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Midwest's Select Bulk Substrate Casing Mix - 5 pounds

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(194 Reviews)
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Item #: SBC5 -
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Price: $18.00
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(SPRING SALE!) Our top selling product every month! Midwest's Premium Select Bulk Substrate is the perfect combination of Coco Coir, Vermiculite, Hydrated Lime, Gypsum, ph buffers, ph stabilizers,...

(SPRING SALE!) Our top selling product every month! Midwest's Premium Select Bulk Substrate is the perfect combination of Coco Coir, Vermiculite, Hydrated Lime, Gypsum, ph buffers, ph stabilizers, mineral water and a few other choice ingredients. Our select casing comes fully hydrated and pasteurized and is ready to use right out of the bag! Use this along with a fully colonized spawn bag to start your bulk growing experience! Each 5 pound bag comes fully sealed and can be used right away or...

Bulk Spawn Growing & Casing Kit: New Dome Edition

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(3 Reviews)
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Item #: BLKD -
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Price: $59.99
Retail: $69.99
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(SPRING SALE!) Our Bulk Monotub Dome Kit is back with new triple vent acrylic dome and 4X thicker heavy duty tray! Turn your fully colonized spawn bags or Grain Jars (sold separately) into a Bulk...

(SPRING SALE!) Our Bulk Monotub Dome Kit is back with new triple vent acrylic dome and 4X thicker heavy duty tray! Turn your fully colonized spawn bags or Grain Jars (sold separately) into a Bulk harvest fast and easy using this kit. Growing mushrooms in bulk has never been easier! Once you have mastered growing in jars, this is the next step in growing! Simply break them up and mix with our perfected Select Bulk casing mix in the heavy duty tray provided. Typically this is an advanced growing...

Classic Bulk Spawn Growing & Casing Kit

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(46 Reviews)
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Item #: BLK2 -
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Price: $64.99
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Turn your fully colonized spawn bags (sold separately) into a Bulk harvest fast and easy using our Premium Bulk casing kit. Growing mushrooms in bulk has never been easier! Once you have mastered...

Turn your fully colonized spawn bags (sold separately) into a Bulk harvest fast and easy using our Premium Bulk casing kit. Growing mushrooms in bulk has never been easier! Once you have mastered growing in jars, this is the next step in growing! Simply break them up and mix with our perfected Select Bulk casing mix in the grow chamber provided. Typically this is an advanced growing method, but we have made growing easy by providing you with step by step instructions & everything you need to...

Midwest's Select Bulk Substrate Casing Mix - 30 Pounds (BULK 6-PACK)

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(2 Reviews)
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Item #: SBC6 -
Availability: In Stock
Price: $89.00
Retail: $120.00
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Buy in Bulk and save 25% on 30 pounds of our our top selling product every month!  Midwest's Premium Select Bulk Substrate is the perfect combination of Coco Coir, Vermiculite, Hydrated Lime,...

Buy in Bulk and save 25% on 30 pounds of our our top selling product every month!  Midwest's Premium Select Bulk Substrate is the perfect combination of Coco Coir, Vermiculite, Hydrated Lime, Gypsum, ph buffers, ph stabilizers, mineral water and a few other choice ingredients. Our select casing comes fully hydrated and pasteurized and is ready to use right out of the bag! Use this along with a fully colonized spawn bag to start your bulk growing experience! Each 5 pound bag comes fully...

Midwest's Wild Horse Bulk Substrate Manure Booster

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(24 Reviews)
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Item #: HRS1 -
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Price: $6.00
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Midwest's Wild Horse Bulk Substrate Booster is the easiest way to supercharge your bulk grow! We've used manure for years but nothing comes close to the performance of this kind. In fact, its so...

Midwest's Wild Horse Bulk Substrate Booster is the easiest way to supercharge your bulk grow! We've used manure for years but nothing comes close to the performance of this kind. In fact, its so potent you only need to add 1 pound for every 10 pounds of our select casing mix to see results! Increases Mushroom size, increases potency & flavor! While the manure may be the star of the show, we have carefully selected the following additional ingredients in our mix, each complimenting the manure...

24 oz Premium Super Quick-Colonizing 5-grain Jar

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(15 Reviews)
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Item #: PQC7 -
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Price: $6.99
Retail: $9.00
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(ON SALE!) Midwest Grow Kits is excited to have our 24oz Super-Quick-colonizing 5-grain jars back in stock! This combination is prepared in a new type of glass jar now available in a tapered 24oz...

(ON SALE!) Midwest Grow Kits is excited to have our 24oz Super-Quick-colonizing 5-grain jars back in stock! This combination is prepared in a new type of glass jar now available in a tapered 24oz size. This new design allows the cake to simply slide out when finished. These jars have been known to colonize in as quickly as 16-21 days! For bulk casing grows use 2 or 3 jars per 5 lbs of casing mix. Each Jar requires 3-4 cc's of spores ...

All-in-One Bulk Monobag Kit

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(25 Reviews)
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Item #: BLK5 -
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Price: $29.99
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Growing in Bulk has never been easier! This simple setup will teach you the basics of growing from grain spawn to a bulk substrate all in two easy steps! Simply inject your favorite spores in the...

Growing in Bulk has never been easier! This simple setup will teach you the basics of growing from grain spawn to a bulk substrate all in two easy steps! Simply inject your favorite spores in the 30oz 5-Grain Jar, let it fully colonize (turn white). The next step is to break up the grain and mix it with the bulk substrate (Select Casing Mix) in the bag. The 8mm heavy duty gusseted polybag provides the perfect environment to grow. Once you mix them together, let it sit for 10-14 days and you...

Midwest's Black Cow Manure Casing Mix - 5 lbs

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(44 Reviews)
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Item #: BC1 -
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Price: $20.00
Retail: $25.00
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**NEW** Our new Black Cow Manure based casing Substrate may just be our best creation yet! The manure used in this casing mix is from organic grain fed dairy cows. The composting process from this...

**NEW** Our new Black Cow Manure based casing Substrate may just be our best creation yet! The manure used in this casing mix is from organic grain fed dairy cows. The composting process from this manure is carefully monitored by high tech equipment. The manure is turned into specific size rows and water is added weekly to create the perfect environment. Beneficial microbes break down the manure reaching temperatures of 155 degrees. The manure compost is carefully mixed with Coir, vermiculite,...

3-Pack Premium 24 Oz Super-Quick-Colonizing 5-grain Jar (24oz)

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(122 Reviews)
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Item #: PQC3 -
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Price: $19.99
Retail: $23.00
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(LIMITED TIME SALE!) Midwest Grow Kits is excited to have our 24oz Super-Quick-colonizing 5-grain jars back in stock! This combination is prepared in a new type of glass jar now available in a...

(LIMITED TIME SALE!) Midwest Grow Kits is excited to have our 24oz Super-Quick-colonizing 5-grain jars back in stock! This combination is prepared in a new type of glass jar now available in a tapered 24oz size. This new design allows the cake to simply slide out when finished. These jars have been known to colonize in as quickly as 16-21 days! For bulk casing grows use 2 or 3 jars per 5 lbs of casing mix. Each Jar requires 3-4 cc's of spores ...

Premium Quick-Colonizing 5-grain Jar (30oz)

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(53 Reviews)
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Item #: PQC2 -
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Price: $9.00
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(New!) Midwest Grow Kits is excited to release our new formula of our quick-colonizing 5-grain blend featuring organic food grade grains! This new combination is available in a new 32oz wide mouth...

(New!) Midwest Grow Kits is excited to release our new formula of our quick-colonizing 5-grain blend featuring organic food grade grains! This new combination is available in a new 32oz wide mouth jar, filled to 30oz. With a germination rate of over 97% in recent tests, these jars have been known to colonize in as quickly as 18-23 days from spores and 10-14 days from liquid culture! Each jar contains 30 ounces of nutrient-enriched organic rye berries and a mixture of Organic White and Red...

3-Pack Premium Quick-Colonizing 5-grain Jar (30oz)

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(67 Reviews)
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Item #: PQC9 -
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Price: $23.99
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(APRIL SALE!)  Midwest Grow Kits is excited to release our new formula of our quick-colonizing 5-grain blend featuring organic food grade grains! This new combination is available in a new 32oz...

(APRIL SALE!)  Midwest Grow Kits is excited to release our new formula of our quick-colonizing 5-grain blend featuring organic food grade grains! This new combination is available in a new 32oz wide mouth jar, filled to 30oz. With a germination rate of over 97% in recent tests, these jars have been known to colonize in as quickly as 18-23 days from spores and 10-14 days from liquid culture! 3 Jars which each contain 30 ounces of nutrient-enriched organic rye berries and a mixture of...

36 oz Premium Organic Rye Shake Jar

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(19 Reviews)
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Item #: RS1 -
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Price: $8.00
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(ON SALE!)  We designed our brand new 36oz Rye Shake Jars from the ground up based on years of trial and error and customer feedback. We asked "What would be the perfect glass jar for growing...

(ON SALE!)  We designed our brand new 36oz Rye Shake Jars from the ground up based on years of trial and error and customer feedback. We asked "What would be the perfect glass jar for growing Rye grain spawn?" Nothing existed so we sought out different glass factories and ended up designing a custom mold for what we think is the perfect jar. We guarantee you've seen nothing like this before! Custom made 36oz Wide Mouth Jars feature: 36oz size - A large capacity jar for bulk growingWide...

Mushroom Bulk Casing & Bulk Substrate

When you are ready to start growing in bulk, our mushroom bulk casing bags and kits are the perfect solution. Our bags of casing mix for mushrooms make growing in bulk easier than ever!

Our select mushroom casing comes fully hydrated and pasteurized, so they are ready to use right out of the bag. The mushroom bulk substrate is the next step to take after you’ve mastered growing in jars. If you grab one of our bulk substrate kits, you’ll have everything you need to create a mushroom harvest paradise.

Here you’ll also find our manure bag mixes, our most effective creation to date. Our mushroom cultivation supplies increase mushroom size, potency, and flavor. If you want to get the most out of your growing, you’ll need the best products and equipment. Midwest Grow Kits has you covered!