Sterilized Master's Mix Bag 5 lbs
Sterilized Master's Mix Bag 5 lbs is backordered and will ship as soon as it is back in stock.
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Sterilized Master's Mix Bag 5 lbs
Description
Description
Sterilized Master’s Mix Bag – 5 lbs
Ready-to-Inoculate | 100% Contamination-Free | Trusted by Commercial Growers
Grow nearly 90% of gourmet and medicinal mushrooms with ease using our Sterilized Master’s Mix—the same optimized blend used in our professional grow blocks. Pre-hydrated and pH-balanced for peak performance, this 5lb bag is pressure sterilized at 18 PSI for 2.5 hours, ensuring a completely contaminant-free substrate.
Just mix with your favorite grain spawn and watch your mycelium thrive. Ideal for lion’s mane, oyster, chestnut, and many other wood-loving varieties.
Key Features:
- 5lb Master’s Mix Substrate (optimized hardwood sawdust and soy hull blend)
- Sterilized in 0.5 Micron 14A Filter Bag
- Ready to Use – no prep needed
- Heat-Sealed & Pressure Sterilized at 18 PSI for 2.5 hours
- Perfect Moisture & pH for Optimal Mycelium Growth
- Great for lion’s mane, oysters, pioppino, chestnut, and more
For bulk orders of 5 bags or more, email us for wholesale pricing.
A sterilized bag of Master's Mix is a nutrient-rich, fully sterilized substrate made from hardwood sawdust and soy hulls, designed to be inoculated directly with colonized grain spawn in a sterile environment. Unlike Coir based bulk substrate like our Select Bulk Casing, which are used in non-sterile conditions as a mix in a tub or top casing layer, Master's Mix is not meant to be exposed to open air or mixed in unsterile tubs. Doing so increases the risk of contamination and defeats the purpose of sterilization. Instead, add your grain spawn directly into the sealed bag using a sterile technique, allow full colonization, and then fruit the mushrooms by cutting open the bag or transferring the colonized block to a clean fruiting chamber.
Let customers speak for us
Ive ordered upwards of 50 bags of this substrate and only had 1 issue so its safe to say this is a quality product every bag has usherd in a succesful flush of my favorit strains so buy it
I’ve used several heating/seedling mats over the years and this beats them all. Great temperature adjustability. Like most heating mats a dish cloth between the mat and tub helps. A heavier full tub will run a little hotter than an empty/light tub. A great investment…especially if you live in colder climates
I love these for the value ! You cannot go wrong with these 32oz ready to use 5-grain jars. I’d make them myself but there’s a few ingredients, time for pasteurization and then equipment . Again ! VALUE! It’s here! Love em!
It's doing very well as is my spawn bag that inoculated a few days before them I'm excited to see how it all turns out.
Thank you all for making good products I'll recommend on the other folks.
I have 6 1/2 pint jars and all of them came unsterile ik there unsterile because I have a uvc light and a pressure cooker and they still came out contaminated my syringes I got are plyable too and still my stuff was contaminated I need another couple of jars
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Get a good whiff when you open
I started this project back in July and started seeing promising pins around the end of August. I’m very new to the whole procedure, but super content with the product outcome. Still cropping caps 4.5 weeks after the first harvest. Thanks for all the educational support, it’s well organized on the “learn” dropdown.
I can't pass up a new way to get more mushies in my diet. I didnt really have any expectations on this as I am not a fan of Ryze and some other instant mushroom coffees but this really blew me away! I brewed some this morning and the flavor of this specific roast is very very good. I literally cannot taste a hint of the mushrooms! From my guess looking at the beans the mushrooms are freeze dried and super fine. Now I just need K-Cups and larger bags! I will be adding this to my future orders!
Thank you for selling me the most awesome mushroom growing Kit! Easy to assemble- awesome setvup!
Got the bags last week and injected them. Already seeing growth. Thanks.
giving a five because Midwestgrowkits.com is so good to me, but these were misdelivered in the mail. Luckily the neighbors brought the items back, but had a few cold nights. Im hoping there all good, starting new projects before winter is here. All year Midwestgrowkits.com made my needs were met. Can't wait till next year and spring heat returns. Thanks to everyone there, recommend 👍 💯
These are really cool! Long term storage of your favorite genetics without having to keep doing dish transfers. Midwest Grow Kits just has the best quality of everything!
Perfect agar! Great job on agar quality, plate seal, and overall packaging. Many other vendors don’t seal and package well and the agar can start to lose volume and arrive in bad shape. These are my new favorite.
Great customer service, all products are sterilized ,I've been having great results with no contamination
