\/li\u003e\n\u003cli\u003e  \u003cstrong\u003e  24-Hour Programmable Timer \u003c\/strong\u003efor fan or light control\u003c\/li\u003e\n\u003cli\u003e   \u003cstrong\u003e 2x 2.5” Filter Disks \u003c\/strong\u003efor extra air filtration\u003c\/li\u003e\n\u003cli\u003e    \u003cstrong\u003ePrinted Setup Guide \u0026amp; Illustrated Instructions\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e    \u003cstrong\u003eCompact Yet Spacious:\u003c\/strong\u003e 83-quart equivalent capacity holds monotubs, trays, bags, or four 5-pound fruiting blocks\u003c\/li\u003e\n\u003cli\u003e   \u003cstrong\u003e Crystal-Clear Access: \u003c\/strong\u003eSee-through vinyl and top\/side zippers make it easy to monitor and access your grow\u003c\/li\u003e\n\u003cli\u003e   \u003cstrong\u003e Hands-Free Automation: \u003c\/strong\u003eDial in your environment once and let the digital controls take over\u003c\/li\u003e\n\u003cli\u003e \u003cstrong\u003e   Balanced Air Exchange: \u003c\/strong\u003ePositive pressure airflow with carbon filtration maintains clean air without drying out your chamber\u003c\/li\u003e\n\u003cli\u003e    \u003cstrong\u003ePro-Level Monitoring: \u003c\/strong\u003eCustom-built thermometer\/hygrometer shows real-time conditions at a glance\u003c\/li\u003e\n\u003cli\u003e \u003cstrong\u003e   Space-Saving Design:\u003c\/strong\u003e Fits easily on a table or countertop without sacrificing performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhether you’re growing gourmet lion’s mane or exploring exotic species, the \u003cstrong\u003eTabletop Ecosphere™\u003c\/strong\u003e brings lab-quality control to your home setup—no ducting, no bulky tents, no compromises.\u003c\/p\u003e","brand":"Midwest Grow Kits","offers":[{"title":"Default Title","offer_id":46166624927893,"sku":"TBE1","price":124.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Tabletop_Eco_Main_web.jpg?v=1759542484"},{"product_id":"complete-all-in-one-mushroom-grow-bag-kit-6-lbs-for-wood-loving-mushrooms","title":"Complete XL ALL-IN-ONE Wood Lover's Mushroom Grow Bag Kit (6LB)","description":"\u003cp\u003e\u003cstrong\u003e6LB Mushroom Grow Bag Kit - Wood Lovers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eComplete XL ALL-IN-ONE Wood Lover’s Mushroom Grow Bag Kit (6LB)\u003c\/strong\u003e is our largest and most advanced all-in-one grow bag designed specifically for gourmet and functional wood-loving mushrooms. This pre-sterilized, professionally sealed system combines grain spawn, hardwood-based substrate, and a liquid culture syringe into one simple, high-performance grow solution.\u003c\/p\u003e\n\u003cp\u003eWith a layered grain-to-substrate design and a massive 6-pound fill weight, this kit delivers faster colonization, stronger flushes, and up to \u003cstrong\u003e20% higher yields\u003c\/strong\u003e compared to standard 5LB grow bags — all without the need for a flow hood or sterile lab setup.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhy Growers Choose This\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue All-In-One Design\u003c\/strong\u003e – Grain spawn, bulk substrate, and liquid culture included\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eXL 6LB Size\u003c\/strong\u003e – Larger substrate mass supports bigger harvests and multiple flushes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized for Wood Lovers\u003c\/strong\u003e – Hardwood, soy hulls, and bamboo blend\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBeginner-Friendly\u003c\/strong\u003e – No clean room or advanced equipment required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional-Grade Grow Bag\u003c\/strong\u003e – Large filter patch with strong sterile seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Fruiting Options\u003c\/strong\u003e – Fruit directly in the bag or transfer to a monotub or tent\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOver 20 Varieties Available\u003c\/strong\u003e – Choose gourmet or functional strains\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1× XL 6LB pre-sterilized all-in-one grow bag\u003c\/li\u003e\n\u003cli\u003eLayered 5-grain spawn blend (Red Milo, White Millet, Red Millet, White Sorghum, Rye)\u003c\/li\u003e\n\u003cli\u003eHardwood-based bulk substrate (hardwood, soy hulls, bamboo)\u003c\/li\u003e\n\u003cli\u003e10cc liquid culture syringe (strain selected at checkout)\u003c\/li\u003e\n\u003cli\u003eInjection port and high-flow filter patch (pre-installed)\u003c\/li\u003e\n\u003cli\u003eBasic grow instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eInoculate\u003c\/strong\u003e – Inject the liquid culture into the grain layer through the self-healing injection port.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColonize\u003c\/strong\u003e – Allow the grain to fully colonize (typically 10–14 days).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMix\u003c\/strong\u003e – Break and shake the bag to combine grain and substrate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRe-Colonize\u003c\/strong\u003e – Let the mixed substrate colonize for 1–2 weeks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFruit\u003c\/strong\u003e – Follow strain-specific fruiting instructions and harvest fresh mushrooms at home.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eYou can fruit directly from the bag or transfer to a monotub or humidity tent depending on your setup and strain preference.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTotal Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6 pounds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGrow Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAll-In-One grow bag (grain → bulk substrate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpawn Included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes – 5-grain blend\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes – hardwood, soy hulls, bamboo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInoculant Included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes – 10cc liquid culture syringe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFruiting Options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIn-bag or monotub \/ tent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch2\u003eReal Results from the Complete XL ALL-IN-ONE Wood Lover’s Grow Bag\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg style=\"max-width: 100%; height: auto; border-radius: 8px;\" alt=\"Lion's Mane mushrooms grown from the Complete XL All-in-One Wood Lover’s Grow Bag\" src=\"https:\/\/i.ibb.co\/39t9yqCv\/lionsmane-on-counter-web.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003eGrowers consistently report thick, healthy clusters and multiple flushes when using the Complete XL Wood Lover’s Grow Bag. The large substrate mass and optimized wood-based blend create ideal conditions for dense, high-quality fruits — even on a first grow.\u003c\/p\u003e\n\u003cp\u003eThis kit is trusted by beginners learning the process and experienced cultivators looking for reliability, consistency, and strong yields without complexity.\u003c\/p\u003e","brand":"Myco Labs","offers":[{"title":"Lion's Mane","offer_id":46457583042709,"sku":"AIO1","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Shiitake","offer_id":46457583075477,"sku":"AIO2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Brown Beech","offer_id":46457583108245,"sku":"AIO3","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Black Pearl King Oyster","offer_id":46457583141013,"sku":"AIO4","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Maitake (Hen of the Woods)","offer_id":46457583173781,"sku":"AIO5","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Antler Reishi","offer_id":46457583206549,"sku":"AIO6","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Red Reishi","offer_id":46457583239317,"sku":"ALL12","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Enoki","offer_id":46457583272085,"sku":"ALL13","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Pioppino","offer_id":46457583304853,"sku":"ALL14","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Blue Oyster","offer_id":46457583337621,"sku":"ALL15","price":25.99,"currency_code":"USD","in_stock":true},{"title":"King Trumpet Oyster","offer_id":46457583370389,"sku":"ALL16","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Golden Oyster","offer_id":46457583403157,"sku":"ALL17","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Pink Oyster","offer_id":46457583435925,"sku":"ALL18","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Pearl White Oyster","offer_id":46457583468693,"sku":"ALL19","price":25.99,"currency_code":"USD","in_stock":true},{"title":"King Blue Oyster","offer_id":46457583501461,"sku":"ALL20","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Chestnut","offer_id":46457583534229,"sku":"ALL21","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Turkey Tail","offer_id":46457583599765,"sku":"ALL23","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Pink Lion's Mane","offer_id":46457583632533,"sku":"ALL24","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Black Reishi","offer_id":46457584517269,"sku":null,"price":25.99,"currency_code":"USD","in_stock":true},{"title":"Phoenix Oyster","offer_id":46457584550037,"sku":null,"price":25.99,"currency_code":"USD","in_stock":true},{"title":"Elm Oyster","offer_id":46457584582805,"sku":null,"price":25.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/XL_ALL_IN_ONE_WOOD_LOVERS_MAIN_New_Product.jpg?v=1759281368"},{"product_id":"lions-mane-colonized-black-agar-plate","title":"Lion's Mane Colonized Black Agar Plate","description":"\u003cdiv class=\"mgk-product-content\"\u003e\n\u003cp\u003e\u003cstrong\u003eFully colonized Lion's Mane (\u003cem\u003eHericium erinaceus\u003c\/em\u003e) agar plate\u003c\/strong\u003e, grown on our specialty black agar in a 90mm polystyrene Petri dish. Made from our master culture and 1st-generation isolated genetics — the same strain we use in our Lion's Mane liquid culture syringes and grow kits. Each plate is produced fresh at our Illinois lab, fully colonized before it ships, and ready to use the moment it arrives.\u003c\/p\u003e\n\u003cdiv class=\"mgk-callout mgk-callout-ships\"\u003e\n\u003cstrong\u003e✓ Ships Same or Next Business Day\u003c\/strong\u003e\u003cbr\u003eUnlike most agar plate sellers who make plates to order with 2–4 week lead times, our plates are colonized and ready to ship from inventory. Order by 2 PM CT, ships the same business day.\u003c\/div\u003e\n\u003ch3\u003eWhy Black Agar for Lion's Mane?\u003c\/h3\u003e\n\u003cp\u003eLion's Mane mycelium is notoriously difficult to photograph and evaluate on standard amber-colored MEA — the white, cottony growth blends into the medium and makes it hard to spot contamination or assess vigor. We solved this by formulating a specialty \u003cstrong\u003eblack agar\u003c\/strong\u003e (our standard MEA recipe with food-grade activated carbon added). The pitch-black background makes the white Lion's Mane mycelium pop visually, so you can:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEasily inspect for any sign of contamination (it shows up immediately against black)\u003c\/li\u003e\n\u003cli\u003eEvaluate growth vigor and rhizomorphic patterns at a glance\u003c\/li\u003e\n\u003cli\u003ePhotograph your cultures clearly for documentation or sharing\u003c\/li\u003e\n\u003cli\u003eIdentify and isolate the strongest sectors when expanding to new plates\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is the same black agar formulation used by serious cultivators and research labs working with light-colored mycelium species — and it's why we chose Lion's Mane as the flagship species for the format.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Receive\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne 90mm polystyrene Petri dish\u003c\/strong\u003e, parafilm-sealed for sterility during transit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e~18mL black agar\u003c\/strong\u003e — our MEA formulation enhanced with food-grade activated carbon\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully colonized\u003c\/strong\u003e with healthy, white Lion's Mane mycelium (typically 90–100% coverage at ship time)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1st-generation isolated genetics\u003c\/strong\u003e from our master culture — the same strain in our Lion's Mane LC syringes and grow kits\u003c\/li\u003e\n\u003cli\u003eLab-inspected for contamination before ship\u003c\/li\u003e\n\u003cli\u003eProduced fresh at Myco Labs (Illinois, USA)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to Use Your Agar Plate\u003c\/h3\u003e\n\u003cp\u003eA single colonized agar plate is one of the most versatile tools in mushroom cultivation. From one plate, you can:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransfer to grain\u003c\/strong\u003e — cut a small wedge of colonized agar and place it onto sterilized grain (rye, our 5-grain blend, etc.) to create grain spawn\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCreate liquid culture\u003c\/strong\u003e — transfer agar wedges into sterile liquid media to produce your own LC syringes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpand to more plates\u003c\/strong\u003e — divide one plate into 5–10 fresh plates to build a long-term genetic library\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIsolate strong sectors\u003c\/strong\u003e — pick the most vigorous growth and transfer it to a fresh plate to refine your genetics over generations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eLion's Mane Growing Characteristics\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLatin name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cem\u003eHericium erinaceus\u003c\/em\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMycelium appearance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite, cottony, coral-like rhizomorphic growth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColonization speed on agar\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eModerate — typically 10–14 days at 70–75°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePreferred grain\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRye, our 5-grain blend, or hardwood-supplemented grain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFruiting substrate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHardwood sawdust + bran, supplemented hardwood pellets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFruiting temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e60–70°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDifficulty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBeginner-friendly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUse category\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGourmet + functional (nootropic compounds)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003ePlate Specifications\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePlate size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e90mm Petri dish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePlate material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolystyrene (clear, for maximum contrast against black agar)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAgar type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack agar — MEA + food-grade activated carbon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAgar volume\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~18mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeal\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eParafilm M, lab-grade\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePoured and inoculated under HEPA-filtered laminar flow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSterility \u0026amp; Quality Standards\u003c\/h3\u003e\n\u003cp\u003eEvery plate is poured, inoculated, and inspected at Myco Labs under HEPA-filtered laminar flow. Plates are sealed with parafilm immediately after inoculation and incubated in a dedicated clean room until fully colonized. Each plate is visually inspected against the black background — where contamination is unmistakable — before being approved for shipment. If it doesn't look right, it doesn't ship.\u003c\/p\u003e\n\u003ch3\u003eShipping \u0026amp; Handling\u003c\/h3\u003e\n\u003cp\u003ePlates ship in insulated, padded packaging.  In summer months (May–September) or to hot-climate destinations, we include a cold pack at no additional cost. Inspect your plate within 24 hours of arrival — minor condensation on the lid is normal and harmless. Store in a cool, dark place (55–70°F) until ready to use; an unopened, sealed plate stays viable for 60–90 days at room temperature, or 6–9 months refrigerated at 35–40°F.\u003c\/p\u003e\n\u003ch3\u003eRecommended Companion Products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/liquid-culture-syringes\/products\/lions-mane-liquid-culture-syringe-10cc\"\u003eLion's Mane Liquid Culture Syringe\u003c\/a\u003e\u003ca href=\"\/products\/lions-mane-liquid-culture\"\u003e\u003c\/a\u003e — same genetics, ready-to-inject format\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/collections\/grain-spawn\"\u003eGrain Spawn Bags\u003c\/a\u003e — for transferring your colonized agar to bulk\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/spray-grow-gourmet-kits\/products\/lions-mane-mushroom-grow-kit-5lbs\"\u003eLion's Mane All-in-One Grow Kit\u003c\/a\u003e — for fruiting from the same strain\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/collections\/agar-supplies\"\u003eAgar Supplies\u003c\/a\u003e — sterile plates, scalpels, parafilm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eWhat is black agar and why do you use it for Lion's Mane?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eBlack agar is our standard malt extract agar (MEA) recipe with food-grade activated carbon added, which gives it a deep black color. We use it specifically for Lion's Mane because the species' white, cottony mycelium is very difficult to see and evaluate on standard amber-colored MEA. Against a black background, the mycelium stands out clearly — making it dramatically easier to spot contamination, assess vigor, and isolate strong sectors. The activated carbon is inert and doesn't affect mycelium health.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eHow fast do these ship compared to other agar plate sellers?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eSame or next business day. Most agar plate sellers (including the larger names in the industry) make plates to order, meaning you wait 2–4 weeks after ordering for the plate to be poured, inoculated, and colonized. Ours are produced on a rolling schedule and held in inventory fully colonized, ready to ship the moment you order.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eAre these the same genetics as your liquid culture syringes and grow kits?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eYes. Every agar plate we sell is grown from our master culture and 1st-generation isolated Lion's Mane strain — the same genetics in our LC syringes and grow kits. Lab-tested, commercial-grade, and refined over multiple generations for vigor and yield.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eWhy 90mm plates instead of 100mm?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003e90mm is the global standard for mycology agar work and provides the same working surface and yield as 100mm for all practical cultivation purposes. It also ships more efficiently and is the format used by most professional labs.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eHow long will the plate stay viable?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eAn unopened, parafilm-sealed plate stored at 55–70°F in a dark place stays viable for 60–90 days. For longer storage, transfer the culture to a refrigerated plate at 35–40°F, where it can stay viable for 6–12 months.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eCan I use this plate to make grain spawn directly?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eYes — that's one of the most common uses. Under a still-air box or laminar flow hood, cut a small wedge (about the size of a pencil eraser) from the colonized plate and drop it into a sterilized grain spawn bag or jar. Colonization typically completes in 14–21 days.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eWhat if my plate arrives contaminated or damaged?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eWe guarantee every plate ships in clean, fully colonized condition. If you receive a contaminated or damaged plate, contact us within 5 days of delivery with a photo and we'll replace it free of charge.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Myco Labs","offers":[{"title":"Default Title","offer_id":47392201244821,"sku":"AGRLM","price":20.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/LionsMane_mushroom_black_Agar.jpg?v=1780140192"},{"product_id":"blue-oyster-colonized-agar-plate","title":"Blue Oyster Colonized Agar Plate","description":"\u003cdiv class=\"mgk-product-content\"\u003e\n\u003cp\u003e\u003cstrong\u003eFully colonized Blue Oyster (\u003cem\u003ePleurotus ostreatus\u003c\/em\u003e var. \u003cem\u003ecolumbinus\u003c\/em\u003e) agar plate\u003c\/strong\u003e, grown from our master culture and 1st-generation isolated genetics — the same vigorous strain we use in our Blue Oyster liquid culture syringes and grow kits. Each plate is produced fresh at our Illinois lab on standard malt extract agar (MEA), fully colonized before it ships, and ready to ship from inventory — usually within 1 business day.\u003c\/p\u003e\n\u003cdiv class=\"mgk-callout mgk-callout-ships\"\u003e\n\u003cstrong\u003e✓ Usually Ships Next Business Day\u003c\/strong\u003e\u003cbr\u003eUnlike most agar plate sellers who make plates to order with 2–4 week lead times, our plates are colonized and held in inventory — ready to ship from our Illinois lab. Most orders ship within 1 business day; multi-item orders may take an additional 1–2 days to process.\u003c\/div\u003e\n\u003ch3\u003eWhy Blue Oyster on Agar?\u003c\/h3\u003e\n\u003cp\u003eBlue Oyster is one of the most rewarding species to work with on agar — and one of the most popular for good reason. The mycelium is aggressive, fast-growing, and forms strong rhizomorphic patterns that are easy to evaluate visually on amber-colored MEA. Blue Oyster colonizes faster than almost any other gourmet species, which makes it ideal for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBeginners learning agar transfer technique — mistakes are forgiving because the mycelium outpaces most contamination\u003c\/li\u003e\n\u003cli\u003eBuilding large genetic libraries quickly through plate-to-plate expansion\u003c\/li\u003e\n\u003cli\u003eRapid grain spawn production for high-turnover commercial cultivation\u003c\/li\u003e\n\u003cli\u003eCold-weather cultivation — Blue Oyster fruits at lower temperatures than most oysters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe deep blue-gray caps it produces in cool conditions also make it one of the most visually striking gourmet mushrooms to grow at home.\u003c\/p\u003e\n\u003ch3\u003eShatterproof Polypropylene Plates\u003c\/h3\u003e\n\u003cp\u003eEvery Blue Oyster plate ships in a \u003cstrong\u003e90mm polypropylene Petri dish\u003c\/strong\u003e — not the standard polystyrene used by most agar sellers. Polypropylene flexes under impact instead of cracking, which means your plate arrives intact even after rough handling in transit. This is a meaningful upgrade: a cracked plate isn't just a damaged product, it's a contamination risk, since a crack breaks the parafilm seal and exposes the culture to airborne contaminants. We chose polypropylene specifically to eliminate that problem.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e(The exception in our lineup is Lion's Mane, which uses clear polystyrene to maximize contrast against our specialty black agar.)\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Receive\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne 90mm polypropylene Petri dish\u003c\/strong\u003e, parafilm-sealed for sterility during transit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e~18mL malt extract agar (MEA)\u003c\/strong\u003e — our standard formulation for gourmet species\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully colonized\u003c\/strong\u003e with healthy, white Blue Oyster mycelium (typically 90–100% coverage at ship time)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1st-generation isolated genetics\u003c\/strong\u003e from our master culture — the same strain in our Blue Oyster LC syringes and grow kits\u003c\/li\u003e\n\u003cli\u003eLab-inspected for contamination before ship\u003c\/li\u003e\n\u003cli\u003eProduced fresh at Myco Labs (Illinois, USA)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to Use Your Agar Plate\u003c\/h3\u003e\n\u003cp\u003eA single colonized agar plate is one of the most versatile tools in mushroom cultivation. From one plate, you can:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransfer to grain\u003c\/strong\u003e — cut a small wedge of colonized agar and place it onto sterilized grain (rye, our 5-grain blend, etc.) to create grain spawn. Blue Oyster colonizes grain in 10–14 days under good conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCreate liquid culture\u003c\/strong\u003e — transfer agar wedges into sterile liquid media to produce your own LC syringes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpand to more plates\u003c\/strong\u003e — Blue Oyster's aggressive growth makes it ideal for dividing one plate into 8–10 fresh plates for a long-term genetic library\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIsolate strong sectors\u003c\/strong\u003e — pick the most vigorous growth and transfer it to a fresh plate to refine your genetics over generations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNew to agar work? See our \u003ca href=\"https:\/\/www.midwestgrowkits.com\/pages\/spawn-bag-grain-jar-guide-how-to-inoculate-incubate-colonize\"\u003egrain transfer tutorial\u003c\/a\u003e\u003ca href=\"\/blogs\/news\/spawn-bag-grain-jar-guide-how-to-inoculate\"\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eBlue Oyster Growing Characteristics\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLatin name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cem\u003ePleurotus ostreatus\u003c\/em\u003e var. \u003cem\u003ecolumbinus\u003c\/em\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMycelium appearance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBright white, aggressive, strongly rhizomorphic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColonization speed on agar\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFast — typically 7–10 days at 70–75°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePreferred grain\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRye, our 5-grain blend, or supplemented hardwood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFruiting substrate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStraw, hardwood sawdust, supplemented hardwood pellets, masters mix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFruiting temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e45–65°F (cool-weather fruiter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCap color\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDeep blue-gray when cool, fading to gray\/tan in warmer temps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDifficulty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBeginner-friendly — among the most forgiving gourmet species\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUse category\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGourmet (culinary)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003ePlate Specifications\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePlate size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e90mm Petri dish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePlate material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene — shatterproof, flexes under impact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAgar type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard malt extract agar (MEA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAgar volume\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~18mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeal\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eParafilm M, lab-grade\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePoured and inoculated under HEPA-filtered laminar flow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSterility \u0026amp; Quality Standards\u003c\/h3\u003e\n\u003cp\u003eEvery plate is poured, inoculated, and inspected at Myco Labs under HEPA-filtered laminar flow. Plates are sealed with parafilm immediately after inoculation and incubated in a dedicated clean room until fully colonized. Each plate is visually inspected for contamination before being approved for shipment — if it doesn't look right, it doesn't ship.\u003c\/p\u003e\n\u003ch3\u003eShipping \u0026amp; Handling\u003c\/h3\u003e\n\u003cp\u003eAll agar plates are produced ahead of time and held in inventory — they are not made-to-order. Most orders ship within \u003cstrong\u003e1 business day\u003c\/strong\u003e of being placed. Multi-item orders (especially those including grow kits, grain spawn, or other made-fresh products) may take \u003cstrong\u003e1–2 additional business days\u003c\/strong\u003e to process so we can pack everything together. Orders placed Friday afternoon, weekends, or holidays ship the next business day.\u003c\/p\u003e\n\u003cp\u003ePlates ship in insulated, padded packaging via USPS Priority Mail (typically 2–4 days in transit). In summer months (May–September) or to hot-climate destinations, we include a cold pack at no additional cost. Inspect your plate within 24 hours of arrival — minor condensation on the lid is normal and harmless. Store in a cool, dark place (55–70°F) until ready to use; an unopened, sealed plate stays viable for 60–90 days at room temperature, or 6–12 months refrigerated at 35–40°F.\u003c\/p\u003e\n\u003ch3\u003eRecommended Companion Products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/liquid-culture-syringes\/products\/blue-oyster-liquid-culture-syringe-10cc\"\u003eBlue Oyster Liquid Culture Syringe\u003c\/a\u003e — same genetics, ready-to-inject format\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/grain-spawn\"\u003eGrain Spawn Bags\u003c\/a\u003e\u003ca href=\"\/collections\/grain-spawn\"\u003e\u003c\/a\u003e — for transferring your colonized agar to bulk\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/spray-grow-gourmet-kits\/products\/blue-oyster-mushroom-grow-kit-5lbs\"\u003eBlue Oyster All-in-One Grow Kit\u003c\/a\u003e\u003ca href=\"\/products\/blue-oyster-grow-kit\"\u003e\u003c\/a\u003e — for fruiting from the same strain\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/collections\/agar-supplies\"\u003eAgar Supplies\u003c\/a\u003e — sterile plates, scalpels, parafilm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eHow fast do these ship compared to other agar plate sellers?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eMost orders ship within 1 business day. Compare that to other agar plate sellers (including the larger names in the industry) who make plates to order, meaning you wait 2–4 weeks after ordering for the plate to be poured, inoculated, and colonized. Ours are produced on a rolling schedule and held in inventory fully colonized, ready to ship the moment you order. Multi-item orders may take an additional 1–2 business days to process so we can pack everything together.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eWhy do you use polypropylene plates instead of polystyrene?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003ePolypropylene plates flex under impact instead of cracking. A cracked plate isn't just damaged — it's a contamination risk, since the crack breaks the parafilm seal and exposes the culture to airborne contaminants. Polypropylene eliminates that problem entirely. The plates cost us more, but the result is that your culture arrives intact and uncontaminated. (Our Lion's Mane plates are the one exception — those use clear polystyrene to maximize visual contrast against our specialty black agar.)\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eAre these the same genetics as your liquid culture syringes and grow kits?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eYes. Every agar plate is grown from our master culture and 1st-generation isolated Blue Oyster strain — the same genetics in our LC syringes and grow kits. Lab-tested, commercial-grade, and refined over multiple generations for vigor and yield.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eHow long will the plate stay viable?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eAn unopened, parafilm-sealed plate stored at 55–70°F in a dark place stays viable for 60–90 days. For longer storage, transfer the culture to a refrigerated plate at 35–40°F, where it can stay viable for 6–12 months.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eCan I use this plate to make grain spawn directly?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eYes — that's one of the most common uses. Under a still-air box or laminar flow hood, cut a small wedge (about the size of a pencil eraser) from the colonized plate and drop it into a sterilized grain spawn bag or jar. Blue Oyster typically colonizes grain in 10–14 days.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eIs Blue Oyster a good species for beginners?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eYes — Blue Oyster is one of the most beginner-friendly gourmet species. Its aggressive growth outpaces most contaminants, it fruits in a wide temperature range, and it accepts a variety of substrates (straw, hardwood, masters mix). If you're new to agar work or to mushroom cultivation in general, this is an excellent species to start with.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eWhat if my plate arrives contaminated or damaged?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eWe guarantee every plate ships in clean, fully colonized condition. If you receive a contaminated or damaged plate, contact us within 5 days of delivery with a photo and we'll replace it free of charge.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Myco Labs","offers":[{"title":"Default Title","offer_id":47392458375317,"sku":"AGRBL","price":15.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Blue_oyster_colonized_agar.jpg?v=1780078280"},{"product_id":"pink-oyster-colonized-agar-plate","title":"Pink Oyster Colonized Agar Plate","description":"\u003cdiv class=\"mgk-product-content\"\u003e\n\u003cp\u003e\u003cstrong\u003eFully colonized Pink Oyster (\u003cem\u003ePleurotus djamor\u003c\/em\u003e) agar plate\u003c\/strong\u003e, grown from our master culture and 1st-generation isolated genetics — the same fast-growing strain we use in our Pink Oyster liquid culture syringes and grow kits. Each plate is produced fresh at our Illinois lab on standard malt extract agar (MEA), fully colonized before it ships, and ready to ship from inventory — usually within 1 business day.\u003c\/p\u003e\n\u003cdiv class=\"mgk-callout mgk-callout-ships\"\u003e\n\u003cstrong\u003e✓ Usually Ships Next Business Day\u003c\/strong\u003e\u003cbr\u003eUnlike most agar plate sellers who make plates to order with 2–4 week lead times, our plates are colonized and held in inventory — ready to ship from our Illinois lab. Most orders ship within 1 business day; multi-item orders may take an additional 1–2 days to process.\u003c\/div\u003e\n\u003ch3\u003eWhy Pink Oyster on Agar?\u003c\/h3\u003e\n\u003cp\u003ePink Oyster is one of the most exciting species to work with on agar — and one of the most visually rewarding to grow. The mycelium is extraordinarily fast-growing, colonizing agar in as little as 5–7 days at warm temperatures. This aggressive growth makes it ideal for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWarm-climate cultivators — Pink Oyster is one of the few gourmet species that thrives in summer temperatures, fruiting at 65–80°F when most oysters won't\u003c\/li\u003e\n\u003cli\u003eBeginners learning agar transfer — the fast growth dramatically outpaces most contamination\u003c\/li\u003e\n\u003cli\u003eRapid grain spawn turnaround for commercial cultivation\u003c\/li\u003e\n\u003cli\u003eQuick plate-to-plate expansion when building a genetic library\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe mature fruit bodies are an unmistakable salmon-to-coral pink, with a slightly bacon-like flavor when crisped in a pan — making this one of the most popular gourmet species for home cultivators looking for something visually distinctive on the plate.\u003c\/p\u003e\n\u003ch3\u003eShatterproof Polypropylene Plates\u003c\/h3\u003e\n\u003cp\u003eEvery Pink Oyster plate ships in a \u003cstrong\u003e90mm polypropylene Petri dish\u003c\/strong\u003e — not the standard polystyrene used by most agar sellers. Polypropylene flexes under impact instead of cracking, which means your plate arrives intact even after rough handling in transit. This is a meaningful upgrade: a cracked plate isn't just a damaged product, it's a contamination risk, since a crack breaks the parafilm seal and exposes the culture to airborne contaminants. We chose polypropylene specifically to eliminate that problem.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e(The exception in our lineup is Lion's Mane, which uses clear polystyrene to maximize contrast against our specialty black agar.)\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Receive\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne 90mm polypropylene Petri dish\u003c\/strong\u003e, parafilm-sealed for sterility during transit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e~18mL malt extract agar (MEA)\u003c\/strong\u003e — our standard formulation for gourmet species\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully colonized\u003c\/strong\u003e with healthy, white-to-pinkish Pink Oyster mycelium (typically 90–100% coverage at ship time)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1st-generation isolated genetics\u003c\/strong\u003e from our master culture — the same strain in our Pink Oyster LC syringes and grow kits\u003c\/li\u003e\n\u003cli\u003eLab-inspected for contamination before ship\u003c\/li\u003e\n\u003cli\u003eProduced fresh at Myco Labs (Illinois, USA)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to Use Your Agar Plate\u003c\/h3\u003e\n\u003cp\u003eA single colonized agar plate is one of the most versatile tools in mushroom cultivation. From one plate, you can:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransfer to grain\u003c\/strong\u003e — cut a small wedge of colonized agar and place it onto sterilized grain (rye, our 5-grain blend, etc.) to create grain spawn. Pink Oyster colonizes grain in 7–12 days under warm conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCreate liquid culture\u003c\/strong\u003e — transfer agar wedges into sterile liquid media to produce your own LC syringes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpand to more plates\u003c\/strong\u003e — Pink Oyster's aggressive growth makes it ideal for dividing one plate into 8–10 fresh plates for a long-term genetic library\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIsolate strong sectors\u003c\/strong\u003e — pick the most vigorous growth and transfer it to a fresh plate to refine your genetics over generations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNew to agar work? See our \u003ca href=\"https:\/\/www.midwestgrowkits.com\/blogs\/blog-1-growing-101-more\/how-to-use-agar-plates-for-mushroom-cultivation-2026-guide\"\u003egrain transfer tutorial\u003c\/a\u003e\u003ca href=\"https:\/\/www.midwestgrowkits.com\/pages\/spawn-bag-grain-jar-guide-how-to-inoculate-incubate-colonize\"\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003ePink Oyster Growing Characteristics\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLatin name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cem\u003ePleurotus djamor\u003c\/em\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMycelium appearance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite-to-pinkish, very aggressive, fluffy with rhizomorphic edges\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColonization speed on agar\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVery fast — typically 5–7 days at 75–80°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePreferred grain\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRye, our 5-grain blend, or supplemented hardwood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFruiting substrate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStraw, hardwood sawdust, supplemented hardwood pellets, masters mix, even coffee grounds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFruiting temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e65–80°F (warm-weather fruiter — rare among oysters)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCap color\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBright salmon-to-coral pink, fading to tan as fruit matures\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFlavor profile\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMild, slightly bacon-like when crisped; loses pink color when cooked\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDifficulty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBeginner-friendly — among the easiest gourmet species to fruit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUse category\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGourmet (culinary) — especially popular for summer growing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003ePlate Specifications\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePlate size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e90mm Petri dish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePlate material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene — shatterproof, flexes under impact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAgar type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard malt extract agar (MEA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAgar volume\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~18mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeal\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eParafilm M, lab-grade\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePoured and inoculated under HEPA-filtered laminar flow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSterility \u0026amp; Quality Standards\u003c\/h3\u003e\n\u003cp\u003eEvery plate is poured, inoculated, and inspected at Myco Labs under HEPA-filtered laminar flow. Plates are sealed with parafilm immediately after inoculation and incubated in a dedicated clean room until fully colonized. Each plate is visually inspected for contamination before being approved for shipment — if it doesn't look right, it doesn't ship.\u003c\/p\u003e\n\u003ch3\u003eShipping \u0026amp; Handling\u003c\/h3\u003e\n\u003cp\u003eAll agar plates are produced ahead of time and held in inventory — they are not made-to-order. Most orders ship within \u003cstrong\u003e1 business day\u003c\/strong\u003e of being placed. Multi-item orders (especially those including grow kits, grain spawn, or other made-fresh products) may take \u003cstrong\u003e1–2 additional business days\u003c\/strong\u003e to process so we can pack everything together. Orders placed Friday afternoon, weekends, or holidays ship the next business day.\u003c\/p\u003e\n\u003cp\u003ePlates ship in insulated, padded packaging via USPS Priority Mail (typically 2–4 days in transit). In summer months (May–September) or to hot-climate destinations, we include a cold pack at no additional cost. Inspect your plate within 24 hours of arrival — minor condensation on the lid is normal and harmless. Store in a cool, dark place (55–70°F) until ready to use; an unopened, sealed plate stays viable for 60–90 days at room temperature, or 6–12 months refrigerated at 35–40°F.\u003c\/p\u003e\n\u003ch3\u003eRecommended Companion Products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/liquid-culture-syringes\/products\/pink-oyster-liquid-culture-syringe-10cc\"\u003ePink Oyster Liquid Culture Syringe\u003c\/a\u003e\u003ca href=\"\/products\/pink-oyster-liquid-culture\"\u003e\u003c\/a\u003e — same genetics, ready-to-inject format\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/collections\/grain-spawn\"\u003eGrain Spawn Bags\u003c\/a\u003e — for transferring your colonized agar to bulk\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/spray-grow-gourmet-kits\/products\/pink-oyster-mushroom-grow-kit-5lbs\"\u003ePink Oyster All-in-One Grow Kit\u003c\/a\u003e — for fruiting from the same strain\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/colonized-agar-plates\"\u003eBrowse All Colonized Agar Plates\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eHow fast do these ship compared to other agar plate sellers?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eMost orders ship within 1 business day. Compare that to other agar plate sellers (including the larger names in the industry) who make plates to order, meaning you wait 2–4 weeks after ordering for the plate to be poured, inoculated, and colonized. Ours are produced on a rolling schedule and held in inventory fully colonized, ready to ship the moment you order. Multi-item orders may take an additional 1–2 business days to process so we can pack everything together.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eWhy is Pink Oyster a good species for summer cultivation?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003ePink Oyster is one of the few gourmet mushroom species that fruits well in warm temperatures (65–80°F). Most oysters and other gourmets prefer 55–65°F, which makes summer cultivation difficult without temperature control. Pink Oyster thrives in summer heat, making it ideal for growers without dedicated cooling — and it's the species we most often recommend for warm-climate cultivators or anyone growing through the summer months.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eWhy do you use polypropylene plates instead of polystyrene?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003ePolypropylene plates flex under impact instead of cracking. A cracked plate isn't just damaged — it's a contamination risk, since the crack breaks the parafilm seal and exposes the culture to airborne contaminants. Polypropylene eliminates that problem entirely. The plates cost us more, but the result is that your culture arrives intact and uncontaminated. (Our Lion's Mane plates are the one exception — those use clear polystyrene to maximize visual contrast against our specialty black agar.)\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eAre these the same genetics as your liquid culture syringes and grow kits?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eYes. Every agar plate is grown from our master culture and 1st-generation isolated Pink Oyster strain — the same genetics in our LC syringes and grow kits. Lab-tested, commercial-grade, and refined over multiple generations for vigor and yield.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eHow long will the plate stay viable?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eAn unopened, parafilm-sealed plate stored at 55–70°F in a dark place stays viable for 60–90 days. For longer storage, transfer the culture to a refrigerated plate at 35–40°F, where it can stay viable for 6–12 months. \u003cem\u003eNote: Pink Oyster is more sensitive to cold than most species — extended refrigeration can slow recovery time. If you're storing long-term, consider keeping plates at the warmer end (40°F) and refreshing every 4–6 months.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eCan I use this plate to make grain spawn directly?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eYes — that's one of the most common uses. Under a still-air box or laminar flow hood, cut a small wedge (about the size of a pencil eraser) from the colonized plate and drop it into a sterilized grain spawn bag or jar. Pink Oyster typically colonizes grain in 7–12 days at room temperature — one of the fastest gourmet species.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eWhy do my Pink Oysters lose their pink color when I cook them?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003ePink Oyster's signature salmon-pink color is heat-sensitive and fades to tan-brown when cooked — this is normal and doesn't affect flavor or quality. For maximum visual impact, harvest at peak color (before caps fully flatten) and consider quick high-heat preparations like a sear, which keeps more color than slow simmering. The flavor takes on a slightly bacon-like quality when crisped in oil.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eWhat if my plate arrives contaminated or damaged?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eWe guarantee every plate ships in clean, fully colonized condition. If you receive a contaminated or damaged plate, contact us within 5 days of delivery with a photo and we'll replace it free of charge.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Myco Labs","offers":[{"title":"Default Title","offer_id":47393806418069,"sku":"AGRPK","price":20.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Pink_oyster_with_mushroom.jpg?v=1780139075"},{"product_id":"shiitake-3790-colonized-agar-plate","title":"Shiitake 3790 Colonized Agar Plate","description":"\u003cdiv class=\"mgk-product-content\"\u003e\n\u003cp\u003e\u003cstrong\u003eFully colonized Shiitake strain 3790 (\u003cem\u003eLentinula edodes\u003c\/em\u003e) agar plate\u003c\/strong\u003e, grown from our master culture and 1st-generation isolated genetics — the same commercial-grade strain we use in our Shiitake liquid culture syringes and grow kits. Each plate is produced fresh at our Illinois lab on standard malt extract agar (MEA), fully colonized before it ships, and ready to ship from inventory — usually within 1 business day.\u003c\/p\u003e\n\u003cdiv class=\"mgk-callout mgk-callout-ships\"\u003e\n\u003cstrong\u003e✓ Usually Ships Next Business Day\u003c\/strong\u003e\u003cbr\u003eUnlike most agar plate sellers who make plates to order with 2–4 week lead times, our plates are colonized and held in inventory — ready to ship from our Illinois lab. Most orders ship within 1 business day; multi-item orders may take an additional 1–2 days to process.\u003c\/div\u003e\n\u003ch3\u003eWhy Shiitake Strain 3790?\u003c\/h3\u003e\n\u003cp\u003eStrain 3790 is one of the most respected commercial Shiitake genetics in the world. Originally developed for industrial-scale cultivation on supplemented hardwood sawdust, it has become the benchmark strain for serious gourmet growers because it consistently delivers:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVigorous, reliable fruiting\u003c\/strong\u003e — strain 3790 fruits readily across a wide temperature range, with less finicky environmental requirements than many wild or specialty Shiitake strains\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDense, meaty caps\u003c\/strong\u003e with the classic dark brown color and characteristic radial cracking when grown under cooler conditions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrong yields per block\u003c\/strong\u003e — high biological efficiency compared to ornamental or wild-isolated strains\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple flush capability\u003c\/strong\u003e — well-managed blocks can produce 2–3 flushes over several months\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad substrate compatibility\u003c\/strong\u003e — performs well on supplemented hardwood sawdust, hardwood pellets, and master's mix formulations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you've worked with Shiitake before, strain 3790 is the genetics most commercial farms are using. If you're new to Shiitake, this is the strain we'd recommend starting with — it's forgiving while still delivering the dense, flavor-packed fruit bodies that make Shiitake one of the world's most prized culinary mushrooms.\u003c\/p\u003e\n\u003ch3\u003eWorking with Shiitake on Agar\u003c\/h3\u003e\n\u003cp\u003eShiitake mycelium behaves differently from oyster species on agar — and understanding this difference is the key to working with it successfully. Compared to fast-growing species like Blue or Pink Oyster:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eShiitake is \u003cstrong\u003eslower-growing on agar\u003c\/strong\u003e (typically 14–21 days to full colonization vs. 5–10 days for oysters)\u003c\/li\u003e\n\u003cli\u003eThe mycelium develops a \u003cstrong\u003echaracteristic brown pigment\u003c\/strong\u003e as it matures — this is normal and expected, not a sign of contamination\u003c\/li\u003e\n\u003cli\u003eMature plates often show \u003cstrong\u003eraised, lumpy growth\u003c\/strong\u003e called \"popcorn\" or \"primordia\" formation, which is healthy Shiitake mycelium preparing to fruit\u003c\/li\u003e\n\u003cli\u003eThe mycelium is \u003cstrong\u003edense and leathery\u003c\/strong\u003e rather than fluffy — harder to slice but very robust during transfer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis slower growth is part of why Shiitake takes longer to fruit than oysters — but the patience pays off in flavor and shelf life of the final product.\u003c\/p\u003e\n\u003ch3\u003eShatterproof Polypropylene Plates\u003c\/h3\u003e\n\u003cp\u003eEvery Shiitake plate ships in a \u003cstrong\u003e90mm polypropylene Petri dish\u003c\/strong\u003e — not the standard polystyrene used by most agar sellers. Polypropylene flexes under impact instead of cracking, which means your plate arrives intact even after rough handling in transit. This is a meaningful upgrade: a cracked plate isn't just a damaged product, it's a contamination risk, since a crack breaks the parafilm seal and exposes the culture to airborne contaminants. We chose polypropylene specifically to eliminate that problem.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e(The exception in our lineup is Lion's Mane, which uses clear polystyrene to maximize contrast against our specialty black agar.)\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Receive\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne 90mm polypropylene Petri dish\u003c\/strong\u003e, parafilm-sealed for sterility during transit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e~18mL malt extract agar (MEA)\u003c\/strong\u003e — our standard formulation for gourmet species\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully colonized\u003c\/strong\u003e with healthy Shiitake 3790 mycelium showing characteristic brown pigmentation (typically 90–100% coverage at ship time)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1st-generation isolated genetics\u003c\/strong\u003e from our master culture — the same commercial 3790 strain in our Shiitake LC syringes and grow kits\u003c\/li\u003e\n\u003cli\u003eLab-inspected for contamination before ship\u003c\/li\u003e\n\u003cli\u003eProduced fresh at Myco Labs (Illinois, USA)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to Use Your Agar Plate\u003c\/h3\u003e\n\u003cp\u003eA single colonized agar plate is one of the most versatile tools in mushroom cultivation. From one plate, you can:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransfer to grain\u003c\/strong\u003e — cut a small wedge of colonized agar and place it onto sterilized grain (rye, our 5-grain blend, etc.) to create grain spawn. Shiitake colonizes grain in 21–28 days at room temperature.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransfer directly to sawdust blocks\u003c\/strong\u003e — many experienced Shiitake growers skip grain entirely and transfer agar wedges directly to sterilized supplemented hardwood sawdust, since Shiitake fruits on wood rather than grain\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCreate liquid culture\u003c\/strong\u003e — transfer agar wedges into sterile liquid media to produce your own LC syringes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpand to more plates\u003c\/strong\u003e — divide one plate into 5–8 fresh plates to build a long-term Shiitake genetic library\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIsolate strong sectors\u003c\/strong\u003e — pick the most vigorous growth and transfer it to a fresh plate to refine your genetics over generations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNew to agar work? See our \u003ca href=\"https:\/\/www.midwestgrowkits.com\/blogs\/blog-1-growing-101-more\/how-to-use-agar-plates-for-mushroom-cultivation-2026-guide\"\u003egrain transfer tutorial\u003c\/a\u003e\u003ca href=\"\/blogs\/news\/spawn-bag-grain-jar-guide-how-to-inoculate\"\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eShiitake 3790 Growing Characteristics\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLatin name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cem\u003eLentinula edodes\u003c\/em\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStrain\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3790 — commercial gold standard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMycelium appearance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite when young, browning with age; dense, leathery, often \"popcorn\" textured\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColonization speed on agar\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eModerate — typically 14–21 days at 70–75°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePreferred grain\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRye or our 5-grain blend (for grain-to-block method)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFruiting substrate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSupplemented hardwood sawdust (preferred), hardwood pellets, oak\/sugar maple\/beech logs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBlock colonization time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2–4 months on sawdust blocks (includes browning\/maturation phase)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFruiting temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50–70°F (cooler temps produce the classic cracked-cap appearance)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCap color\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLight to dark brown; develops white radial cracks (\"hua gu\" or flower mushroom) when cool and dry\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDifficulty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIntermediate — slower than oysters but very rewarding\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUse category\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGourmet + functional (lentinan, eritadenine, vitamin D when UV-exposed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003ePlate Specifications\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePlate size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e90mm Petri dish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePlate material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene — shatterproof, flexes under impact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAgar type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard malt extract agar (MEA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAgar volume\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~18mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeal\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eParafilm M, lab-grade\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePoured and inoculated under HEPA-filtered laminar flow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSterility \u0026amp; Quality Standards\u003c\/h3\u003e\n\u003cp\u003eEvery plate is poured, inoculated, and inspected at Myco Labs under HEPA-filtered laminar flow. Plates are sealed with parafilm immediately after inoculation and incubated in a dedicated clean room until fully colonized. Each plate is visually inspected for contamination before being approved for shipment — for Shiitake specifically, our inspectors are trained to distinguish healthy mature browning from contamination, since the two can look similar to untrained eyes.\u003c\/p\u003e\n\u003ch3\u003eShipping \u0026amp; Handling\u003c\/h3\u003e\n\u003cp\u003eAll agar plates are produced ahead of time and held in inventory — they are not made-to-order. Most orders ship within \u003cstrong\u003e1 business day\u003c\/strong\u003e of being placed. Multi-item orders (especially those including grow kits, grain spawn, or other made-fresh products) may take \u003cstrong\u003e1–2 additional business days\u003c\/strong\u003e to process so we can pack everything together. Orders placed Friday afternoon, weekends, or holidays ship the next business day.\u003c\/p\u003e\n\u003cp\u003ePlates ship in insulated, padded packaging via USPS Priority Mail (typically 2–4 days in transit). In summer months (May–September) or to hot-climate destinations, we include a cold pack at no additional cost. Inspect your plate within 24 hours of arrival — minor condensation on the lid is normal and harmless. Store in a cool, dark place (55–70°F) until ready to use; an unopened, sealed plate stays viable for 60–90 days at room temperature, or 6–12 months refrigerated at 35–40°F.\u003c\/p\u003e\n\u003ch3\u003eRecommended Companion Products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/collections\/grain-spawn\"\u003eGrain Spawn Bags\u003c\/a\u003e — for transferring your colonized agar to bulk\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/spray-grow-gourmet-kits\/products\/shiitake-mushroom-grow-kit-5lbs\"\u003eShiitake All-in-One Grow Kit\u003c\/a\u003e\u003ca href=\"\/products\/shiitake-grow-kit\"\u003e\u003c\/a\u003e — for fruiting from the same strain\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/colonized-agar-plates\"\u003eBrowse All Colonized Agar Plates\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eWhat is Shiitake strain 3790 and why does it matter?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eStrain 3790 is one of the most widely cultivated commercial Shiitake genetics in the world. It was developed and refined specifically for industrial-scale cultivation on supplemented hardwood sawdust blocks, where it has become the benchmark for vigorous fruiting, dense caps, and consistent yields. Most large-scale gourmet farms running Shiitake on sawdust blocks are using 3790 or closely related strains. If you've eaten commercially grown Shiitake in the US, there's a very good chance it was strain 3790.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eMy Shiitake plate is turning brown — is it contaminated?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eProbably not. Healthy Shiitake mycelium develops a characteristic brown pigment as it matures — this is completely normal and expected. The browning often starts in patches and spreads across the plate. The mycelium may also develop raised, lumpy \"popcorn\" texture as it prepares to fruit. Both are healthy signs. True contamination on a Shiitake plate usually appears as: green or black mold spots with fuzzy texture, pink or orange bacterial sheen, or a sour\/rotten smell. When in doubt, contact us with a photo — we're happy to evaluate.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eWhy does Shiitake take so much longer than oysters?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eShiitake is a wood-decomposing fungus adapted to slow growth through dense hardwood. On agar, it colonizes in 14–21 days vs. 5–10 days for oysters. On sawdust blocks, it takes 2–4 months to colonize and reach fruiting maturity vs. 2–3 weeks for oysters. The trade-off is worth it — Shiitake produces denser, more flavorful fruit bodies with longer shelf life than fast-growing species, and the cultivation process more closely mimics the natural ecology of the species.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eHow fast do these ship compared to other agar plate sellers?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eMost orders ship within 1 business day. Compare that to other agar plate sellers (including the larger names in the industry) who make plates to order, meaning you wait 2–4 weeks after ordering for the plate to be poured, inoculated, and colonized. Ours are produced on a rolling schedule and held in inventory fully colonized, ready to ship the moment you order. Multi-item orders may take an additional 1–2 business days to process so we can pack everything together.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eWhy do you use polypropylene plates instead of polystyrene?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003ePolypropylene plates flex under impact instead of cracking. A cracked plate isn't just damaged — it's a contamination risk, since the crack breaks the parafilm seal and exposes the culture to airborne contaminants. Polypropylene eliminates that problem entirely. The plates cost us more, but the result is that your culture arrives intact and uncontaminated. (Our Lion's Mane plates are the one exception — those use clear polystyrene to maximize visual contrast against our specialty black agar.)\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eAre these the same genetics as your liquid culture syringes and grow kits?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eYes. Every Shiitake agar plate is grown from our master culture and 1st-generation isolated strain 3790 — the same commercial genetics in our LC syringes and grow kits. Lab-tested, commercial-grade, and refined over multiple generations for vigor and yield.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eCan I transfer this plate directly to a hardwood sawdust block?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eYes — many experienced Shiitake growers skip grain spawn entirely and transfer agar wedges directly to sterilized supplemented hardwood sawdust blocks. This works especially well with strain 3790, which is bred for sawdust performance. Cut several small wedges from the colonized plate and distribute them throughout the block, then seal and incubate. Colonization takes 2–4 months, with a final 2–4 week \"browning\" phase before fruiting.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eHow long will the plate stay viable?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eAn unopened, parafilm-sealed plate stored at 55–70°F in a dark place stays viable for 60–90 days. For longer storage, transfer the culture to a refrigerated plate at 35–40°F, where it can stay viable for 6–12 months. Shiitake is one of the more refrigeration-tolerant species in our lineup, making it well-suited for long-term genetic library storage.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eWhat if my plate arrives contaminated or damaged?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eWe guarantee every plate ships in clean, fully colonized condition. If you receive a contaminated or damaged plate, contact us within 5 days of delivery with a photo and we'll replace it free of charge. For Shiitake specifically, please note that mature brown pigmentation is normal and not a defect — see our FAQ above about identifying healthy Shiitake mycelium.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Myco Labs","offers":[{"title":"Default Title","offer_id":47393865695381,"sku":"AGRSH","price":15.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/colonized_agar_shiitake.jpg?v=1780140680"},{"product_id":"golden-oyster-colonized-agar-plate","title":"Golden Oyster Colonized Agar Plate","description":"\u003cdiv class=\"mgk-product-content\"\u003e\n\u003cp\u003e\u003cstrong\u003eFully colonized Golden Oyster (\u003cem\u003ePleurotus citrinopileatus\u003c\/em\u003e) agar plate\u003c\/strong\u003e, grown from our master culture and 1st-generation isolated genetics — the same vigorous strain we use in our Golden Oyster liquid culture syringes and grow kits. Each plate is produced fresh at our Illinois lab on standard malt extract agar (MEA), fully colonized before it ships, and ready to ship from inventory — usually within 1 business day.\u003c\/p\u003e\n\u003cdiv class=\"mgk-callout mgk-callout-ships\"\u003e\n\u003cstrong\u003e✓ Usually Ships Next Business Day\u003c\/strong\u003e\u003cbr\u003eUnlike most agar plate sellers who make plates to order with 2–4 week lead times, our plates are colonized and held in inventory — ready to ship from our Illinois lab. Most orders ship within 1 business day; multi-item orders may take an additional 1–2 days to process.\u003c\/div\u003e\n\u003ch3\u003eWhy Golden Oyster on Agar?\u003c\/h3\u003e\n\u003cp\u003eGolden Oyster — also known as Yellow Oyster, Chestnut Oyster, or by its Chinese name \"tamogitake\" — is one of the most visually striking gourmet mushrooms in cultivation. The mature fruit bodies form dense clusters of bright canary-yellow caps that look like a bouquet of flowers, making them one of the most photographed mushrooms in home cultivation. Beyond the looks, Golden Oyster offers:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarm-weather fruiting\u003c\/strong\u003e — like Pink Oyster, Golden Oyster fruits well in summer temperatures (65–80°F) when most oysters won't, making it ideal for warm-climate or summer-season cultivation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast colonization\u003c\/strong\u003e — aggressive mycelium that outpaces most contamination, beginner-friendly even for first-time agar workers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDistinctive flavor\u003c\/strong\u003e — described variously as nutty, cashew-like, or having a savory umami quality with a slight wine-like undertone. Cooks differently from other oysters — best in dry, high-heat preparations like roasting or pan-frying.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDense cluster yields\u003c\/strong\u003e — Golden Oyster fruits in tight bouquets rather than individual caps, which can produce impressive harvests per block\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt's also one of the few cultivated mushrooms whose appearance alone can sell it at a farmers market — the yellow color is unmistakable and stands out among the brown and white mushrooms typically on offer.\u003c\/p\u003e\n\u003ch3\u003eShatterproof Polypropylene Plates\u003c\/h3\u003e\n\u003cp\u003eEvery Golden Oyster plate ships in a \u003cstrong\u003e90mm polypropylene Petri dish\u003c\/strong\u003e — not the standard polystyrene used by most agar sellers. Polypropylene flexes under impact instead of cracking, which means your plate arrives intact even after rough handling in transit. This is a meaningful upgrade: a cracked plate isn't just a damaged product, it's a contamination risk, since a crack breaks the parafilm seal and exposes the culture to airborne contaminants. We chose polypropylene specifically to eliminate that problem.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e(The exception in our lineup is Lion's Mane, which uses clear polystyrene to maximize contrast against our specialty black agar.)\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Receive\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne 90mm polypropylene Petri dish\u003c\/strong\u003e, parafilm-sealed for sterility during transit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e~18mL malt extract agar (MEA)\u003c\/strong\u003e — our standard formulation for gourmet species\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully colonized\u003c\/strong\u003e with healthy, white-to-yellowish Golden Oyster mycelium (typically 90–100% coverage at ship time)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1st-generation isolated genetics\u003c\/strong\u003e from our master culture — the same strain in our Golden Oyster LC syringes and grow kits\u003c\/li\u003e\n\u003cli\u003eLab-inspected for contamination before ship\u003c\/li\u003e\n\u003cli\u003eProduced fresh at Myco Labs (Illinois, USA)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to Use Your Agar Plate\u003c\/h3\u003e\n\u003cp\u003eA single colonized agar plate is one of the most versatile tools in mushroom cultivation. From one plate, you can:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransfer to grain\u003c\/strong\u003e — cut a small wedge of colonized agar and place it onto sterilized grain (rye, our 5-grain blend, etc.) to create grain spawn. Golden Oyster colonizes grain in 7–12 days under warm conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCreate liquid culture\u003c\/strong\u003e — transfer agar wedges into sterile liquid media to produce your own LC syringes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpand to more plates\u003c\/strong\u003e — Golden Oyster's aggressive growth makes it ideal for dividing one plate into 8–10 fresh plates for a long-term genetic library\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIsolate strong sectors\u003c\/strong\u003e — pick the most vigorous growth and transfer it to a fresh plate to refine your genetics over generations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNew to agar work? See our \u003ca href=\"https:\/\/www.midwestgrowkits.com\/blogs\/blog-1-growing-101-more\/how-to-use-agar-plates-for-mushroom-cultivation-2026-guide\"\u003egrain transfer tutorial.\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eGolden Oyster Growing Characteristics\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLatin name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cem\u003ePleurotus citrinopileatus\u003c\/em\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommon names\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGolden Oyster, Yellow Oyster, Chestnut Oyster, Tamogitake\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMycelium appearance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite-to-yellowish, aggressive, fluffy with rhizomorphic edges\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColonization speed on agar\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFast — typically 5–8 days at 75–80°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePreferred grain\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRye, our 5-grain blend, or supplemented hardwood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFruiting substrate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStraw, hardwood sawdust, supplemented hardwood pellets, masters mix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFruiting temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e65–80°F (warm-weather fruiter — similar to Pink Oyster)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCap color\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBright canary-yellow to golden, fading to pale yellow as fruit matures\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFruiting habit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDense clusters \/ bouquets rather than individual caps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFlavor profile\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNutty, cashew-like, slightly wine-like; best in dry high-heat cooking\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShelf life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eShort — Golden Oyster has the shortest fresh shelf life of common oysters (2–4 days refrigerated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDifficulty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBeginner-friendly — among the easiest gourmet species to fruit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUse category\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGourmet (culinary) — especially valued at farmers markets for visual impact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003ePlate Specifications\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePlate size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e90mm Petri dish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePlate material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene — shatterproof, flexes under impact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAgar type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard malt extract agar (MEA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAgar volume\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~18mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeal\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eParafilm M, lab-grade\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePoured and inoculated under HEPA-filtered laminar flow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSterility \u0026amp; Quality Standards\u003c\/h3\u003e\n\u003cp\u003eEvery plate is poured, inoculated, and inspected at Myco Labs under HEPA-filtered laminar flow. Plates are sealed with parafilm immediately after inoculation and incubated in a dedicated clean room until fully colonized. Each plate is visually inspected for contamination before being approved for shipment — if it doesn't look right, it doesn't ship.\u003c\/p\u003e\n\u003ch3\u003eShipping \u0026amp; Handling\u003c\/h3\u003e\n\u003cp\u003eAll agar plates are produced ahead of time and held in inventory — they are not made-to-order. Most orders ship within \u003cstrong\u003e1 business day\u003c\/strong\u003e of being placed. Multi-item orders (especially those including grow kits, grain spawn, or other made-fresh products) may take \u003cstrong\u003e1–2 additional business days\u003c\/strong\u003e to process so we can pack everything together. Orders placed Friday afternoon, weekends, or holidays ship the next business day.\u003c\/p\u003e\n\u003cp\u003ePlates ship in insulated, padded packaging via USPS Priority Mail (typically 2–4 days in transit). In summer months (May–September) or to hot-climate destinations, we include a cold pack at no additional cost. Inspect your plate within 24 hours of arrival — minor condensation on the lid is normal and harmless. Store in a cool, dark place (55–70°F) until ready to use; an unopened, sealed plate stays viable for 60–90 days at room temperature, or 6–12 months refrigerated at 35–40°F.\u003c\/p\u003e\n\u003ch3\u003eRecommended Companion Products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/liquid-culture-syringes\/products\/golden-yellow-oyster-liquid-culture-syringe-10cc\"\u003eGolden Oyster Liquid Culture Syringe\u003c\/a\u003e\u003ca href=\"\/products\/golden-oyster-liquid-culture\"\u003e\u003c\/a\u003e — same genetics, ready-to-inject format\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/collections\/grain-spawn\"\u003eGrain Spawn Bags\u003c\/a\u003e — for transferring your colonized agar to bulk\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/colonized-agar-plates\"\u003eBrowse All Colonized Agar Plates\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eWhat's the difference between Golden Oyster, Yellow Oyster, and Chestnut Oyster?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eThey're all the same species — \u003cem\u003ePleurotus citrinopileatus\u003c\/em\u003e. \"Golden Oyster\" and \"Yellow Oyster\" are the two most common English names and are used interchangeably. \"Chestnut Oyster\" is a less common name some growers use. In Japanese cuisine, it's known as \"tamogitake.\" If you see any of these names on culture listings or in grow guides, they all refer to the same mushroom.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eHow does Golden Oyster compare to Blue Oyster and Pink Oyster?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eAll three are \u003cem\u003ePleurotus\u003c\/em\u003e species with similar cultivation requirements but distinct profiles. \u003cstrong\u003eBlue Oyster\u003c\/strong\u003e is the cold-weather specialist (45–65°F fruiting) with classic mild oyster flavor. \u003cstrong\u003ePink Oyster\u003c\/strong\u003e is warm-weather (65–80°F) with a bacon-like flavor when crisped. \u003cstrong\u003eGolden Oyster\u003c\/strong\u003e is also warm-weather (65–80°F) with a nutty, cashew-like flavor and the most visually striking appearance — bright yellow clusters that command premium prices at farmers markets. If you're picking one for summer cultivation, choose between Pink and Golden based on flavor preference. If you want to grow year-round across a wide temperature range, all three together give you complete seasonal coverage.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eIs Golden Oyster a good species for selling at farmers markets?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eYes — Golden Oyster is one of the most market-friendly gourmet mushrooms. The bright yellow color makes it visually distinct from the brown and white mushrooms typically on display, which dramatically increases shopper attention. The dense cluster fruiting habit means each \"bouquet\" looks substantial and photogenic. The main caveat is shelf life: Golden Oyster has the shortest fresh shelf life of common gourmet species (2–4 days refrigerated), so it's best sold within 24–48 hours of harvest. Many small farmers harvest Friday morning for Saturday market.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eHow fast do these ship compared to other agar plate sellers?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eMost orders ship within 1 business day. Compare that to other agar plate sellers (including the larger names in the industry) who make plates to order, meaning you wait 2–4 weeks after ordering for the plate to be poured, inoculated, and colonized. Ours are produced on a rolling schedule and held in inventory fully colonized, ready to ship the moment you order. Multi-item orders may take an additional 1–2 business days to process so we can pack everything together.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eWhy do you use polypropylene plates instead of polystyrene?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003ePolypropylene plates flex under impact instead of cracking. A cracked plate isn't just damaged — it's a contamination risk, since the crack breaks the parafilm seal and exposes the culture to airborne contaminants. Polypropylene eliminates that problem entirely. The plates cost us more, but the result is that your culture arrives intact and uncontaminated. (Our Lion's Mane plates are the one exception — those use clear polystyrene to maximize visual contrast against our specialty black agar.)\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eAre these the same genetics as your liquid culture syringes and grow kits?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eYes. Every agar plate is grown from our master culture and 1st-generation isolated Golden Oyster strain — the same genetics in our LC syringes and grow kits. Lab-tested, commercial-grade, and refined over multiple generations for vigor and yield.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eHow long will the plate stay viable?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eAn unopened, parafilm-sealed plate stored at 55–70°F in a dark place stays viable for 60–90 days. For longer storage, transfer the culture to a refrigerated plate at 35–40°F, where it can stay viable for 6–12 months. \u003cem\u003eNote: like Pink Oyster, Golden Oyster is somewhat more sensitive to cold than Blue Oyster — extended refrigeration can slow recovery time. If you're storing long-term, consider keeping plates at the warmer end (40°F) and refreshing every 4–6 months.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eCan I use this plate to make grain spawn directly?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eYes — that's one of the most common uses. Under a still-air box or laminar flow hood, cut a small wedge (about the size of a pencil eraser) from the colonized plate and drop it into a sterilized grain spawn bag or jar. Golden Oyster typically colonizes grain in 7–12 days at room temperature — one of the fastest gourmet species, similar to Pink Oyster.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eHow should I cook Golden Oyster mushrooms?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eGolden Oyster cooks differently from other oysters — it benefits from dry, high-heat preparations rather than the moist sauté most oysters prefer. The cell walls hold less water, so when seared or roasted, they develop a crisp exterior and concentrate the nutty, cashew-like flavor. Recommended methods: pan-fry in a hot dry skillet until edges crisp; roast at 425°F until golden; or briefly stir-fry with high heat. Avoid long simmering or braising, which makes the texture mushy and dilutes the distinctive flavor.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eWhat if my plate arrives contaminated or damaged?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eWe guarantee every plate ships in clean, fully colonized condition. If you receive a contaminated or damaged plate, contact us within 5 days of delivery with a photo and we'll replace it free of charge.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Myco Labs","offers":[{"title":"Default Title","offer_id":47393884897429,"sku":"AGRYL","price":20.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/golden_oyster_agar_mushroom.jpg?v=1780141816"},{"product_id":"maitake-hen-of-the-woods-colonized-agar-plate","title":"Maitake Hen of the Woods Colonized Agar Plate","description":"\u003cdiv class=\"mgk-product-content\"\u003e\n\u003cp\u003e\u003cstrong\u003eFully colonized Maitake (\u003cem\u003eGrifola frondosa\u003c\/em\u003e) agar plate\u003c\/strong\u003e, grown from our master culture and 1st-generation isolated genetics — the same strain we use in our Maitake liquid culture syringes and grow kits. Each plate is produced fresh at our Illinois lab on standard malt extract agar (MEA), fully colonized before it ships, and ready to ship from inventory — usually within 1 business day.\u003c\/p\u003e\n\u003cdiv class=\"mgk-callout mgk-callout-ships\"\u003e\n\u003cstrong\u003e✓ Usually Ships Next Business Day\u003c\/strong\u003e\u003cbr\u003eUnlike most agar plate sellers who make plates to order with 2–4 week lead times, our plates are colonized and held in inventory — ready to ship from our Illinois lab. Most orders ship within 1 business day; multi-item orders may take an additional 1–2 days to process.\u003c\/div\u003e\n\u003ch3\u003eWhy Maitake?\u003c\/h3\u003e\n\u003cp\u003eMaitake — known in English as \u003cstrong\u003eHen of the Woods\u003c\/strong\u003e and in Japanese as the \"dancing mushroom\" — is one of the most prized mushrooms in the world, valued both as a premier culinary species and as a cornerstone of traditional functional mushroom practice. The name \"maitake\" (舞茸) literally means \"dancing mushroom\" in Japanese, said to come from foragers historically dancing with joy upon discovering the rare and valuable rosettes growing at the base of oak trees.\u003c\/p\u003e\n\u003cp\u003eAs a culinary mushroom, Maitake offers what many cooks consider the best flavor and texture of any cultivated species — rich, earthy, slightly peppery, with frilly cap edges that crisp beautifully when seared. It commands premium prices at gourmet markets (often $20–$40 per pound fresh) precisely because it's difficult to cultivate at scale and produces stunning rosette clusters that double as visual showpieces.\u003c\/p\u003e\n\u003cp\u003eAs a functional mushroom, Maitake has a long history of use in traditional preparations and is notable for its beta-glucan content (particularly the D-fraction polysaccharide complex). It's one of the four most-studied functional mushrooms alongside Reishi, Shiitake, and Turkey Tail.\u003c\/p\u003e\n\u003ch3\u003eThe Cultivation Challenge — And the Reward\u003c\/h3\u003e\n\u003cp\u003eMaitake is one of the more demanding species to cultivate, which is precisely why fresh Maitake commands such high prices in gourmet markets. The mycelium grows more slowly than most cultivated species and requires careful attention to temperature, substrate, and timing. Successful cultivation generally requires:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePatience\u003c\/strong\u003e — Maitake colonizes hardwood blocks in 3–4 months, considerably longer than oysters (2–3 weeks) or even Shiitake (2–4 months)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupplemented hardwood substrate\u003c\/strong\u003e — oak sawdust is the traditional choice; supplementation with wheat bran or soybean hulls is essential for good fruiting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooler fruiting temperatures\u003c\/strong\u003e (55–65°F) and seasonal cold shock to trigger primordia formation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh biological efficiency\u003c\/strong\u003e when done right — well-managed Maitake blocks can produce 4–8 lb rosettes from single fruiting events\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor cultivators willing to commit to the longer timeline, Maitake is one of the most satisfying species to grow. The mature rosettes are unmistakable — overlapping gray-brown fronds in dense clusters that can weigh several pounds — and the market value of fresh Maitake makes it one of the most profitable mushrooms per square foot of fruiting space for small commercial operations.\u003c\/p\u003e\n\u003ch3\u003eWorking with Maitake on Agar\u003c\/h3\u003e\n\u003cp\u003eMaitake mycelium has some distinctive characteristics on agar:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSlow growth\u003c\/strong\u003e — typically 21–28 days to full colonization at 70–75°F, slower than most species in our lineup\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhite, dense, slightly stringy\u003c\/strong\u003e texture with rhizomorphic patterns developing over time\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSometimes develops a yellow-tan tint\u003c\/strong\u003e at maturity, especially toward the edges — this is healthy mature mycelium, not contamination\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLess aggressive\u003c\/strong\u003e than oyster species — extra care with sterile technique is important since the mycelium doesn't outpace contamination the way fast-growing species do\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is a species that rewards careful, patient cultivators. Beginners can succeed with Maitake, but it's not the species we'd suggest starting with — Blue Oyster or Pink Oyster are more forgiving first projects. By the time you've successfully grown a few oyster cycles, you'll have the technique and patience to tackle Maitake.\u003c\/p\u003e\n\u003ch3\u003eShatterproof Polypropylene Plates\u003c\/h3\u003e\n\u003cp\u003eEvery Maitake plate ships in a \u003cstrong\u003e90mm polypropylene Petri dish\u003c\/strong\u003e — not the standard polystyrene used by most agar sellers. Polypropylene flexes under impact instead of cracking, which means your plate arrives intact even after rough handling in transit. This is a meaningful upgrade: a cracked plate isn't just a damaged product, it's a contamination risk, since a crack breaks the parafilm seal and exposes the culture to airborne contaminants. We chose polypropylene specifically to eliminate that problem.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e(The exception in our lineup is Lion's Mane, which uses clear polystyrene to maximize contrast against our specialty black agar.)\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Receive\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne 90mm polypropylene Petri dish\u003c\/strong\u003e, parafilm-sealed for sterility during transit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e~18mL malt extract agar (MEA)\u003c\/strong\u003e — our standard formulation for gourmet and functional species\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully colonized\u003c\/strong\u003e with healthy Maitake mycelium (typically 90–100% coverage at ship time)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1st-generation isolated genetics\u003c\/strong\u003e from our master culture — the same strain in our Maitake LC syringes and grow kits\u003c\/li\u003e\n\u003cli\u003eLab-inspected for contamination before ship\u003c\/li\u003e\n\u003cli\u003eProduced fresh at Myco Labs (Illinois, USA)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to Use Your Agar Plate\u003c\/h3\u003e\n\u003cp\u003eA single colonized agar plate is one of the most versatile tools in mushroom cultivation. From one Maitake plate, you can:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransfer to grain\u003c\/strong\u003e — cut a small wedge of colonized agar and place it onto sterilized grain (rye, our 5-grain blend) to create grain spawn. Maitake colonizes grain in 28–42 days at room temperature.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransfer directly to supplemented hardwood blocks\u003c\/strong\u003e — many experienced Maitake growers skip grain entirely and inoculate sterilized oak sawdust blocks directly from agar wedges, since Maitake fruits exclusively on wood\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCreate liquid culture\u003c\/strong\u003e — transfer agar wedges into sterile liquid media to produce your own LC syringes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpand to more plates\u003c\/strong\u003e — divide one plate into 4–6 fresh plates to build a long-term Maitake genetic library\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIsolate strong sectors\u003c\/strong\u003e — pick the most vigorous growth and transfer it to a fresh plate to refine your genetics over generations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNew to agar work? See our \u003ca href=\"https:\/\/www.midwestgrowkits.com\/blogs\/blog-1-growing-101-more\/how-to-use-agar-plates-for-mushroom-cultivation-2026-guide\"\u003egrain transfer tutorial.\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eMaitake Growing Characteristics\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLatin name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cem\u003eGrifola frondosa\u003c\/em\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommon names\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMaitake, Hen of the Woods, Dancing Mushroom, Ram's Head, Sheep's Head\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMycelium appearance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite to slightly yellow-tan, dense, slightly stringy with rhizomorphic patterns\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColonization speed on agar\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSlow — typically 21–28 days at 70–75°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePreferred grain\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRye or our 5-grain blend\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFruiting substrate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSupplemented oak sawdust (preferred), other hardwoods (maple, beech), oak logs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBlock colonization time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3–4 months on supplemented hardwood blocks before fruiting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFruiting temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e55–65°F (cool-weather fruiter; requires cold shock to trigger primordia)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFruit body appearance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLarge rosettes of overlapping gray-brown fronds with white-to-tan undersides; clusters can reach 4–8 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFlavor profile\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRich, earthy, slightly peppery; one of the most prized culinary mushrooms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDifficulty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIntermediate-to-advanced — slower and more demanding than oysters or Shiitake\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUse category\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGourmet (culinary premium) + functional (beta-glucan \/ D-fraction tradition)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003ePlate Specifications\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePlate size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e90mm Petri dish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePlate material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene — shatterproof, flexes under impact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAgar type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard malt extract agar (MEA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAgar volume\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~18mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeal\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eParafilm M, lab-grade\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePoured and inoculated under HEPA-filtered laminar flow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSterility \u0026amp; Quality Standards\u003c\/h3\u003e\n\u003cp\u003eEvery plate is poured, inoculated, and inspected at Myco Labs under HEPA-filtered laminar flow. Plates are sealed with parafilm immediately after inoculation and incubated in a dedicated clean room until fully colonized. Each plate is visually inspected for contamination before being approved for shipment — for Maitake specifically, our inspectors are trained to distinguish healthy yellow-tan mature mycelium from contamination, since the two can look similar to untrained eyes.\u003c\/p\u003e\n\u003ch3\u003eShipping \u0026amp; Handling\u003c\/h3\u003e\n\u003cp\u003eAll agar plates are produced ahead of time and held in inventory — they are not made-to-order. Most orders ship within \u003cstrong\u003e1 business day\u003c\/strong\u003e of being placed. Multi-item orders (especially those including grow kits, grain spawn, or other made-fresh products) may take \u003cstrong\u003e1–2 additional business days\u003c\/strong\u003e to process so we can pack everything together. Orders placed Friday afternoon, weekends, or holidays ship the next business day.\u003c\/p\u003e\n\u003cp\u003ePlates ship in insulated, padded packaging via USPS Priority Mail (typically 2–4 days in transit). In summer months (May–September) or to hot-climate destinations, we include a cold pack at no additional cost. Inspect your plate within 24 hours of arrival — minor condensation on the lid is normal and harmless. Store in a cool, dark place (55–70°F) until ready to use; an unopened, sealed plate stays viable for 60–90 days at room temperature, or 6–12 months refrigerated at 35–40°F.\u003c\/p\u003e\n\u003ch3\u003eRecommended Companion Products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/liquid-culture-syringes\/products\/maitake-hen-of-the-woods-liquid-culture-syringe-10cc\"\u003eMaitake Liquid Culture Syringe\u003c\/a\u003e\u003ca href=\"\/products\/maitake-liquid-culture\"\u003e\u003c\/a\u003e — same genetics, ready-to-inject format\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/collections\/grain-spawn\"\u003eGrain Spawn Bags\u003c\/a\u003e — for transferring your colonized agar to bulk\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/maitake-grow-kit\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/spray-grow-gourmet-kits\/products\/maitake-hen-of-the-woods-mushroom-grow-kit-5lbs\"\u003eMaitake All-in-One Grow Kit\u003c\/a\u003e — for fruiting from the same strain\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/colonized-agar-plates\"\u003eBrowse All Colonized Agar Plates\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eWhat's the difference between Maitake, Hen of the Woods, and Grifola frondosa?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eThey're all the same mushroom — \u003cem\u003eGrifola frondosa\u003c\/em\u003e. \"Maitake\" is the Japanese name (and the most common name in international cultivation and herbal markets), \"Hen of the Woods\" is the English common name (especially in North America where it grows wild), and you'll also occasionally see \"Ram's Head\" or \"Sheep's Head\" — older folk names. In Japanese, \"maitake\" means \"dancing mushroom,\" reportedly because traditional foragers would dance with joy upon discovering the rare and valuable rosettes at the base of oak trees.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eIs Maitake difficult to grow at home?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eYes — Maitake is one of the more demanding species in cultivation. It grows more slowly than oysters or Shiitake (3–4 months on hardwood blocks vs. 2–4 weeks for oysters), requires supplemented hardwood substrate (oak preferred), and needs cool fruiting temperatures with seasonal cold shock to trigger primordia formation. We don't recommend Maitake as a first cultivation project — Blue Oyster or Pink Oyster are far more forgiving for beginners. Once you've completed a few successful oyster cycles, you'll have the technique and patience to tackle Maitake successfully.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eWhy is fresh Maitake so expensive at the market?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eThree reasons combine to make Maitake a premium-priced mushroom: (1) the long cultivation cycle ties up production space for 3–4 months per harvest vs. 3–4 weeks for oysters, (2) Maitake requires specialized substrate (supplemented hardwood) and fruiting conditions that not all farms are equipped for, and (3) it's one of the most culinarily prized mushrooms in the world, so demand consistently outpaces supply. Fresh Maitake regularly sells for $20–$40 per pound at gourmet markets, and dried Maitake can fetch significantly more. For small commercial growers, this makes Maitake one of the most profitable species per square foot of fruiting space — despite the longer timeline.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eHow fast do these ship compared to other agar plate sellers?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eMost orders ship within 1 business day. Compare that to other agar plate sellers (including the larger names in the industry) who make plates to order, meaning you wait 2–4 weeks after ordering for the plate to be poured, inoculated, and colonized. Ours are produced on a rolling schedule and held in inventory fully colonized, ready to ship the moment you order. Multi-item orders may take an additional 1–2 business days to process so we can pack everything together.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eWhy do you use polypropylene plates instead of polystyrene?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003ePolypropylene plates flex under impact instead of cracking. A cracked plate isn't just damaged — it's a contamination risk, since the crack breaks the parafilm seal and exposes the culture to airborne contaminants. Polypropylene eliminates that problem entirely. The plates cost us more, but the result is that your culture arrives intact and uncontaminated. (Our Lion's Mane plates are the one exception — those use clear polystyrene to maximize visual contrast against our specialty black agar.)\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eAre these the same genetics as your liquid culture syringes and grow kits?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eYes. Every Maitake agar plate is grown from our master culture and 1st-generation isolated \u003cem\u003eGrifola frondosa\u003c\/em\u003e strain — the same genetics in our LC syringes and grow kits. Lab-tested, commercial-grade, and refined over multiple generations for vigor and yield.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eMy Maitake plate is developing yellow-tan patches — is it contaminated?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eProbably not. Healthy Maitake mycelium often develops a yellow-tan tint as it matures, particularly toward the edges of the plate. This is normal pigmentation, similar to (though less dramatic than) the browning seen in mature Shiitake. True contamination on Maitake plates typically appears as: green or black mold with fuzzy texture, pink or orange bacterial sheen with sour smell, or wet slimy patches that spread rapidly. If you're unsure, contact us with a photo and we're happy to evaluate.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eCan I transfer this plate directly to a hardwood sawdust block?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eYes — many experienced Maitake growers skip grain spawn entirely and transfer agar wedges directly to sterilized supplemented oak sawdust blocks. Maitake fruits exclusively on wood, so direct-to-block transfer can be more efficient. Cut several small wedges from the colonized plate and distribute them throughout the block, then seal and incubate. Colonization takes 3–4 months total, with the final 2–4 weeks being the \"pinning\" phase where primordia form before fruiting begins.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eHow do I cook Maitake mushrooms?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eMaitake has some of the best flavor and texture of any cultivated mushroom and rewards simple preparations. The frilly cap edges crisp beautifully when seared in butter or oil over medium-high heat — this is the classic restaurant preparation. Other excellent methods: roasting at 425°F until the edges are crispy and the centers tender; tearing into bite-sized pieces and stir-frying briefly; or grilling whole clusters with olive oil and salt. Avoid long simmering, which softens the texture and dilutes the rich flavor. Maitake also dries exceptionally well — dried Maitake rehydrates with concentrated flavor and is excellent in soups, stocks, and risottos.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eHow long will the plate stay viable?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eAn unopened, parafilm-sealed plate stored at 55–70°F in a dark place stays viable for 60–90 days. For longer storage, transfer the culture to a refrigerated plate at 35–40°F, where it can stay viable for 6–12 months. Maitake tolerates refrigeration well, making it suitable for long-term genetic library storage.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cstrong\u003eWhat if my plate arrives contaminated or damaged?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eWe guarantee every plate ships in clean, fully colonized condition. If you receive a contaminated or damaged plate, contact us within 5 days of delivery with a photo and we'll replace it free of charge. For Maitake specifically, please note that yellow-tan mycelial pigmentation is normal mature growth and not a defect — see our FAQ above about identifying healthy Maitake mycelium.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Myco Labs","offers":[{"title":"Default Title","offer_id":47393899446421,"sku":"AGRMT","price":20.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Maitake_mushroom_agar.jpg?v=1780142569"},{"product_id":"lions-mane-colonized-grain-spawn-bag-5-lb","title":"Lion's Mane Colonized Grain Spawn Bag 5 LB","description":"\u003cstyle\u003e.mgk-product-content .b { font-weight:600 !important; }\u003c\/style\u003e\n\u003cdiv class=\"mgk-product-content\"\u003e\n\u003cp\u003e\u003cspan class=\"b\"\u003eFully colonized Lion's Mane (\u003cem\u003eHericium erinaceus\u003c\/em\u003e) grain spawn, 5 LB\u003c\/span\u003e, grown on our millet-based grain blend in a filtered Unicorn 3T bag. Built on premium first-generation genetics and produced fresh at our Illinois lab — fully colonized before it ships and ready to break up and inoculate the moment it arrives. Lion's Mane is one of the most sought-after gourmet and functional varieties, prized for its delicate seafood-like flavor and its reputation for supporting cognitive health.\u003c\/p\u003e\n\u003cdiv class=\"mgk-callout mgk-callout-ships\"\u003e\n\u003cspan class=\"b\"\u003e✓ Made Fresh — Ships Same or Next Business Day\u003c\/span\u003e\u003cbr\u003eWe don't stockpile spawn on a shelf for months. Bags are produced on a rolling schedule and held fully colonized, then shipped fresh. \u003c\/div\u003e\n\u003cdiv class=\"mgk-callout mgk-callout-ships\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch3\u003ePremium Genetics, Sourced Worldwide\u003c\/h3\u003e\n\u003cp\u003eStrong genetics are the difference between a reliable commercial run and a disappointing one — so we built our library from the best sources we could find. Our Lion's Mane spawn starts with our own in-house master culture collection at Myco Labs, refined over years of isolation work, and is expanded through a partnership with \u003cspan class=\"b\"\u003eone of the largest commercial culture suppliers in Canada\u003c\/span\u003e, along with select strains sourced from the \u003cspan class=\"b\"\u003eUK and Asia\u003c\/span\u003e. Every culture is held as first-generation commercial genetics and selected for vigorous, clean colonization and true-to-type fruiting. This is the genetic foundation serious cultivators build a farm on.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Receive\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003e5 LB of fully colonized grain spawn\u003c\/span\u003e — premium first-gen Lion's Mane (bags are filled generously and typically weigh in above 5 LB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eMillet-based grain blend\u003c\/span\u003e — primarily white and red millet with a small amount of milo; the fine grain gives plenty of inoculation points for fast, even colonization\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003e3T Spawn bag\u003c\/span\u003e with a 0.22-micron filter patch and self-healing injection port\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003e3-mil construction\u003c\/span\u003e, sterilized in a 3-hour autoclave cycle\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eLab-inspected\u003c\/span\u003e for contamination and produced fresh at Myco Labs (Illinois, USA)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to Use Your Grain Spawn\u003c\/h3\u003e\n\u003cp\u003eThese bags are made to be broken up and mixed directly into sterilized bulk substrate. The most popular method is Master's Mix block production:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eMix into Master's Mix\u003c\/span\u003e — break up the colonized grain and combine it with our \u003ca href=\"https:\/\/www.midwestgrowkits.com\/products\/sterilized-masters-mix-bag-5-lbs\"\u003e5 LB Sterilized Master's Mix\u003c\/a\u003e. One 5 LB bag inoculates 12–13 Master's Mix bags. Step-by-step walkthrough here: \u003ca href=\"https:\/\/www.midwestgrowkits.com\/blogs\/blog-1-growing-101-more\/how-to-use-grain-spawn-with-master-s-mix-substrate\"\u003eHow to Use Grain Spawn with Master's Mix Substrate\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eExpand to more grain\u003c\/span\u003e — use a portion to inoculate additional sterilized grain (a grain-to-grain transfer) and multiply your spawn before spawning to bulk\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eSpawn a monotub or bulk bed\u003c\/span\u003e — mix into any properly prepared pasteurized or sterilized bulk substrate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor grain-to-grain transfers or any open work, do it in front of a \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003elaminar flow hood or clean-room setup\u003c\/a\u003e. A few minutes under HEPA-filtered air keeps contamination out and dramatically improves your success rate — especially when you're expanding spawn rather than going straight to a sealed Master's Mix bag.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/www.midwestgrowkits.com\/blogs\/blog-1-growing-101-more\/how-to-use-grain-spawn-with-master-s-mix-substrate\" style=\"display:block; margin:24px 0; text-align:center;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/How_to_use_Grain_Spawn_Link_final.jpg?v=1781605812\" alt=\"How to use colonized grain spawn with Master's Mix - step-by-step guide\" style=\"max-width:100%; height:auto; border-radius:6px;\" loading=\"lazy\"\u003e\n\u003c\/a\u003e\n\u003ch3\u003eLion's Mane Growing Characteristics\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eLatin name\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cem\u003eHericium erinaceus\u003c\/em\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eMycelium appearance\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite, cottony, coral-like rhizomorphic growth. Ships bright white, usually arrives with white specs on grain. \u003cstrong\u003eBreaks up easily in transit but can be used immediately. Normal for Lion's Mane.\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSpawn-to-substrate ratio\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e~1 part spawn to 3 parts substrate (one 5 LB bag → 12–13 Master's Mix bags)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003ePreferred substrate\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eMaster's Mix, hardwood sawdust + bran, supplemented hardwood pellets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eFruiting temperature\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e60–70°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eDifficulty\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eBeginner-friendly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eUse category\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eGourmet + functional (nootropic compounds)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eGrain Spawn Specifications\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eNet weight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e5 LB advertised (typically fills to ~5.5 LB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eGrain\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003ePrimarily white and red millet with a small amount of milo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eBag\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e3T, 3-mil, 0.22-micron filter patch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eInjection port\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSterilization\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e3-hour autoclave cycle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSterility\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eProduced under HEPA-filtered laminar flow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eShelf life\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e90 days best \/ 120 days refrigerated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSterility \u0026amp; Quality Standards\u003c\/h3\u003e\n\u003cp\u003eEvery bag is produced and inspected at Myco Labs under HEPA-filtered laminar flow, then incubated in a dedicated clean room until fully colonized. Each bag is visually inspected for contamination before it's approved for shipment. If it doesn't look right, it doesn't ship.\u003c\/p\u003e\n\u003ch3\u003eShipping \u0026amp; Handling\u003c\/h3\u003e\n\u003cp\u003eSpawn ships in padded packaging. In summer months (May–September) or to hot-climate destinations, we include a cold pack at no additional cost. Use your spawn promptly for best results; an unopened bag stays at peak viability for about 90 days at room temperature, or up to 120 days refrigerated at 35–40°F. Refrigerate if you're not using it right away.\u003c\/p\u003e\n\u003ch3\u003eRecommended Companion Products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/products\/sterilized-masters-mix-bag-5-lbs\"\u003eSterilized Master's Mix (5 LB)\u003c\/a\u003e — the intended pairing; one spawn bag inoculates 12–13\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003eLaminar Flow Hoods \u0026amp; Clean Room Equipment\u003c\/a\u003e — for contamination-free grain transfers\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/liquid-culture-syringes\/products\/lions-mane-liquid-culture-syringe-10cc\"\u003eLion's Mane Liquid Culture Syringe\u003c\/a\u003e — same genetics, ready-to-inject format\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/spawn-bags\"\u003eUninoculated Spawn Bags\u003c\/a\u003e — to colonize your own grain from culture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eIs this ready to use, or do I need to colonize it?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eIt's fully colonized and ready to go. Break it up and mix it directly into sterilized Master's Mix or your bulk substrate of choice — no inoculation, sterilization, or colonization wait on your end.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eHow many Master's Mix blocks will one 5 LB bag inoculate?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eOne 5 LB bag inoculates 12–13 of our 5 LB Sterilized Master's Mix bags at our recommended ratio, turning a single spawn bag into a full block run.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eDo I need a flow hood to use this?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eNot for the simplest workflow — breaking the spawn into a freshly opened Master's Mix bag in a clean, still space works for many growers. But for grain-to-grain transfers or any extended open work, a laminar flow hood or clean-room setup with HEPA-filtered air significantly lowers contamination risk. We carry both in our \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003eflow hood and clean room collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eWhere do your genetics come from?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eOur cultures come from our own in-house master collection at Myco Labs, plus a partnership with one of the largest commercial culture suppliers in Canada and select strains sourced from the UK and Asia. Everything is maintained as first-generation commercial genetics and selected for vigor and true-to-type fruiting.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eHow fresh is it, and how long will it stay viable?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eEvery bag is made fresh at our Illinois lab — never stockpiled for months. An unopened bag stays at peak viability for about 90 days at room temperature, or up to 120 days refrigerated. Refrigerate if you're not using it right away.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eCan I use this in a monotub instead of Master's Mix blocks?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eYes. While these are built for breaking up into sterilized Master's Mix, the colonized grain can be mixed into any properly prepared bulk substrate, including a monotub.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eWhat if my bag arrives contaminated or damaged?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eWe guarantee every bag ships fully colonized and contamination-free. If you receive a contaminated or damaged bag, contact us within 5 days of delivery with a photo and we'll replace it free of charge.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Midwest Grow Kits","offers":[{"title":"Default Title","offer_id":47405735674005,"sku":"LMGS","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Grain_spawn_lion_2.jpg?v=1780511645"},{"product_id":"blue-oyster-colonized-grain-spawn-bag-5-lb","title":"Blue Oyster Colonized Grain Spawn Bag 5 LB","description":"\u003cstyle\u003e.mgk-product-content .b { font-weight:600 !important; }\u003c\/style\u003e\n\u003cdiv class=\"mgk-product-content\"\u003e\n\u003cp\u003e\u003cspan class=\"b\"\u003eFully colonized Blue Oyster (\u003cem\u003ePleurotus ostreatus\u003c\/em\u003e) grain spawn, 5 LB\u003c\/span\u003e, grown on our millet-based grain blend in a filtered Unicorn 3T bag. Built on premium first-generation genetics and produced fresh at our Illinois lab — fully colonized before it ships and ready to break up and inoculate the moment it arrives. Blue Oyster is one of the fastest, most aggressive colonizers you can grow, with striking blue-grey caps that lighten to silvery tan as they fruit — forgiving, high-yielding, and a favorite of commercial growers and first-timers alike.\u003c\/p\u003e\n\u003cdiv class=\"mgk-callout mgk-callout-ships\"\u003e\n\u003cspan class=\"b\"\u003e✓ Made Fresh — Ships Same or Next Business Day\u003c\/span\u003e\u003cbr\u003eWe don't stockpile spawn on a shelf for months. Bags are produced on a rolling schedule and held fully colonized, then shipped fresh. \u003c\/div\u003e\n\u003cdiv class=\"mgk-callout mgk-callout-ships\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch3\u003ePremium Genetics, Sourced Worldwide\u003c\/h3\u003e\n\u003cp\u003eStrong genetics are the difference between a reliable commercial run and a disappointing one — so we built our library from the best sources we could find. Our Blue Oyster spawn starts with our own in-house master culture collection at Myco Labs, refined over years of isolation work, and is expanded through a partnership with \u003cspan class=\"b\"\u003eone of the largest commercial culture suppliers in Canada\u003c\/span\u003e, along with select strains sourced from the \u003cspan class=\"b\"\u003eUK and Asia\u003c\/span\u003e. Every culture is held as first-generation commercial genetics and selected for vigorous, clean colonization and true-to-type fruiting. This is the genetic foundation serious cultivators build a farm on.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Receive\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003e5 LB of fully colonized grain spawn\u003c\/span\u003e — premium first-gen Blue Oyster (bags are filled generously and typically weigh in above 5 LB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eMillet-based grain blend\u003c\/span\u003e — primarily white and red millet with a small amount of milo; the fine grain gives plenty of inoculation points for fast, even colonization\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003e3T Spawn bag\u003c\/span\u003e with a 0.22-micron filter patch and self-healing injection port\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003e3-mil construction\u003c\/span\u003e, sterilized in a 3-hour autoclave cycle\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eLab-inspected\u003c\/span\u003e for contamination and produced fresh at Myco Labs (Illinois, USA)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to Use Your Grain Spawn\u003c\/h3\u003e\n\u003cp\u003eThese bags are made to be broken up and mixed directly into sterilized bulk substrate. The most popular method is Master's Mix block production:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eMix into Master's Mix\u003c\/span\u003e — break up the colonized grain and combine it with our \u003ca href=\"https:\/\/www.midwestgrowkits.com\/products\/sterilized-masters-mix-bag-5-lbs\"\u003e5 LB Sterilized Master's Mix\u003c\/a\u003e. One 5 LB bag inoculates 12–13 Master's Mix bags. Step-by-step walkthrough here: \u003ca href=\"https:\/\/www.midwestgrowkits.com\/blogs\/blog-1-growing-101-more\/how-to-use-grain-spawn-with-master-s-mix-substrate\"\u003eHow to Use Grain Spawn with Master's Mix Substrate\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eExpand to more grain\u003c\/span\u003e — use a portion to inoculate additional sterilized grain (a grain-to-grain transfer) and multiply your spawn before spawning to bulk\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eSpawn a monotub or bulk bed\u003c\/span\u003e — mix into any properly prepared pasteurized or sterilized bulk substrate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor grain-to-grain transfers or any open work, do it in front of a \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003elaminar flow hood or clean-room setup\u003c\/a\u003e. A few minutes under HEPA-filtered air keeps contamination out and dramatically improves your success rate — especially when you're expanding spawn rather than going straight to a sealed Master's Mix bag.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/www.midwestgrowkits.com\/blogs\/blog-1-growing-101-more\/how-to-use-grain-spawn-with-master-s-mix-substrate\" style=\"display:block; margin:24px 0; text-align:center;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/How_to_use_Grain_Spawn_Link_final.jpg?v=1781605812\" alt=\"How to use colonized grain spawn with Master's Mix - step-by-step guide\" style=\"max-width:100%; height:auto; border-radius:6px;\" loading=\"lazy\"\u003e\n\u003c\/a\u003e\n\u003ch3\u003eBlue Oyster Growing Characteristics\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eLatin name\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cem\u003ePleurotus ostreatus\u003c\/em\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eMycelium appearance\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite, fast, aggressive rhizomorphic growth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSpawn-to-substrate ratio\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e~1 part spawn to 3 parts substrate (one 5 LB bag → 12–13 Master's Mix bags)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003ePreferred substrate\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eMaster's Mix, hardwood sawdust + bran, straw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eFruiting temperature\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e55–65°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eDifficulty\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eBeginner-friendly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eUse category\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eGourmet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eGrain Spawn Specifications\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eNet weight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e5 LB advertised (typically fills to ~5.5 LB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eGrain\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003ePrimarily white and red millet with a small amount of milo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eBag\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e3T, 3-mil, 0.22-micron filter patch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eInjection port\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSterilization\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e3-hour autoclave cycle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSterility\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eProduced under HEPA-filtered laminar flow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eShelf life\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e90 days best \/ 120 days refrigerated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSterility \u0026amp; Quality Standards\u003c\/h3\u003e\n\u003cp\u003eEvery bag is produced and inspected at Myco Labs under HEPA-filtered laminar flow, then incubated in a dedicated clean room until fully colonized. Each bag is visually inspected for contamination before it's approved for shipment. If it doesn't look right, it doesn't ship.\u003c\/p\u003e\n\u003ch3\u003eShipping \u0026amp; Handling\u003c\/h3\u003e\n\u003cp\u003eSpawn ships in padded packaging. In summer months (May–September) or to hot-climate destinations, we include a cold pack at no additional cost. Use your spawn promptly for best results; an unopened bag stays at peak viability for about 90 days at room temperature, or up to 120 days refrigerated at 35–40°F. Refrigerate if you're not using it right away.\u003c\/p\u003e\n\u003ch3\u003eRecommended Companion Products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/products\/sterilized-masters-mix-bag-5-lbs\"\u003eSterilized Master's Mix (5 LB)\u003c\/a\u003e — the intended pairing; one spawn bag inoculates 12–13\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003eLaminar Flow Hoods \u0026amp; Clean Room Equipment\u003c\/a\u003e — for contamination-free grain transfers\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/liquid-culture-syringes\"\u003eLiquid Culture Syringes\u003c\/a\u003e — same genetics, ready-to-inject format\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/spawn-bags\"\u003eUninoculated Spawn Bags\u003c\/a\u003e — to colonize your own grain from culture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eIs this ready to use, or do I need to colonize it?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eIt's fully colonized and ready to go. Break it up and mix it directly into sterilized Master's Mix or your bulk substrate of choice — no inoculation, sterilization, or colonization wait on your end.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eHow many Master's Mix blocks will one 5 LB bag inoculate?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eOne 5 LB bag inoculates 12–13 of our 5 LB Sterilized Master's Mix bags at our recommended ratio, turning a single spawn bag into a full block run.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eDo I need a flow hood to use this?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eNot for the simplest workflow — breaking the spawn into a freshly opened Master's Mix bag in a clean, still space works for many growers. But for grain-to-grain transfers or any extended open work, a laminar flow hood or clean-room setup with HEPA-filtered air significantly lowers contamination risk. We carry both in our \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003eflow hood and clean room collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eWhere do your genetics come from?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eOur cultures come from our own in-house master collection at Myco Labs, plus a partnership with one of the largest commercial culture suppliers in Canada and select strains sourced from the UK and Asia. Everything is maintained as first-generation commercial genetics and selected for vigor and true-to-type fruiting.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eHow fresh is it, and how long will it stay viable?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eEvery bag is made fresh at our Illinois lab — never stockpiled for months. An unopened bag stays at peak viability for about 90 days at room temperature, or up to 120 days refrigerated. Refrigerate if you're not using it right away.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eCan I use this in a monotub instead of Master's Mix blocks?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eYes. While these are built for breaking up into sterilized Master's Mix, the colonized grain can be mixed into any properly prepared bulk substrate, including a monotub.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eWhat if my bag arrives contaminated or damaged?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eWe guarantee every bag ships fully colonized and contamination-free. If you receive a contaminated or damaged bag, contact us within 5 days of delivery with a photo and we'll replace it free of charge.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Midwest Grow Kits","offers":[{"title":"Default Title","offer_id":47406212579477,"sku":"BOGS","price":24.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Blue_oyster_grain_spawn.jpg?v=1780513419"},{"product_id":"golden-oyster-colonized-grain-spawn-bag-5-lb","title":"Golden Oyster Colonized Grain Spawn Bag 5 LB","description":"\u003cstyle\u003e.mgk-product-content .b { font-weight:600 !important; }\u003c\/style\u003e\n\u003cdiv class=\"mgk-product-content\"\u003e\n\u003cp\u003e\u003cspan class=\"b\"\u003eFully colonized Golden Oyster (\u003cem\u003ePleurotus citrinopileatus\u003c\/em\u003e) grain spawn, 5 LB\u003c\/span\u003e, grown on our millet-based grain blend in a filtered Unicorn 3T bag. Built on premium first-generation genetics and produced fresh at our Illinois lab — fully colonized before it ships and ready to break up and inoculate the moment it arrives. Golden Oyster fruits in vivid sunshine-yellow clusters with a delicate, nutty cashew aroma, and colonizes fast and prolifically. Its color makes it a standout at farmers markets and on restaurant plates alike.\u003c\/p\u003e\n\u003cdiv class=\"mgk-callout mgk-callout-ships\"\u003e\n\u003cspan class=\"b\"\u003e✓ Made Fresh — Ships Same or Next Business Day\u003c\/span\u003e\u003cbr\u003eWe don't stockpile spawn on a shelf for months. Bags are produced on a rolling schedule and held fully colonized, then shipped fresh.\u003c\/div\u003e\n\u003cdiv class=\"mgk-callout mgk-callout-ships\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch3\u003ePremium Genetics, Sourced Worldwide\u003c\/h3\u003e\n\u003cp\u003eStrong genetics are the difference between a reliable commercial run and a disappointing one — so we built our library from the best sources we could find. Our Golden Oyster spawn starts with our own in-house master culture collection at Myco Labs, refined over years of isolation work, and is expanded through a partnership with \u003cspan class=\"b\"\u003eone of the largest commercial culture suppliers in Canada\u003c\/span\u003e, along with select strains sourced from the \u003cspan class=\"b\"\u003eUK and Asia\u003c\/span\u003e. Every culture is held as first-generation commercial genetics and selected for vigorous, clean colonization and true-to-type fruiting. This is the genetic foundation serious cultivators build a farm on.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Receive\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003e5 LB of fully colonized grain spawn\u003c\/span\u003e — premium first-gen Golden Oyster (bags are filled generously and typically weigh in above 5 LB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eMillet-based grain blend\u003c\/span\u003e — primarily white and red millet with a small amount of milo; the fine grain gives plenty of inoculation points for fast, even colonization\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eUnicorn 3T bag\u003c\/span\u003e with a 0.22-micron filter patch and self-healing injection port\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003e3-mil construction\u003c\/span\u003e, sterilized in a 3-hour autoclave cycle\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eLab-inspected\u003c\/span\u003e for contamination and produced fresh at Myco Labs (Illinois, USA)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to Use Your Grain Spawn\u003c\/h3\u003e\n\u003cp\u003eThese bags are made to be broken up and mixed directly into sterilized bulk substrate. The most popular method is Master's Mix block production:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eMix into Master's Mix\u003c\/span\u003e — break up the colonized grain and combine it with our \u003ca href=\"https:\/\/www.midwestgrowkits.com\/products\/sterilized-masters-mix-bag-5-lbs\"\u003e5 LB Sterilized Master's Mix\u003c\/a\u003e. One 5 LB bag inoculates 12–13 Master's Mix bags. Step-by-step walkthrough here: \u003ca href=\"https:\/\/www.midwestgrowkits.com\/blogs\/blog-1-growing-101-more\/how-to-use-grain-spawn-with-master-s-mix-substrate\"\u003eHow to Use Grain Spawn with Master's Mix Substrate\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eExpand to more grain\u003c\/span\u003e — use a portion to inoculate additional sterilized grain (a grain-to-grain transfer) and multiply your spawn before spawning to bulk\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eSpawn a monotub or bulk bed\u003c\/span\u003e — mix into any properly prepared pasteurized or sterilized bulk substrate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor grain-to-grain transfers or any open work, do it in front of a \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003elaminar flow hood or clean-room setup\u003c\/a\u003e. A few minutes under HEPA-filtered air keeps contamination out and dramatically improves your success rate — especially when you're expanding spawn rather than going straight to a sealed Master's Mix bag.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/www.midwestgrowkits.com\/blogs\/blog-1-growing-101-more\/how-to-use-grain-spawn-with-master-s-mix-substrate\" style=\"display:block; margin:24px 0; text-align:center;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/How_to_use_Grain_Spawn_Link_final.jpg?v=1781605812\" alt=\"How to use colonized grain spawn with Master's Mix - step-by-step guide\" style=\"max-width:100%; height:auto; border-radius:6px;\" loading=\"lazy\"\u003e\n\u003c\/a\u003e\n\u003ch3\u003eGolden Oyster Growing Characteristics\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eLatin name\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cem\u003ePleurotus citrinopileatus\u003c\/em\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eMycelium appearance\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite, fast, fluffy growth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSpawn-to-substrate ratio\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e~1 part spawn to 3 parts substrate (one 5 LB bag → 12–13 Master's Mix bags)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003ePreferred substrate\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eMaster's Mix, hardwood sawdust + bran, straw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eFruiting temperature\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e65–80°F (warm-loving)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eDifficulty\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eBeginner-friendly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eUse category\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eGourmet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eGrain Spawn Specifications\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eNet weight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e5 LB advertised (typically fills to ~5.5 LB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eGrain\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003ePrimarily white and red millet with a small amount of milo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eBag\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e3T, 3-mil, 0.22-micron filter patch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eInjection port\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSterilization\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e3-hour autoclave cycle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSterility\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eProduced under HEPA-filtered laminar flow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eShelf life\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e90 days best \/ 120 days refrigerated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSterility \u0026amp; Quality Standards\u003c\/h3\u003e\n\u003cp\u003eEvery bag is produced and inspected at Myco Labs under HEPA-filtered laminar flow, then incubated in a dedicated clean room until fully colonized. Each bag is visually inspected for contamination before it's approved for shipment. If it doesn't look right, it doesn't ship.\u003c\/p\u003e\n\u003ch3\u003eShipping \u0026amp; Handling\u003c\/h3\u003e\n\u003cp\u003eSpawn ships in padded packaging. In summer months (May–September) or to hot-climate destinations, we include a cold pack at no additional cost. Use your spawn promptly for best results; an unopened bag stays at peak viability for about 90 days at room temperature, or up to 120 days refrigerated at 35–40°F. Refrigerate if you're not using it right away.\u003c\/p\u003e\n\u003ch3\u003eRecommended Companion Products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/products\/sterilized-masters-mix-bag-5-lbs\"\u003eSterilized Master's Mix (5 LB)\u003c\/a\u003e — the intended pairing; one spawn bag inoculates 12–13\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003eLaminar Flow Hoods \u0026amp; Clean Room Equipment\u003c\/a\u003e — for contamination-free grain transfers\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/liquid-culture-syringes\"\u003eLiquid Culture Syringes\u003c\/a\u003e — same genetics, ready-to-inject format\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/spawn-bags\"\u003eUninoculated Spawn Bags\u003c\/a\u003e — to colonize your own grain from culture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eIs this ready to use, or do I need to colonize it?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eIt's fully colonized and ready to go. Break it up and mix it directly into sterilized Master's Mix or your bulk substrate of choice — no inoculation, sterilization, or colonization wait on your end.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eHow many Master's Mix blocks will one 5 LB bag inoculate?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eOne 5 LB bag inoculates 12–13 of our 5 LB Sterilized Master's Mix bags at our recommended ratio, turning a single spawn bag into a full block run.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eDo I need a flow hood to use this?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eNot for the simplest workflow — breaking the spawn into a freshly opened Master's Mix bag in a clean, still space works for many growers. But for grain-to-grain transfers or any extended open work, a laminar flow hood or clean-room setup with HEPA-filtered air significantly lowers contamination risk. We carry both in our \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003eflow hood and clean room collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eWhere do your genetics come from?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eOur cultures come from our own in-house master collection at Myco Labs, plus a partnership with one of the largest commercial culture suppliers in Canada and select strains sourced from the UK and Asia. Everything is maintained as first-generation commercial genetics and selected for vigor and true-to-type fruiting.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eHow fresh is it, and how long will it stay viable?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eEvery bag is made fresh at our Illinois lab — never stockpiled for months. An unopened bag stays at peak viability for about 90 days at room temperature, or up to 120 days refrigerated. Refrigerate if you're not using it right away.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eCan I use this in a monotub instead of Master's Mix blocks?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eYes. While these are built for breaking up into sterilized Master's Mix, the colonized grain can be mixed into any properly prepared bulk substrate, including a monotub.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eWhat if my bag arrives contaminated or damaged?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eWe guarantee every bag ships fully colonized and contamination-free. If you receive a contaminated or damaged bag, contact us within 5 days of delivery with a photo and we'll replace it free of charge.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Midwest Grow Kits","offers":[{"title":"Default Title","offer_id":47406239580309,"sku":"GOGS","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Golden_oyster_grain_spawn.jpg?v=1780515252"},{"product_id":"king-oyster-colonized-grain-spawn-bag-5-lb","title":"King Oyster Colonized Grain Spawn Bag 5 LB","description":"\u003cstyle\u003e.mgk-product-content .b { font-weight:600 !important; }\u003c\/style\u003e\n\u003cdiv class=\"mgk-product-content\"\u003e\n\u003cp\u003e\u003cspan class=\"b\"\u003eFully colonized King Oyster (\u003cem\u003ePleurotus eryngii\u003c\/em\u003e) grain spawn, 5 LB\u003c\/span\u003e, grown on our millet-based grain blend in a filtered Unicorn 3T bag. Built on premium first-generation genetics and produced fresh at our Illinois lab — fully colonized before it ships and ready to break up and inoculate the moment it arrives. King Oyster is prized for its thick, meaty stems and mild umami flavor, with a firm scallop-like texture that holds up beautifully to searing, roasting, and grilling. It colonizes a touch slower than other oysters but rewards the wait with substantial, restaurant-grade fruits.\u003c\/p\u003e\n\u003cdiv class=\"mgk-callout mgk-callout-ships\"\u003e\n\u003cspan class=\"b\"\u003e✓ Made Fresh — Ships Same or Next Business Day\u003c\/span\u003e\u003cbr\u003eWe don't stockpile spawn on a shelf for months. Bags are produced on a rolling schedule and held fully colonized, then shipped fresh. \u003c\/div\u003e\n\u003cdiv class=\"mgk-callout mgk-callout-ships\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch3\u003ePremium Genetics, Sourced Worldwide\u003c\/h3\u003e\n\u003cp\u003eStrong genetics are the difference between a reliable commercial run and a disappointing one — so we built our library from the best sources we could find. Our King Oyster spawn starts with our own in-house master culture collection at Myco Labs, refined over years of isolation work, and is expanded through a partnership with \u003cspan class=\"b\"\u003eone of the largest commercial culture suppliers in Canada\u003c\/span\u003e, along with select strains sourced from the \u003cspan class=\"b\"\u003eUK and Asia\u003c\/span\u003e. Every culture is held as first-generation commercial genetics and selected for vigorous, clean colonization and true-to-type fruiting. This is the genetic foundation serious cultivators build a farm on.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Receive\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003e5 LB of fully colonized grain spawn\u003c\/span\u003e — premium first-gen King Oyster (bags are filled generously and typically weigh in above 5 LB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eMillet-based grain blend\u003c\/span\u003e — primarily white and red millet with a small amount of milo; the fine grain gives plenty of inoculation points for fast, even colonization\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eUnicorn 3T bag\u003c\/span\u003e with a 0.22-micron filter patch and self-healing injection port\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003e3-mil construction\u003c\/span\u003e, sterilized in a 3-hour autoclave cycle\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eLab-inspected\u003c\/span\u003e for contamination and produced fresh at Myco Labs (Illinois, USA)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to Use Your Grain Spawn\u003c\/h3\u003e\n\u003cp\u003eThese bags are made to be broken up and mixed directly into sterilized bulk substrate. The most popular method is Master's Mix block production:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eMix into Master's Mix\u003c\/span\u003e — break up the colonized grain and combine it with our \u003ca href=\"https:\/\/www.midwestgrowkits.com\/products\/sterilized-masters-mix-bag-5-lbs\"\u003e5 LB Sterilized Master's Mix\u003c\/a\u003e. One 5 LB bag inoculates 12–13 Master's Mix bags. Step-by-step walkthrough here: \u003ca href=\"https:\/\/www.midwestgrowkits.com\/blogs\/blog-1-growing-101-more\/how-to-use-grain-spawn-with-master-s-mix-substrate\"\u003eHow to Use Grain Spawn with Master's Mix Substrate\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eExpand to more grain\u003c\/span\u003e — use a portion to inoculate additional sterilized grain (a grain-to-grain transfer) and multiply your spawn before spawning to bulk\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eSpawn a monotub or bulk bed\u003c\/span\u003e — mix into any properly prepared pasteurized or sterilized bulk substrate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor grain-to-grain transfers or any open work, do it in front of a \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003elaminar flow hood or clean-room setup\u003c\/a\u003e. A few minutes under HEPA-filtered air keeps contamination out and dramatically improves your success rate — especially when you're expanding spawn rather than going straight to a sealed Master's Mix bag.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/www.midwestgrowkits.com\/blogs\/blog-1-growing-101-more\/how-to-use-grain-spawn-with-master-s-mix-substrate\" style=\"display:block; margin:24px 0; text-align:center;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/How_to_use_Grain_Spawn_Link_final.jpg?v=1781605812\" alt=\"How to use colonized grain spawn with Master's Mix - step-by-step guide\" style=\"max-width:100%; height:auto; border-radius:6px;\" loading=\"lazy\"\u003e\n\u003c\/a\u003e\n\u003ch3\u003eKing Oyster Growing Characteristics\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eLatin name\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cem\u003ePleurotus eryngii\u003c\/em\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eMycelium appearance\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite, dense growth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSpawn-to-substrate ratio\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e~1 part spawn to 3 parts substrate (one 5 LB bag → 12–13 Master's Mix bags)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003ePreferred substrate\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eMaster's Mix, supplemented hardwood sawdust\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eFruiting temperature\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e60–70°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eDifficulty\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eIntermediate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eUse category\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eGourmet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eGrain Spawn Specifications\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eNet weight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e5 LB advertised (typically fills to ~5.5 LB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eGrain\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003ePrimarily white and red millet with a small amount of milo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eBag\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e3T, 3-mil, 0.22-micron filter patch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eInjection port\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003en\/a\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSterilization\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e3-hour autoclave cycle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSterility\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eProduced under HEPA-filtered laminar flow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eShelf life\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e90 days best \/ 120 days refrigerated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSterility \u0026amp; Quality Standards\u003c\/h3\u003e\n\u003cp\u003eEvery bag is produced and inspected at Myco Labs under HEPA-filtered laminar flow, then incubated in a dedicated clean room until fully colonized. Each bag is visually inspected for contamination before it's approved for shipment. If it doesn't look right, it doesn't ship.\u003c\/p\u003e\n\u003ch3\u003eShipping \u0026amp; Handling\u003c\/h3\u003e\n\u003cp\u003eSpawn ships in padded packaging. In summer months (May–September) or to hot-climate destinations, we include a cold pack at no additional cost. Use your spawn promptly for best results; an unopened bag stays at peak viability for about 90 days at room temperature, or up to 120 days refrigerated at 35–40°F. Refrigerate if you're not using it right away.\u003c\/p\u003e\n\u003ch3\u003eRecommended Companion Products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/products\/sterilized-masters-mix-bag-5-lbs\"\u003eSterilized Master's Mix (5 LB)\u003c\/a\u003e — the intended pairing; one spawn bag inoculates 12–13\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003eLaminar Flow Hoods \u0026amp; Clean Room Equipment\u003c\/a\u003e — for contamination-free grain transfers\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/liquid-culture-syringes\"\u003eLiquid Culture Syringes\u003c\/a\u003e — same genetics, ready-to-inject format\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/spawn-bags\"\u003eUninoculated Spawn Bags\u003c\/a\u003e — to colonize your own grain from culture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eIs this ready to use, or do I need to colonize it?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eIt's fully colonized and ready to go. Break it up and mix it directly into sterilized Master's Mix or your bulk substrate of choice — no inoculation, sterilization, or colonization wait on your end.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eHow many Master's Mix blocks will one 5 LB bag inoculate?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eOne 5 LB bag inoculates 12–13 of our 5 LB Sterilized Master's Mix bags at our recommended ratio, turning a single spawn bag into a full block run.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eDo I need a flow hood to use this?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eNot for the simplest workflow — breaking the spawn into a freshly opened Master's Mix bag in a clean, still space works for many growers. But for grain-to-grain transfers or any extended open work, a laminar flow hood or clean-room setup with HEPA-filtered air significantly lowers contamination risk. We carry both in our \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003eflow hood and clean room collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eWhere do your genetics come from?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eOur cultures come from our own in-house master collection at Myco Labs, plus a partnership with one of the largest commercial culture suppliers in Canada and select strains sourced from the UK and Asia. Everything is maintained as first-generation commercial genetics and selected for vigor and true-to-type fruiting.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eHow fresh is it, and how long will it stay viable?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eEvery bag is made fresh at our Illinois lab — never stockpiled for months. An unopened bag stays at peak viability for about 90 days at room temperature, or up to 120 days refrigerated. Refrigerate if you're not using it right away.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eCan I use this in a monotub instead of Master's Mix blocks?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eYes. While these are built for breaking up into sterilized Master's Mix, the colonized grain can be mixed into any properly prepared bulk substrate, including a monotub.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eWhat if my bag arrives contaminated or damaged?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eWe guarantee every bag ships fully colonized and contamination-free. If you receive a contaminated or damaged bag, contact us within 5 days of delivery with a photo and we'll replace it free of charge.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Midwest Grow Kits","offers":[{"title":"Default Title","offer_id":47406381105301,"sku":"KOGS","price":24.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/King_oyster_colonized_grain.jpg?v=1780521534"},{"product_id":"black-pearl-king-oyster-grain-spawn-5-lb","title":"Black Pearl King Oyster Grain Spawn 5 LB","description":"\u003cstyle\u003e.mgk-product-content .b { font-weight:600 !important; }\u003c\/style\u003e\n\u003cdiv class=\"mgk-product-content\"\u003e\n\u003cp\u003e\u003cspan class=\"b\"\u003eFully colonized Black Pearl King Oyster (\u003cem\u003ePleurotus ostreatus × eryngii\u003c\/em\u003e) grain spawn, 5 LB\u003c\/span\u003e, grown on our millet-based grain blend in a filtered Unicorn 3T bag. Built on premium first-generation genetics and produced fresh at our Illinois lab — fully colonized before it ships and ready to break up and inoculate the moment it arrives. A prized cross of Oyster and King Oyster, Black Pearl produces dramatic dark grey-black caps over thick, meaty stems — pairing oyster vigor and speed with king-oyster substance and flavor. It's robust, forgiving, and one of the most striking mushrooms you can bring to market.\u003c\/p\u003e\n\u003cdiv class=\"mgk-callout mgk-callout-ships\"\u003e\n\u003cspan class=\"b\"\u003e✓ Made Fresh — Ships Same or Next Business Day\u003c\/span\u003e\u003cbr\u003eWe don't stockpile spawn on a shelf for months. Bags are produced on a rolling schedule and held fully colonized, then shipped fresh.\u003c\/div\u003e\n\u003cdiv class=\"mgk-callout mgk-callout-ships\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch3\u003ePremium Genetics, Sourced Worldwide\u003c\/h3\u003e\n\u003cp\u003eStrong genetics are the difference between a reliable commercial run and a disappointing one — so we built our library from the best sources we could find. Our Black Pearl King Oyster spawn starts with our own in-house master culture collection at Myco Labs, refined over years of isolation work, and is expanded through a partnership with \u003cspan class=\"b\"\u003eone of the largest commercial culture suppliers in Canada\u003c\/span\u003e, along with select strains sourced from the \u003cspan class=\"b\"\u003eUK and Asia\u003c\/span\u003e. Every culture is held as first-generation commercial genetics and selected for vigorous, clean colonization and true-to-type fruiting. This is the genetic foundation serious cultivators build a farm on.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Receive\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003e5 LB of fully colonized grain spawn\u003c\/span\u003e — premium first-gen Black Pearl King Oyster (bags are filled generously and typically weigh in above 5 LB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eMillet-based grain blend\u003c\/span\u003e — primarily white and red millet with a small amount of milo; the fine grain gives plenty of inoculation points for fast, even colonization\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003e3T Spawn bag\u003c\/span\u003e with a 0.22-micron filter patch and self-healing injection port\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003e3-mil construction\u003c\/span\u003e, sterilized in a 3-hour autoclave cycle\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eLab-inspected\u003c\/span\u003e for contamination and produced fresh at Myco Labs (Illinois, USA)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to Use Your Grain Spawn\u003c\/h3\u003e\n\u003cp\u003eThese bags are made to be broken up and mixed directly into sterilized bulk substrate. The most popular method is Master's Mix block production:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eMix into Master's Mix\u003c\/span\u003e — break up the colonized grain and combine it with our \u003ca href=\"https:\/\/www.midwestgrowkits.com\/products\/sterilized-masters-mix-bag-5-lbs\"\u003e5 LB Sterilized Master's Mix\u003c\/a\u003e. One 5 LB bag inoculates 12–13 Master's Mix bags. Step-by-step walkthrough here: \u003ca href=\"https:\/\/www.midwestgrowkits.com\/blogs\/blog-1-growing-101-more\/how-to-use-grain-spawn-with-master-s-mix-substrate\"\u003eHow to Use Grain Spawn with Master's Mix Substrate\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eExpand to more grain\u003c\/span\u003e — use a portion to inoculate additional sterilized grain (a grain-to-grain transfer) and multiply your spawn before spawning to bulk\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eSpawn a monotub or bulk bed\u003c\/span\u003e — mix into any properly prepared pasteurized or sterilized bulk substrate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor grain-to-grain transfers or any open work, do it in front of a \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003elaminar flow hood or clean-room setup\u003c\/a\u003e. A few minutes under HEPA-filtered air keeps contamination out and dramatically improves your success rate — especially when you're expanding spawn rather than going straight to a sealed Master's Mix bag.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/www.midwestgrowkits.com\/blogs\/blog-1-growing-101-more\/how-to-use-grain-spawn-with-master-s-mix-substrate\" style=\"display:block; margin:24px 0; text-align:center;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/How_to_use_Grain_Spawn_Link_final.jpg?v=1781605812\" alt=\"How to use colonized grain spawn with Master's Mix - step-by-step guide\" style=\"max-width:100%; height:auto; border-radius:6px;\" loading=\"lazy\"\u003e\n\u003c\/a\u003e\n\u003ch3\u003eBlack Pearl King Oyster Growing Characteristics\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eLatin name\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cem\u003ePleurotus ostreatus × eryngii\u003c\/em\u003e (hybrid)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eMycelium appearance\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite, vigorous growth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSpawn-to-substrate ratio\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e~1 part spawn to 3 parts substrate (one 5 LB bag → 12–13 Master's Mix bags)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003ePreferred substrate\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eMaster's Mix, supplemented hardwood sawdust\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eFruiting temperature\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e60–70°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eDifficulty\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eBeginner-to-intermediate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eUse category\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eGourmet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eGrain Spawn Specifications\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eNet weight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e5 LB advertised (typically fills to ~5.5 LB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eGrain\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003ePrimarily white and red millet with a small amount of milo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eBag\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e3T, 3-mil, 0.22-micron filter patch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eInjection port\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSterilization\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e3-hour autoclave cycle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSterility\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eProduced under HEPA-filtered laminar flow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eShelf life\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e90 days best \/ 120 days refrigerated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSterility \u0026amp; Quality Standards\u003c\/h3\u003e\n\u003cp\u003eEvery bag is produced and inspected at Myco Labs under HEPA-filtered laminar flow, then incubated in a dedicated clean room until fully colonized. Each bag is visually inspected for contamination before it's approved for shipment. If it doesn't look right, it doesn't ship.\u003c\/p\u003e\n\u003ch3\u003eShipping \u0026amp; Handling\u003c\/h3\u003e\n\u003cp\u003eSpawn ships in padded packaging. In summer months (May–September) or to hot-climate destinations, we include a cold pack at no additional cost. Use your spawn promptly for best results; an unopened bag stays at peak viability for about 90 days at room temperature, or up to 120 days refrigerated at 35–40°F. Refrigerate if you're not using it right away.\u003c\/p\u003e\n\u003ch3\u003eRecommended Companion Products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/products\/sterilized-masters-mix-bag-5-lbs\"\u003eSterilized Master's Mix (5 LB)\u003c\/a\u003e — the intended pairing; one spawn bag inoculates 12–13\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003eLaminar Flow Hoods \u0026amp; Clean Room Equipment\u003c\/a\u003e — for contamination-free grain transfers\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/liquid-culture-syringes\"\u003eLiquid Culture Syringes\u003c\/a\u003e — same genetics, ready-to-inject format\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/spawn-bags\"\u003eUninoculated Spawn Bags\u003c\/a\u003e — to colonize your own grain from culture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eIs this ready to use, or do I need to colonize it?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eIt's fully colonized and ready to go. Break it up and mix it directly into sterilized Master's Mix or your bulk substrate of choice — no inoculation, sterilization, or colonization wait on your end.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eHow many Master's Mix blocks will one 5 LB bag inoculate?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eOne 5 LB bag inoculates 12–13 of our 5 LB Sterilized Master's Mix bags at our recommended ratio, turning a single spawn bag into a full block run.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eDo I need a flow hood to use this?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eNot for the simplest workflow — breaking the spawn into a freshly opened Master's Mix bag in a clean, still space works for many growers. But for grain-to-grain transfers or any extended open work, a laminar flow hood or clean-room setup with HEPA-filtered air significantly lowers contamination risk. We carry both in our \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003eflow hood and clean room collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eWhere do your genetics come from?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eOur cultures come from our own in-house master collection at Myco Labs, plus a partnership with one of the largest commercial culture suppliers in Canada and select strains sourced from the UK and Asia. Everything is maintained as first-generation commercial genetics and selected for vigor and true-to-type fruiting.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eHow fresh is it, and how long will it stay viable?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eEvery bag is made fresh at our Illinois lab — never stockpiled for months. An unopened bag stays at peak viability for about 90 days at room temperature, or up to 120 days refrigerated. Refrigerate if you're not using it right away.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eCan I use this in a monotub instead of Master's Mix blocks?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eYes. While these are built for breaking up into sterilized Master's Mix, the colonized grain can be mixed into any properly prepared bulk substrate, including a monotub.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eWhat if my bag arrives contaminated or damaged?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eWe guarantee every bag ships fully colonized and contamination-free. If you receive a contaminated or damaged bag, contact us within 5 days of delivery with a photo and we'll replace it free of charge.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Midwest Grow Kits","offers":[{"title":"Default Title","offer_id":47412368572565,"sku":"BPKGS","price":24.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/BPK_colonized_grain.jpg?v=1780658682"},{"product_id":"pearl-white-oyster-grain-spawn-bag-5-lb","title":"Pearl White Oyster Grain Spawn Bag 5 LB","description":"\u003cstyle\u003e.mgk-product-content .b { font-weight:600 !important; }\u003c\/style\u003e\n\u003cdiv class=\"mgk-product-content\"\u003e\n\u003cp\u003e\u003cspan class=\"b\"\u003eFully colonized Pearl White Oyster (\u003cem\u003ePleurotus ostreatus\u003c\/em\u003e) grain spawn, 5 LB\u003c\/span\u003e, grown on our millet-based grain blend in a filtered Unicorn 3T bag. Built on premium first-generation genetics and produced fresh at our Illinois lab — fully colonized before it ships and ready to break up and inoculate the moment it arrives. Pearl White is the classic gourmet oyster: fast, forgiving, high-yielding, and tolerant of a wide temperature range. Its mild, versatile flavor and dependable performance make it a year-round staple for growers at any scale.\u003c\/p\u003e\n\u003cdiv class=\"mgk-callout mgk-callout-ships\"\u003e\n\u003cspan class=\"b\"\u003e✓ Made Fresh — Ships Same or Next Business Day\u003c\/span\u003e\u003cbr\u003eWe don't stockpile spawn on a shelf for months. Bags are produced on a rolling schedule and held fully colonized, then shipped fresh. \u003c\/div\u003e\n\u003cdiv class=\"mgk-callout mgk-callout-ships\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch3\u003ePremium Genetics, Sourced Worldwide\u003c\/h3\u003e\n\u003cp\u003eStrong genetics are the difference between a reliable commercial run and a disappointing one — so we built our library from the best sources we could find. Our Pearl White Oyster spawn starts with our own in-house master culture collection at Myco Labs, refined over years of isolation work, and is expanded through a partnership with \u003cspan class=\"b\"\u003eone of the largest commercial culture suppliers in Canada\u003c\/span\u003e, along with select strains sourced from the \u003cspan class=\"b\"\u003eUK and Asia\u003c\/span\u003e. Every culture is held as first-generation commercial genetics and selected for vigorous, clean colonization and true-to-type fruiting. This is the genetic foundation serious cultivators build a farm on.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Receive\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003e5 LB of fully colonized grain spawn\u003c\/span\u003e — premium first-gen Pearl White Oyster (bags are filled generously and typically weigh in above 5 LB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eMillet-based grain blend\u003c\/span\u003e — primarily white and red millet with a small amount of milo; the fine grain gives plenty of inoculation points for fast, even colonization\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eUnicorn 3T bag\u003c\/span\u003e with a 0.22-micron filter patch and self-healing injection port\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003e3-mil construction\u003c\/span\u003e, sterilized in a 3-hour autoclave cycle\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eLab-inspected\u003c\/span\u003e for contamination and produced fresh at Myco Labs (Illinois, USA)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to Use Your Grain Spawn\u003c\/h3\u003e\n\u003cp\u003eThese bags are made to be broken up and mixed directly into sterilized bulk substrate. The most popular method is Master's Mix block production:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eMix into Master's Mix\u003c\/span\u003e — break up the colonized grain and combine it with our \u003ca href=\"https:\/\/www.midwestgrowkits.com\/products\/sterilized-masters-mix-bag-5-lbs\"\u003e5 LB Sterilized Master's Mix\u003c\/a\u003e. One 5 LB bag inoculates 12–13 Master's Mix bags. Step-by-step walkthrough here: \u003ca href=\"https:\/\/www.midwestgrowkits.com\/blogs\/blog-1-growing-101-more\/how-to-use-grain-spawn-with-master-s-mix-substrate\"\u003eHow to Use Grain Spawn with Master's Mix Substrate\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eExpand to more grain\u003c\/span\u003e — use a portion to inoculate additional sterilized grain (a grain-to-grain transfer) and multiply your spawn before spawning to bulk\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eSpawn a monotub or bulk bed\u003c\/span\u003e — mix into any properly prepared pasteurized or sterilized bulk substrate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor grain-to-grain transfers or any open work, do it in front of a \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003elaminar flow hood or clean-room setup\u003c\/a\u003e. A few minutes under HEPA-filtered air keeps contamination out and dramatically improves your success rate — especially when you're expanding spawn rather than going straight to a sealed Master's Mix bag.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/www.midwestgrowkits.com\/blogs\/blog-1-growing-101-more\/how-to-use-grain-spawn-with-master-s-mix-substrate\" style=\"display:block; margin:24px 0; text-align:center;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/How_to_use_Grain_Spawn_Link_final.jpg?v=1781605812\" alt=\"How to use colonized grain spawn with Master's Mix - step-by-step guide\" style=\"max-width:100%; height:auto; border-radius:6px;\" loading=\"lazy\"\u003e\n\u003c\/a\u003e\n\u003ch3\u003ePearl White Oyster Growing Characteristics\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eLatin name\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cem\u003ePleurotus ostreatus\u003c\/em\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eMycelium appearance\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite, fast, rhizomorphic growth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSpawn-to-substrate ratio\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e~1 part spawn to 3 parts substrate (one 5 LB bag → 12–13 Master's Mix bags)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003ePreferred substrate\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eMaster's Mix, hardwood sawdust + bran, straw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eFruiting temperature\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e55–75°F (wide range)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eDifficulty\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eBeginner-friendly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eUse category\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eGourmet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eGrain Spawn Specifications\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eNet weight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e5 LB advertised (typically fills to ~5.5 LB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eGrain\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003ePrimarily white and red millet with a small amount of milo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eBag\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e3T, 3-mil, 0.22-micron filter patch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eInjection port\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003en\/a\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSterilization\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e3-hour autoclave cycle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSterility\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eProduced under HEPA-filtered laminar flow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eShelf life\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e90 days best \/ 120 days refrigerated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSterility \u0026amp; Quality Standards\u003c\/h3\u003e\n\u003cp\u003eEvery bag is produced and inspected at Myco Labs under HEPA-filtered laminar flow, then incubated in a dedicated clean room until fully colonized. Each bag is visually inspected for contamination before it's approved for shipment. If it doesn't look right, it doesn't ship.\u003c\/p\u003e\n\u003ch3\u003eShipping \u0026amp; Handling\u003c\/h3\u003e\n\u003cp\u003eSpawn ships in padded packaging. In summer months (May–September) or to hot-climate destinations, we include a cold pack at no additional cost. Use your spawn promptly for best results; an unopened bag stays at peak viability for about 90 days at room temperature, or up to 120 days refrigerated at 35–40°F. Refrigerate if you're not using it right away.\u003c\/p\u003e\n\u003ch3\u003eRecommended Companion Products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/products\/sterilized-masters-mix-bag-5-lbs\"\u003eSterilized Master's Mix (5 LB)\u003c\/a\u003e — the intended pairing; one spawn bag inoculates 12–13\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003eLaminar Flow Hoods \u0026amp; Clean Room Equipment\u003c\/a\u003e — for contamination-free grain transfers\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/liquid-culture-syringes\"\u003eLiquid Culture Syringes\u003c\/a\u003e — same genetics, ready-to-inject format\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/spawn-bags\"\u003eUninoculated Spawn Bags\u003c\/a\u003e — to colonize your own grain from culture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eIs this ready to use, or do I need to colonize it?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eIt's fully colonized and ready to go. Break it up and mix it directly into sterilized Master's Mix or your bulk substrate of choice — no inoculation, sterilization, or colonization wait on your end.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eHow many Master's Mix blocks will one 5 LB bag inoculate?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eOne 5 LB bag inoculates 12–13 of our 5 LB Sterilized Master's Mix bags at our recommended ratio, turning a single spawn bag into a full block run.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eDo I need a flow hood to use this?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eNot for the simplest workflow — breaking the spawn into a freshly opened Master's Mix bag in a clean, still space works for many growers. But for grain-to-grain transfers or any extended open work, a laminar flow hood or clean-room setup with HEPA-filtered air significantly lowers contamination risk. We carry both in our \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003eflow hood and clean room collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eWhere do your genetics come from?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eOur cultures come from our own in-house master collection at Myco Labs, plus a partnership with one of the largest commercial culture suppliers in Canada and select strains sourced from the UK and Asia. Everything is maintained as first-generation commercial genetics and selected for vigor and true-to-type fruiting.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eHow fresh is it, and how long will it stay viable?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eEvery bag is made fresh at our Illinois lab — never stockpiled for months. An unopened bag stays at peak viability for about 90 days at room temperature, or up to 120 days refrigerated. Refrigerate if you're not using it right away.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eCan I use this in a monotub instead of Master's Mix blocks?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eYes. While these are built for breaking up into sterilized Master's Mix, the colonized grain can be mixed into any properly prepared bulk substrate, including a monotub.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eWhat if my bag arrives contaminated or damaged?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eWe guarantee every bag ships fully colonized and contamination-free. If you receive a contaminated or damaged bag, contact us within 5 days of delivery with a photo and we'll replace it free of charge.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Midwest Grow Kits","offers":[{"title":"Default Title","offer_id":47412422475925,"sku":"PWGS","price":24.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Pearl_oyster_grain_spawn.jpg?v=1780659463"},{"product_id":"maitake-colonized-grain-spawn-bag-5-lb","title":"Maitake Colonized Grain Spawn Bag 5 LB","description":"\u003cstyle\u003e.mgk-product-content .b { font-weight:600 !important; }\u003c\/style\u003e\n\u003cdiv class=\"mgk-product-content\"\u003e\n\u003cp\u003e\u003cspan class=\"b\"\u003eFully colonized Maitake (\u003cem\u003eGrifola frondosa\u003c\/em\u003e) grain spawn, 5 LB\u003c\/span\u003e, grown on our millet-based grain blend in a filtered Unicorn 3T bag. Built on premium first-generation genetics and produced fresh at our Illinois lab — fully colonized before it ships and ready to break up and inoculate the moment it arrives. Maitake, known as Hen of the Woods, fruits in large feathered rosettes with a rich, earthy flavor and a celebrated functional reputation. It's a slower, more advanced variety that demands the right conditions — but few mushrooms are as prized on the plate or in the market.\u003c\/p\u003e\n\u003cdiv class=\"mgk-callout mgk-callout-ships\"\u003e\n\u003cspan class=\"b\"\u003e✓ Made Fresh — Ships Same or Next Business Day\u003c\/span\u003e\u003cbr\u003eWe don't stockpile spawn on a shelf for months. Bags are produced on a rolling schedule and held fully colonized, then shipped fresh.\u003c\/div\u003e\n\u003cdiv class=\"mgk-callout mgk-callout-ships\"\u003e\u003c\/div\u003e\n\u003ch3\u003ePremium Genetics, Sourced Worldwide\u003c\/h3\u003e\n\u003cp\u003eStrong genetics are the difference between a reliable commercial run and a disappointing one — so we built our library from the best sources we could find. Our Maitake spawn starts with our own in-house master culture collection at Myco Labs, refined over years of isolation work, and is expanded through a partnership with \u003cspan class=\"b\"\u003eone of the largest commercial culture suppliers in Canada\u003c\/span\u003e, along with select strains sourced from the \u003cspan class=\"b\"\u003eUK and Asia\u003c\/span\u003e. Every culture is held as first-generation commercial genetics and selected for vigorous, clean colonization and true-to-type fruiting. This is the genetic foundation serious cultivators build a farm on.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Receive\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003e5 LB of fully colonized grain spawn\u003c\/span\u003e — premium first-gen Maitake (bags are filled generously and typically weigh in above 5 LB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eMillet-based grain blend\u003c\/span\u003e — primarily white and red millet with a small amount of milo; the fine grain gives plenty of inoculation points for fast, even colonization\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eUnicorn 10T bag\u003c\/span\u003e with a 0.22-micron filter patch and self-healing injection port\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003e3-mil construction\u003c\/span\u003e, sterilized in a 3-hour autoclave cycle\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eLab-inspected\u003c\/span\u003e for contamination and produced fresh at Myco Labs (Illinois, USA)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to Use Your Grain Spawn\u003c\/h3\u003e\n\u003cp\u003eThese bags are made to be broken up and mixed directly into sterilized bulk substrate. The most popular method is Master's Mix block production:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eMix into Master's Mix\u003c\/span\u003e — break up the colonized grain and combine it with our \u003ca href=\"https:\/\/www.midwestgrowkits.com\/products\/sterilized-masters-mix-bag-5-lbs\"\u003e5 LB Sterilized Master's Mix\u003c\/a\u003e. One 5 LB bag inoculates 12–13 Master's Mix bags. Step-by-step walkthrough here: \u003ca href=\"https:\/\/www.midwestgrowkits.com\/blogs\/blog-1-growing-101-more\/how-to-use-grain-spawn-with-master-s-mix-substrate\"\u003eHow to Use Grain Spawn with Master's Mix Substrate\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eExpand to more grain\u003c\/span\u003e — use a portion to inoculate additional sterilized grain (a grain-to-grain transfer) and multiply your spawn before spawning to bulk\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eSpawn a monotub or bulk bed\u003c\/span\u003e — mix into any properly prepared pasteurized or sterilized bulk substrate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor grain-to-grain transfers or any open work, do it in front of a \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003elaminar flow hood or clean-room setup\u003c\/a\u003e. A few minutes under HEPA-filtered air keeps contamination out and dramatically improves your success rate — especially when you're expanding spawn rather than going straight to a sealed Master's Mix bag.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/www.midwestgrowkits.com\/blogs\/blog-1-growing-101-more\/how-to-use-grain-spawn-with-master-s-mix-substrate\" style=\"display:block; margin:24px 0; text-align:center;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/How_to_use_Grain_Spawn_Link_final.jpg?v=1781605812\" alt=\"How to use colonized grain spawn with Master's Mix - step-by-step guide\" style=\"max-width:100%; height:auto; border-radius:6px;\" loading=\"lazy\"\u003e\n\u003c\/a\u003e\n\u003ch3\u003eMaitake Growing Characteristics\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eLatin name\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cem\u003eGrifola frondosa\u003c\/em\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eMycelium appearance\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite, slow-growing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSpawn-to-substrate ratio\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e~1 part spawn to 3 parts substrate (one 5 LB bag → 12–13 Master's Mix bags)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003ePreferred substrate\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eHardwood sawdust + bran, Master's Mix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eFruiting temperature\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e55–65°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eDifficulty\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eAdvanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eUse category\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eGourmet + functional\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eGrain Spawn Specifications\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eNet weight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e5 LB advertised (typically fills to ~5.5 LB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eGrain\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003ePrimarily white and red millet with a small amount of milo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eBag\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eUnicorn 10T, 3-mil, 0.22-micron filter patch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eInjection port\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSterilization\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e3-hour autoclave cycle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSterility\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eProduced under HEPA-filtered laminar flow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eShelf life\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e90 days best \/ 120 days refrigerated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSterility \u0026amp; Quality Standards\u003c\/h3\u003e\n\u003cp\u003eEvery bag is produced and inspected at Myco Labs under HEPA-filtered laminar flow, then incubated in a dedicated clean room until fully colonized. Each bag is visually inspected for contamination before it's approved for shipment. If it doesn't look right, it doesn't ship.\u003c\/p\u003e\n\u003ch3\u003eShipping \u0026amp; Handling\u003c\/h3\u003e\n\u003cp\u003eSpawn ships in padded packaging. In summer months (May–September) or to hot-climate destinations, we include a cold pack at no additional cost. Use your spawn promptly for best results; an unopened bag stays at peak viability for about 90 days at room temperature, or up to 120 days refrigerated at 35–40°F. Refrigerate if you're not using it right away.\u003c\/p\u003e\n\u003ch3\u003eRecommended Companion Products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/products\/sterilized-masters-mix-bag-5-lbs\"\u003eSterilized Master's Mix (5 LB)\u003c\/a\u003e — the intended pairing; one spawn bag inoculates 12–13\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003eLaminar Flow Hoods \u0026amp; Clean Room Equipment\u003c\/a\u003e — for contamination-free grain transfers\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/liquid-culture-syringes\"\u003eLiquid Culture Syringes\u003c\/a\u003e — same genetics, ready-to-inject format\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/spawn-bags\"\u003eUninoculated Spawn Bags\u003c\/a\u003e — to colonize your own grain from culture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eIs this ready to use, or do I need to colonize it?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eIt's fully colonized and ready to go. Break it up and mix it directly into sterilized Master's Mix or your bulk substrate of choice — no inoculation, sterilization, or colonization wait on your end.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eHow many Master's Mix blocks will one 5 LB bag inoculate?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eOne 5 LB bag inoculates 12–13 of our 5 LB Sterilized Master's Mix bags at our recommended ratio, turning a single spawn bag into a full block run.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eDo I need a flow hood to use this?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eNot for the simplest workflow — breaking the spawn into a freshly opened Master's Mix bag in a clean, still space works for many growers. But for grain-to-grain transfers or any extended open work, a laminar flow hood or clean-room setup with HEPA-filtered air significantly lowers contamination risk. We carry both in our \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003eflow hood and clean room collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eWhere do your genetics come from?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eOur cultures come from our own in-house master collection at Myco Labs, plus a partnership with one of the largest commercial culture suppliers in Canada and select strains sourced from the UK and Asia. Everything is maintained as first-generation commercial genetics and selected for vigor and true-to-type fruiting.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eHow fresh is it, and how long will it stay viable?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eEvery bag is made fresh at our Illinois lab — never stockpiled for months. An unopened bag stays at peak viability for about 90 days at room temperature, or up to 120 days refrigerated. Refrigerate if you're not using it right away.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eCan I use this in a monotub instead of Master's Mix blocks?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eYes. While these are built for breaking up into sterilized Master's Mix, the colonized grain can be mixed into any properly prepared bulk substrate, including a monotub.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eWhat if my bag arrives contaminated or damaged?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eWe guarantee every bag ships fully colonized and contamination-free. If you receive a contaminated or damaged bag, contact us within 5 days of delivery with a photo and we'll replace it free of charge.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Midwest Grow Kits","offers":[{"title":"Default Title","offer_id":47412447084693,"sku":"MTGS","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Maitake_grain_spawn.jpg?v=1780660010"},{"product_id":"pink-oyster-colonized-grain-spawn-bag-5-lb","title":"Pink Oyster Colonized Grain Spawn Bag 5 LB","description":"\u003cstyle\u003e.mgk-product-content .b { font-weight:600 !important; }\u003c\/style\u003e\n\u003cdiv class=\"mgk-product-content\"\u003e\n\u003cp\u003e\u003cspan class=\"b\"\u003eFully colonized Pink Oyster (\u003cem\u003ePleurotus djamor\u003c\/em\u003e) grain spawn, 5 LB\u003c\/span\u003e, grown on our millet-based grain blend in a filtered Unicorn 3T bag. Built on premium first-generation genetics and produced fresh at our Illinois lab — fully colonized before it ships and ready to break up and inoculate the moment it arrives. Pink Oyster is the fastest colonizer of all the oysters, fruiting in brilliant ruffled pink clusters that turn heads at any market. It loves warm weather, yields heavily, and develops a savory, almost bacon-like flavor when cooked crisp.\u003c\/p\u003e\n\u003cdiv class=\"mgk-callout mgk-callout-ships\"\u003e\n\u003cspan class=\"b\"\u003e✓ Made Fresh — Ships Same or Next Business Day\u003c\/span\u003e\u003cbr\u003eWe don't stockpile spawn on a shelf for months. Bags are produced on a rolling schedule and held fully colonized, then shipped fresh.\u003c\/div\u003e\n\u003cdiv class=\"mgk-callout mgk-callout-ships\"\u003e\u003c\/div\u003e\n\u003ch3\u003ePremium Genetics, Sourced Worldwide\u003c\/h3\u003e\n\u003cp\u003eStrong genetics are the difference between a reliable commercial run and a disappointing one — so we built our library from the best sources we could find. Our Pink Oyster spawn starts with our own in-house master culture collection at Myco Labs, refined over years of isolation work, and is expanded through a partnership with \u003cspan class=\"b\"\u003eone of the largest commercial culture suppliers in Canada\u003c\/span\u003e, along with select strains sourced from the \u003cspan class=\"b\"\u003eUK and Asia\u003c\/span\u003e. Every culture is held as first-generation commercial genetics and selected for vigorous, clean colonization and true-to-type fruiting. This is the genetic foundation serious cultivators build a farm on.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Receive\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003e5 LB of fully colonized grain spawn\u003c\/span\u003e — premium first-gen Pink Oyster (bags are filled generously and typically weigh in above 5 LB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eMillet-based grain blend\u003c\/span\u003e — primarily white and red millet with a small amount of milo; the fine grain gives plenty of inoculation points for fast, even colonization\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eUnicorn 10T bag\u003c\/span\u003e with a 0.22-micron filter patch and self-healing injection port\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003e3-mil construction\u003c\/span\u003e, sterilized in a 3-hour autoclave cycle\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eLab-inspected\u003c\/span\u003e for contamination and produced fresh at Myco Labs (Illinois, USA)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to Use Your Grain Spawn\u003c\/h3\u003e\n\u003cp\u003eThese bags are made to be broken up and mixed directly into sterilized bulk substrate. The most popular method is Master's Mix block production:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eMix into Master's Mix\u003c\/span\u003e — break up the colonized grain and combine it with our \u003ca href=\"https:\/\/www.midwestgrowkits.com\/products\/sterilized-masters-mix-bag-5-lbs\"\u003e5 LB Sterilized Master's Mix\u003c\/a\u003e. One 5 LB bag inoculates 12–13 Master's Mix bags. Step-by-step walkthrough here: \u003ca href=\"https:\/\/www.midwestgrowkits.com\/blogs\/blog-1-growing-101-more\/how-to-use-grain-spawn-with-master-s-mix-substrate\"\u003eHow to Use Grain Spawn with Master's Mix Substrate\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eExpand to more grain\u003c\/span\u003e — use a portion to inoculate additional sterilized grain (a grain-to-grain transfer) and multiply your spawn before spawning to bulk\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eSpawn a monotub or bulk bed\u003c\/span\u003e — mix into any properly prepared pasteurized or sterilized bulk substrate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor grain-to-grain transfers or any open work, do it in front of a \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003elaminar flow hood or clean-room setup\u003c\/a\u003e. A few minutes under HEPA-filtered air keeps contamination out and dramatically improves your success rate — especially when you're expanding spawn rather than going straight to a sealed Master's Mix bag.\u003c\/p\u003e\n\u003ch3\u003ePink Oyster Growing Characteristics\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eLatin name\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cem\u003ePleurotus djamor\u003c\/em\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eMycelium appearance\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite to pale pink, very fast and aggressive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSpawn-to-substrate ratio\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e~1 part spawn to 3 parts substrate (one 5 LB bag → 12–13 Master's Mix bags)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003ePreferred substrate\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eMaster's Mix, hardwood sawdust + bran, straw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eFruiting temperature\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e65–85°F (warm\/tropical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eDifficulty\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eBeginner-friendly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eUse category\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eGourmet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eGrain Spawn Specifications\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eNet weight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e5 LB advertised (typically fills to ~5.5 LB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eGrain\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003ePrimarily white and red millet with a small amount of milo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eBag\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eUnicorn 10T, 3-mil, 0.22-micron filter patch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eInjection port\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSterilization\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e3-hour autoclave cycle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSterility\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eProduced under HEPA-filtered laminar flow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eShelf life\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e90 days best \/ 120 days refrigerated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSterility \u0026amp; Quality Standards\u003c\/h3\u003e\n\u003cp\u003eEvery bag is produced and inspected at Myco Labs under HEPA-filtered laminar flow, then incubated in a dedicated clean room until fully colonized. Each bag is visually inspected for contamination before it's approved for shipment. If it doesn't look right, it doesn't ship.\u003c\/p\u003e\n\u003ch3\u003eShipping \u0026amp; Handling\u003c\/h3\u003e\n\u003cp\u003eSpawn ships in padded packaging. In summer months (May–September) or to hot-climate destinations, we include a cold pack at no additional cost. Use your spawn promptly for best results; an unopened bag stays at peak viability for about 90 days at room temperature, or up to 120 days refrigerated at 35–40°F. Refrigerate if you're not using it right away.\u003c\/p\u003e\n\u003ch3\u003eRecommended Companion Products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/products\/sterilized-masters-mix-bag-5-lbs\"\u003eSterilized Master's Mix (5 LB)\u003c\/a\u003e — the intended pairing; one spawn bag inoculates 12–13\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003eLaminar Flow Hoods \u0026amp; Clean Room Equipment\u003c\/a\u003e — for contamination-free grain transfers\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/liquid-culture-syringes\"\u003eLiquid Culture Syringes\u003c\/a\u003e — same genetics, ready-to-inject format\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/spawn-bags\"\u003eUninoculated Spawn Bags\u003c\/a\u003e — to colonize your own grain from culture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eIs this ready to use, or do I need to colonize it?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eIt's fully colonized and ready to go. Break it up and mix it directly into sterilized Master's Mix or your bulk substrate of choice — no inoculation, sterilization, or colonization wait on your end.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eHow many Master's Mix blocks will one 5 LB bag inoculate?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eOne 5 LB bag inoculates 12–13 of our 5 LB Sterilized Master's Mix bags at our recommended ratio, turning a single spawn bag into a full block run.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eDo I need a flow hood to use this?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eNot for the simplest workflow — breaking the spawn into a freshly opened Master's Mix bag in a clean, still space works for many growers. But for grain-to-grain transfers or any extended open work, a laminar flow hood or clean-room setup with HEPA-filtered air significantly lowers contamination risk. We carry both in our \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003eflow hood and clean room collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eWhere do your genetics come from?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eOur cultures come from our own in-house master collection at Myco Labs, plus a partnership with one of the largest commercial culture suppliers in Canada and select strains sourced from the UK and Asia. Everything is maintained as first-generation commercial genetics and selected for vigor and true-to-type fruiting.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eHow fresh is it, and how long will it stay viable?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eEvery bag is made fresh at our Illinois lab — never stockpiled for months. An unopened bag stays at peak viability for about 90 days at room temperature, or up to 120 days refrigerated. Refrigerate if you're not using it right away.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eCan I use this in a monotub instead of Master's Mix blocks?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eYes. While these are built for breaking up into sterilized Master's Mix, the colonized grain can be mixed into any properly prepared bulk substrate, including a monotub.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eWhat if my bag arrives contaminated or damaged?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eWe guarantee every bag ships fully colonized and contamination-free. If you receive a contaminated or damaged bag, contact us within 5 days of delivery with a photo and we'll replace it free of charge.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Midwest Grow Kits","offers":[{"title":"Default Title","offer_id":47412454064277,"sku":"POCG","price":29.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Pink_oyster_grain_spawn.jpg?v=1780660258"},{"product_id":"shiitake-colonized-grain-spawn-bag-5-lb","title":"Shiitake Colonized Grain Spawn Bag 5 LB","description":"\u003cstyle\u003e.mgk-product-content .b { font-weight:600 !important; }\u003c\/style\u003e\n\u003cdiv class=\"mgk-product-content\"\u003e\n\u003cp\u003e\u003cspan class=\"b\"\u003eFully colonized Shiitake (\u003cem\u003eLentinula edodes\u003c\/em\u003e) grain spawn, 5 LB\u003c\/span\u003e, grown on our millet-based grain blend in a filtered Unicorn 3T bag. Built on premium first-generation genetics and produced fresh at our Illinois lab — fully colonized before it ships and ready to break up and inoculate the moment it arrives. Shiitake delivers deep, savory umami and a meaty texture that's made it a kitchen staple worldwide. It takes patience — a longer colonization and a browning phase before fruiting — but the rich, restaurant-grade harvest is well worth the wait.\u003c\/p\u003e\n\u003cdiv class=\"mgk-callout mgk-callout-ships\"\u003e\n\u003cspan class=\"b\"\u003e✓ Made Fresh — Ships Same or Next Business Day\u003c\/span\u003e\u003cbr\u003eWe don't stockpile spawn on a shelf for months. Bags are produced on a rolling schedule and held fully colonized, then shipped fresh. \u003c\/div\u003e\n\u003cdiv class=\"mgk-callout mgk-callout-ships\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch3\u003ePremium Genetics, Sourced Worldwide\u003c\/h3\u003e\n\u003cp\u003eStrong genetics are the difference between a reliable commercial run and a disappointing one — so we built our library from the best sources we could find. Our Shiitake spawn starts with our own in-house master culture collection at Myco Labs, refined over years of isolation work, and is expanded through a partnership with \u003cspan class=\"b\"\u003eone of the largest commercial culture suppliers in Canada\u003c\/span\u003e, along with select strains sourced from the \u003cspan class=\"b\"\u003eUK and Asia\u003c\/span\u003e. Every culture is held as first-generation commercial genetics and selected for vigorous, clean colonization and true-to-type fruiting. This is the genetic foundation serious cultivators build a farm on.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Receive\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003e5 LB of fully colonized grain spawn\u003c\/span\u003e — premium first-gen Shiitake (bags are filled generously and typically weigh in above 5 LB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eMillet-based grain blend\u003c\/span\u003e — primarily white and red millet with a small amount of milo; the fine grain gives plenty of inoculation points for fast, even colonization\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eUnicorn 3T bag\u003c\/span\u003e with a 0.22-micron filter patch and self-healing injection port\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003e3-mil construction\u003c\/span\u003e, sterilized in a 3-hour autoclave cycle\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eLab-inspected\u003c\/span\u003e for contamination and produced fresh at Myco Labs (Illinois, USA)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to Use Your Grain Spawn\u003c\/h3\u003e\n\u003cp\u003eThese bags are made to be broken up and mixed directly into sterilized bulk substrate. The most popular method is Master's Mix block production:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eMix into Master's Mix\u003c\/span\u003e — break up the colonized grain and combine it with our \u003ca href=\"https:\/\/www.midwestgrowkits.com\/products\/sterilized-masters-mix-bag-5-lbs\"\u003e5 LB Sterilized Master's Mix\u003c\/a\u003e. One 5 LB bag inoculates 12–13 Master's Mix bags. Step-by-step walkthrough here: \u003ca href=\"https:\/\/www.midwestgrowkits.com\/blogs\/blog-1-growing-101-more\/how-to-use-grain-spawn-with-master-s-mix-substrate\"\u003eHow to Use Grain Spawn with Master's Mix Substrate\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eExpand to more grain\u003c\/span\u003e — use a portion to inoculate additional sterilized grain (a grain-to-grain transfer) and multiply your spawn before spawning to bulk\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eSpawn a monotub or bulk bed\u003c\/span\u003e — mix into any properly prepared pasteurized or sterilized bulk substrate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor grain-to-grain transfers or any open work, do it in front of a \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003elaminar flow hood or clean-room setup\u003c\/a\u003e. A few minutes under HEPA-filtered air keeps contamination out and dramatically improves your success rate — especially when you're expanding spawn rather than going straight to a sealed Master's Mix bag.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/www.midwestgrowkits.com\/blogs\/blog-1-growing-101-more\/how-to-use-grain-spawn-with-master-s-mix-substrate\" style=\"display:block; margin:24px 0; text-align:center;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/How_to_use_Grain_Spawn_Link_final.jpg?v=1781605812\" alt=\"How to use colonized grain spawn with Master's Mix - step-by-step guide\" style=\"max-width:100%; height:auto; border-radius:6px;\" loading=\"lazy\"\u003e\n\u003c\/a\u003e\n\u003ch3\u003eShiitake Growing Characteristics\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eLatin name\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cem\u003eLentinula edodes\u003c\/em\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eMycelium appearance\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite; forms a brown mycelial skin before fruiting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSpawn-to-substrate ratio\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e~1 part spawn to 3 parts substrate (one 5 LB bag → 12–13 Master's Mix bags)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003ePreferred substrate\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eSupplemented hardwood sawdust, Master's Mix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eFruiting temperature\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e55–70°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eDifficulty\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eIntermediate (longer colonization + browning phase)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eUse category\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eGourmet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eGrain Spawn Specifications\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eNet weight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e5 LB advertised (typically fills to ~5.5 LB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eGrain\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003ePrimarily white and red millet with a small amount of milo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eBag\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eUnicorn 3T, 3-mil, 0.22-micron filter patch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eInjection port\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSterilization\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e3-hour autoclave cycle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSterility\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eProduced under HEPA-filtered laminar flow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eShelf life\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e90 days best \/ 120 days refrigerated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSterility \u0026amp; Quality Standards\u003c\/h3\u003e\n\u003cp\u003eEvery bag is produced and inspected at Myco Labs under HEPA-filtered laminar flow, then incubated in a dedicated clean room until fully colonized. Each bag is visually inspected for contamination before it's approved for shipment. If it doesn't look right, it doesn't ship.\u003c\/p\u003e\n\u003ch3\u003eShipping \u0026amp; Handling\u003c\/h3\u003e\n\u003cp\u003eSpawn ships in padded packaging. In summer months (May–September) or to hot-climate destinations, we include a cold pack at no additional cost. Use your spawn promptly for best results; an unopened bag stays at peak viability for about 90 days at room temperature, or up to 120 days refrigerated at 35–40°F. Refrigerate if you're not using it right away.\u003c\/p\u003e\n\u003ch3\u003eRecommended Companion Products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/products\/sterilized-masters-mix-bag-5-lbs\"\u003eSterilized Master's Mix (5 LB)\u003c\/a\u003e — the intended pairing; one spawn bag inoculates 12–13\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003eLaminar Flow Hoods \u0026amp; Clean Room Equipment\u003c\/a\u003e — for contamination-free grain transfers\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/liquid-culture-syringes\"\u003eLiquid Culture Syringes\u003c\/a\u003e — same genetics, ready-to-inject format\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/spawn-bags\"\u003eUninoculated Spawn Bags\u003c\/a\u003e — to colonize your own grain from culture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eIs this ready to use, or do I need to colonize it?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eIt's fully colonized and ready to go. Break it up and mix it directly into sterilized Master's Mix or your bulk substrate of choice — no inoculation, sterilization, or colonization wait on your end.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eHow many Master's Mix blocks will one 5 LB bag inoculate?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eOne 5 LB bag inoculates 12–13 of our 5 LB Sterilized Master's Mix bags at our recommended ratio, turning a single spawn bag into a full block run.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eDo I need a flow hood to use this?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eNot for the simplest workflow — breaking the spawn into a freshly opened Master's Mix bag in a clean, still space works for many growers. But for grain-to-grain transfers or any extended open work, a laminar flow hood or clean-room setup with HEPA-filtered air significantly lowers contamination risk. We carry both in our \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003eflow hood and clean room collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eWhere do your genetics come from?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eOur cultures come from our own in-house master collection at Myco Labs, plus a partnership with one of the largest commercial culture suppliers in Canada and select strains sourced from the UK and Asia. Everything is maintained as first-generation commercial genetics and selected for vigor and true-to-type fruiting.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eHow fresh is it, and how long will it stay viable?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eEvery bag is made fresh at our Illinois lab — never stockpiled for months. An unopened bag stays at peak viability for about 90 days at room temperature, or up to 120 days refrigerated. Refrigerate if you're not using it right away.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eCan I use this in a monotub instead of Master's Mix blocks?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eYes. While these are built for breaking up into sterilized Master's Mix, the colonized grain can be mixed into any properly prepared bulk substrate, including a monotub.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eWhat if my bag arrives contaminated or damaged?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eWe guarantee every bag ships fully colonized and contamination-free. If you receive a contaminated or damaged bag, contact us within 5 days of delivery with a photo and we'll replace it free of charge.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Midwest Grow Kits","offers":[{"title":"Default Title","offer_id":47419002519701,"sku":"SHCG","price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Shiitake_mushroom_colonized_grain.jpg?v=1780941343"},{"product_id":"chestnut-colonized-grain-spawn-bag-5-lb","title":"Chestnut Colonized Grain Spawn Bag 5 LB","description":"\u003cstyle\u003e.mgk-product-content .b { font-weight:600 !important; }\u003c\/style\u003e\n\u003cdiv class=\"mgk-product-content\"\u003e\n\u003cp\u003e\u003cspan class=\"b\"\u003eFully colonized Chestnut (\u003cem\u003ePholiota adiposa\u003c\/em\u003e) grain spawn, 5 LB\u003c\/span\u003e, grown on our millet-based grain blend in a filtered Unicorn 3T bag. Built on premium first-generation genetics and produced fresh at our Illinois lab — fully colonized before it ships and ready to break up and inoculate the moment it arrives. Chestnut fruits in handsome clusters of golden-brown caps with a crunchy texture and a sweet, nutty flavor. Unlike the delicate oysters, it stores well after harvest — a real advantage for market growers and restaurant accounts.\u003c\/p\u003e\n\u003cdiv class=\"mgk-callout mgk-callout-ships\"\u003e\n\u003cspan class=\"b\"\u003e✓ Made Fresh — Ships Same or Next Business Day\u003c\/span\u003e\u003cbr\u003eWe don't stockpile spawn on a shelf for months. Bags are produced on a rolling schedule and held fully colonized, then shipped fresh. \u003c\/div\u003e\n\u003cdiv class=\"mgk-callout mgk-callout-ships\"\u003e\u003c\/div\u003e\n\u003ch3\u003ePremium Genetics, Sourced Worldwide\u003c\/h3\u003e\n\u003cp\u003eStrong genetics are the difference between a reliable commercial run and a disappointing one — so we built our library from the best sources we could find. Our Chestnut spawn starts with our own in-house master culture collection at Myco Labs, refined over years of isolation work, and is expanded through a partnership with \u003cspan class=\"b\"\u003eone of the largest commercial culture suppliers in Canada\u003c\/span\u003e, along with select strains sourced from the \u003cspan class=\"b\"\u003eUK and Asia\u003c\/span\u003e. Every culture is held as first-generation commercial genetics and selected for vigorous, clean colonization and true-to-type fruiting. This is the genetic foundation serious cultivators build a farm on.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Receive\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003e5 LB of fully colonized grain spawn\u003c\/span\u003e — premium first-gen Chestnut (bags are filled generously and typically weigh in above 5 LB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eMillet-based grain blend\u003c\/span\u003e — primarily white and red millet with a small amount of milo; the fine grain gives plenty of inoculation points for fast, even colonization\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eUnicorn 10T bag\u003c\/span\u003e with a 0.22-micron filter patch and self-healing injection port\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003e3-mil construction\u003c\/span\u003e, sterilized in a 3-hour autoclave cycle\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eLab-inspected\u003c\/span\u003e for contamination and produced fresh at Myco Labs (Illinois, USA)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to Use Your Grain Spawn\u003c\/h3\u003e\n\u003cp\u003eThese bags are made to be broken up and mixed directly into sterilized bulk substrate. The most popular method is Master's Mix block production:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eMix into Master's Mix\u003c\/span\u003e — break up the colonized grain and combine it with our \u003ca href=\"https:\/\/www.midwestgrowkits.com\/products\/sterilized-masters-mix-bag-5-lbs\"\u003e5 LB Sterilized Master's Mix\u003c\/a\u003e. One 5 LB bag inoculates 12–13 Master's Mix bags. Step-by-step walkthrough here: \u003ca href=\"https:\/\/www.midwestgrowkits.com\/blogs\/blog-1-growing-101-more\/how-to-use-grain-spawn-with-master-s-mix-substrate\"\u003eHow to Use Grain Spawn with Master's Mix Substrate\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eExpand to more grain\u003c\/span\u003e — use a portion to inoculate additional sterilized grain (a grain-to-grain transfer) and multiply your spawn before spawning to bulk\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eSpawn a monotub or bulk bed\u003c\/span\u003e — mix into any properly prepared pasteurized or sterilized bulk substrate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor grain-to-grain transfers or any open work, do it in front of a \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003elaminar flow hood or clean-room setup\u003c\/a\u003e. A few minutes under HEPA-filtered air keeps contamination out and dramatically improves your success rate — especially when you're expanding spawn rather than going straight to a sealed Master's Mix bag.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/www.midwestgrowkits.com\/blogs\/blog-1-growing-101-more\/how-to-use-grain-spawn-with-master-s-mix-substrate\" style=\"display:block; margin:24px 0; text-align:center;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/How_to_use_Grain_Spawn_Link_final.jpg?v=1781605812\" alt=\"How to use colonized grain spawn with Master's Mix - step-by-step guide\" style=\"max-width:100%; height:auto; border-radius:6px;\" loading=\"lazy\"\u003e\n\u003c\/a\u003e\n\u003ch3\u003eChestnut Growing Characteristics\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eLatin name\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cem\u003ePholiota adiposa\u003c\/em\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eMycelium appearance\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite to pale tan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSpawn-to-substrate ratio\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e~1 part spawn to 3 parts substrate (one 5 LB bag → 12–13 Master's Mix bags)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003ePreferred substrate\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eSupplemented hardwood sawdust, Master's Mix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eFruiting temperature\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e50–65°F (cooler-loving)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eDifficulty\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eIntermediate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eUse category\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eGourmet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eGrain Spawn Specifications\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eNet weight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e5 LB advertised (typically fills to ~5.5 LB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eGrain\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003ePrimarily white and red millet with a small amount of milo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eBag\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eUnicorn 10T, 3-mil, 0.22-micron filter patch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eInjection port\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSterilization\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e3-hour autoclave cycle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSterility\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eProduced under HEPA-filtered laminar flow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eShelf life\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e90 days best \/ 120 days refrigerated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSterility \u0026amp; Quality Standards\u003c\/h3\u003e\n\u003cp\u003eEvery bag is produced and inspected at Myco Labs under HEPA-filtered laminar flow, then incubated in a dedicated clean room until fully colonized. Each bag is visually inspected for contamination before it's approved for shipment. If it doesn't look right, it doesn't ship.\u003c\/p\u003e\n\u003ch3\u003eShipping \u0026amp; Handling\u003c\/h3\u003e\n\u003cp\u003eSpawn ships in padded packaging. In summer months (May–September) or to hot-climate destinations, we include a cold pack at no additional cost. Use your spawn promptly for best results; an unopened bag stays at peak viability for about 90 days at room temperature, or up to 120 days refrigerated at 35–40°F. Refrigerate if you're not using it right away.\u003c\/p\u003e\n\u003ch3\u003eRecommended Companion Products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/products\/sterilized-masters-mix-bag-5-lbs\"\u003eSterilized Master's Mix (5 LB)\u003c\/a\u003e — the intended pairing; one spawn bag inoculates 12–13\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003eLaminar Flow Hoods \u0026amp; Clean Room Equipment\u003c\/a\u003e — for contamination-free grain transfers\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/liquid-culture-syringes\"\u003eLiquid Culture Syringes\u003c\/a\u003e — same genetics, ready-to-inject format\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/spawn-bags\"\u003eUninoculated Spawn Bags\u003c\/a\u003e — to colonize your own grain from culture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eIs this ready to use, or do I need to colonize it?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eIt's fully colonized and ready to go. Break it up and mix it directly into sterilized Master's Mix or your bulk substrate of choice — no inoculation, sterilization, or colonization wait on your end.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eHow many Master's Mix blocks will one 5 LB bag inoculate?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eOne 5 LB bag inoculates 12–13 of our 5 LB Sterilized Master's Mix bags at our recommended ratio, turning a single spawn bag into a full block run.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eDo I need a flow hood to use this?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eNot for the simplest workflow — breaking the spawn into a freshly opened Master's Mix bag in a clean, still space works for many growers. But for grain-to-grain transfers or any extended open work, a laminar flow hood or clean-room setup with HEPA-filtered air significantly lowers contamination risk. We carry both in our \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003eflow hood and clean room collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eWhere do your genetics come from?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eOur cultures come from our own in-house master collection at Myco Labs, plus a partnership with one of the largest commercial culture suppliers in Canada and select strains sourced from the UK and Asia. Everything is maintained as first-generation commercial genetics and selected for vigor and true-to-type fruiting.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eHow fresh is it, and how long will it stay viable?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eEvery bag is made fresh at our Illinois lab — never stockpiled for months. An unopened bag stays at peak viability for about 90 days at room temperature, or up to 120 days refrigerated. Refrigerate if you're not using it right away.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eCan I use this in a monotub instead of Master's Mix blocks?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eYes. While these are built for breaking up into sterilized Master's Mix, the colonized grain can be mixed into any properly prepared bulk substrate, including a monotub.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eWhat if my bag arrives contaminated or damaged?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eWe guarantee every bag ships fully colonized and contamination-free. If you receive a contaminated or damaged bag, contact us within 5 days of delivery with a photo and we'll replace it free of charge.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Midwest Grow Kits","offers":[{"title":"Default Title","offer_id":47419032567957,"sku":"CMGS","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Chestnut_grain_sapwn.jpg?v=1780941938"},{"product_id":"pioppino-colonized-grain-spawn-bag-5-lb","title":"Pioppino Colonized Grain Spawn Bag 5 LB","description":"\u003cstyle\u003e.mgk-product-content .b { font-weight:600 !important; }\u003c\/style\u003e\n\u003cdiv class=\"mgk-product-content\"\u003e\n\u003cp\u003e\u003cspan class=\"b\"\u003eFully colonized Pioppino (\u003cem\u003eAgrocybe aegerita\u003c\/em\u003e) grain spawn, 5 LB\u003c\/span\u003e, grown on our millet-based grain blend in a filtered Unicorn 3T bag. Built on premium first-generation genetics and produced fresh at our Illinois lab — fully colonized before it ships and ready to break up and inoculate the moment it arrives. Pioppino fruits in elegant clusters of bronze-brown caps on crisp white stems, with a rich, nutty, peppery flavor and a firm texture that holds up beautifully in the pan. A long-time favorite of chefs, it also stores better than most gourmet varieties.\u003c\/p\u003e\n\u003cdiv class=\"mgk-callout mgk-callout-ships\"\u003e\n\u003cspan class=\"b\"\u003e✓ Made Fresh — Ships Same or Next Business Day\u003c\/span\u003e\u003cbr\u003eWe don't stockpile spawn on a shelf for months. Bags are produced on a rolling schedule and held fully colonized, then shipped fresh. \u003c\/div\u003e\n\u003cdiv class=\"mgk-callout mgk-callout-ships\"\u003e\u003c\/div\u003e\n\u003ch3\u003ePremium Genetics, Sourced Worldwide\u003c\/h3\u003e\n\u003cp\u003eStrong genetics are the difference between a reliable commercial run and a disappointing one — so we built our library from the best sources we could find. Our Pioppino spawn starts with our own in-house master culture collection at Myco Labs, refined over years of isolation work, and is expanded through a partnership with \u003cspan class=\"b\"\u003eone of the largest commercial culture suppliers in Canada\u003c\/span\u003e, along with select strains sourced from the \u003cspan class=\"b\"\u003eUK and Asia\u003c\/span\u003e. Every culture is held as first-generation commercial genetics and selected for vigorous, clean colonization and true-to-type fruiting. This is the genetic foundation serious cultivators build a farm on.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Receive\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003e5 LB of fully colonized grain spawn\u003c\/span\u003e — premium first-gen Pioppino (bags are filled generously and typically weigh in above 5 LB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eMillet-based grain blend\u003c\/span\u003e — primarily white and red millet with a small amount of milo; the fine grain gives plenty of inoculation points for fast, even colonization\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eUnicorn 10T bag\u003c\/span\u003e with a 0.22-micron filter patch and self-healing injection port\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003e3-mil construction\u003c\/span\u003e, sterilized in a 3-hour autoclave cycle\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eLab-inspected\u003c\/span\u003e for contamination and produced fresh at Myco Labs (Illinois, USA)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to Use Your Grain Spawn\u003c\/h3\u003e\n\u003cp\u003eThese bags are made to be broken up and mixed directly into sterilized bulk substrate. The most popular method is Master's Mix block production:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eMix into Master's Mix\u003c\/span\u003e — break up the colonized grain and combine it with our \u003ca href=\"https:\/\/www.midwestgrowkits.com\/products\/sterilized-masters-mix-bag-5-lbs\"\u003e5 LB Sterilized Master's Mix\u003c\/a\u003e. One 5 LB bag inoculates 12–13 Master's Mix bags. Step-by-step walkthrough here: \u003ca href=\"https:\/\/www.midwestgrowkits.com\/blogs\/blog-1-growing-101-more\/how-to-use-grain-spawn-with-master-s-mix-substrate\"\u003eHow to Use Grain Spawn with Master's Mix Substrate\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eExpand to more grain\u003c\/span\u003e — use a portion to inoculate additional sterilized grain (a grain-to-grain transfer) and multiply your spawn before spawning to bulk\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eSpawn a monotub or bulk bed\u003c\/span\u003e — mix into any properly prepared pasteurized or sterilized bulk substrate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor grain-to-grain transfers or any open work, do it in front of a \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003elaminar flow hood or clean-room setup\u003c\/a\u003e. A few minutes under HEPA-filtered air keeps contamination out and dramatically improves your success rate — especially when you're expanding spawn rather than going straight to a sealed Master's Mix bag.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/www.midwestgrowkits.com\/blogs\/blog-1-growing-101-more\/how-to-use-grain-spawn-with-master-s-mix-substrate\" style=\"display:block; margin:24px 0; text-align:center;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/How_to_use_Grain_Spawn_Link_final.jpg?v=1781605812\" alt=\"How to use colonized grain spawn with Master's Mix - step-by-step guide\" style=\"max-width:100%; height:auto; border-radius:6px;\" loading=\"lazy\"\u003e\n\u003c\/a\u003e\n\u003ch3\u003ePioppino Growing Characteristics\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eLatin name\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cem\u003eAgrocybe aegerita\u003c\/em\u003e (syn. \u003cem\u003eCyclocybe aegerita\u003c\/em\u003e)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eMycelium appearance\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite, cottony, becoming slightly tomentose\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSpawn-to-substrate ratio\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e~1 part spawn to 3 parts substrate (one 5 LB bag → 12–13 Master's Mix bags)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003ePreferred substrate\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eMaster's Mix, supplemented hardwood sawdust\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eFruiting temperature\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e55–65°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eDifficulty\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eIntermediate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eUse category\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eGourmet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eGrain Spawn Specifications\u003c\/h3\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eNet weight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e5 LB advertised (typically fills to ~5.5 LB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eGrain\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003ePrimarily white and red millet with a small amount of milo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eBag\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eUnicorn 10T, 3-mil, 0.22-micron filter patch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eInjection port\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-healing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSterilization\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e3-hour autoclave cycle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eSterility\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eProduced under HEPA-filtered laminar flow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"b\"\u003eShelf life\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e90 days best \/ 120 days refrigerated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSterility \u0026amp; Quality Standards\u003c\/h3\u003e\n\u003cp\u003eEvery bag is produced and inspected at Myco Labs under HEPA-filtered laminar flow, then incubated in a dedicated clean room until fully colonized. Each bag is visually inspected for contamination before it's approved for shipment. If it doesn't look right, it doesn't ship.\u003c\/p\u003e\n\u003ch3\u003eShipping \u0026amp; Handling\u003c\/h3\u003e\n\u003cp\u003eSpawn ships in padded packaging. In summer months (May–September) or to hot-climate destinations, we include a cold pack at no additional cost. Use your spawn promptly for best results; an unopened bag stays at peak viability for about 90 days at room temperature, or up to 120 days refrigerated at 35–40°F. Refrigerate if you're not using it right away.\u003c\/p\u003e\n\u003ch3\u003eRecommended Companion Products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/products\/sterilized-masters-mix-bag-5-lbs\"\u003eSterilized Master's Mix (5 LB)\u003c\/a\u003e — the intended pairing; one spawn bag inoculates 12–13\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003eLaminar Flow Hoods \u0026amp; Clean Room Equipment\u003c\/a\u003e — for contamination-free grain transfers\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/liquid-culture-syringes\"\u003eLiquid Culture Syringes\u003c\/a\u003e — same genetics, ready-to-inject format\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/spawn-bags\"\u003eUninoculated Spawn Bags\u003c\/a\u003e — to colonize your own grain from culture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eIs this ready to use, or do I need to colonize it?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eIt's fully colonized and ready to go. Break it up and mix it directly into sterilized Master's Mix or your bulk substrate of choice — no inoculation, sterilization, or colonization wait on your end.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eHow many Master's Mix blocks will one 5 LB bag inoculate?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eOne 5 LB bag inoculates 12–13 of our 5 LB Sterilized Master's Mix bags at our recommended ratio, turning a single spawn bag into a full block run.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eDo I need a flow hood to use this?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eNot for the simplest workflow — breaking the spawn into a freshly opened Master's Mix bag in a clean, still space works for many growers. But for grain-to-grain transfers or any extended open work, a laminar flow hood or clean-room setup with HEPA-filtered air significantly lowers contamination risk. We carry both in our \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/flow-hoods-clean-room\"\u003eflow hood and clean room collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eWhere do your genetics come from?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eOur cultures come from our own in-house master collection at Myco Labs, plus a partnership with one of the largest commercial culture suppliers in Canada and select strains sourced from the UK and Asia. Everything is maintained as first-generation commercial genetics and selected for vigor and true-to-type fruiting.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eHow fresh is it, and how long will it stay viable?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eEvery bag is made fresh at our Illinois lab — never stockpiled for months. An unopened bag stays at peak viability for about 90 days at room temperature, or up to 120 days refrigerated. Refrigerate if you're not using it right away.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eCan I use this in a monotub instead of Master's Mix blocks?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eYes. While these are built for breaking up into sterilized Master's Mix, the colonized grain can be mixed into any properly prepared bulk substrate, including a monotub.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"mgk-faq\"\u003e\n\u003csummary\u003e\u003cspan class=\"b\"\u003eWhat if my bag arrives contaminated or damaged?\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eWe guarantee every bag ships fully colonized and contamination-free. If you receive a contaminated or damaged bag, contact us within 5 days of delivery with a photo and we'll replace it free of charge.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Midwest Grow Kits","offers":[{"title":"Default Title","offer_id":47429845549205,"sku":"PPCG","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Change_the_label_so_it_says_Pi_Nano_Banana_2_43989.png?v=1781113903"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/collections\/Gourmet_shoby.jpg?v=1783596198","url":"https:\/\/www.midwestgrowkits.com\/collections\/gourmet-mushrooms.oembed","provider":"Midwest Grow Kits","version":"1.0","type":"link"}