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The Original Rye Spawn Bags

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(266 Reviews)
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(New & Improved Recipe!)   Midwest Grow Kit's Organic Rye Berry spawn bags are a true classic for mushroom growing since the 70's. Rye is notoriously known for being a difficult grain to...

(New & Improved Recipe!)   Midwest Grow Kit's Organic Rye Berry spawn bags are a true classic for mushroom growing since the 70's. Rye is notoriously known for being a difficult grain to prepare due to its multiple shell layers and ability to protect itself from full sterilization. On the flip-side, Rye grain has one of the highest nitrogen levels in the grain family, which helps prolong your grow and achieve better 2nd and 3rd flushes. You’ll see many vendors selling & promoting grain...

Premium 5-Grain Spawn Bags

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(449 Reviews)
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(New & Improved Recipe!)  Over 10 years ago we introduced the new organic 5-Grain Spawn Bags. We are constantly growing and testing these bags and making sure what you buy today is the best...

(New & Improved Recipe!)  Over 10 years ago we introduced the new organic 5-Grain Spawn Bags. We are constantly growing and testing these bags and making sure what you buy today is the best they have ever been. In March of 2022 we improved our bags again by using only the best organic food grade grain available and updating many parts of the production process including: Super clean organic cereal grains eliminate residues and starches. New grain hydrating process and drying stations to...

All-in-One Mushroom Grow Bag (4 lbs) for Manure Loving Mushrooms

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(182 Reviews)
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If you're short on space but still want to cultivate your favorite mushrooms, our All-in-One Mushroom Grow Bags are the perfect solution! With our innovative bags, you can experience the...

If you're short on space but still want to cultivate your favorite mushrooms, our All-in-One Mushroom Grow Bags are the perfect solution! With our innovative bags, you can experience the satisfaction of growing your own mushrooms without the need for tubs or greenhouses. Using our bags is simple: inject 5cc of your spores or liquid culture, wait 15-25 days for colonization, then break up the colonized grain and shake the bag. Once the bag re-colonizes, your mushrooms will start growing...

Deluxe Spawn Bag Growing and Casing Kit

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(101 Reviews)
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Midwest Grow Kit's Deluxe Spawn Bag Growing and Casing kit includes everything you need to start your Bulk spawn bag growing experience! Start by injecting your favorite spores in the spawn bags or...

Midwest Grow Kit's Deluxe Spawn Bag Growing and Casing kit includes everything you need to start your Bulk spawn bag growing experience! Start by injecting your favorite spores in the spawn bags or jars and incubate them for 3-4 weeks. Next, break them up after they are fully colonized and mix with the included casing mix. Allow to re-colonize for 7-10 days and then watch as it turns into a "field of shrooms" The combination of our specially formulated 5-Grain Spawn bags/jars, self-healing...

Unicorn Medium Spawn Bags (50-Pack) 10T 0.2 Micron Filter

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50-Pack Medium (Holds 3-4 pounds of hydrated grain) This side-gusseted medium sized, breathable bag gives a sturdy stand-up bag after filling and a strong bottom seal. We manufacture it with...

50-Pack Medium (Holds 3-4 pounds of hydrated grain) This side-gusseted medium sized, breathable bag gives a sturdy stand-up bag after filling and a strong bottom seal. We manufacture it with equipment we designed and with proprietary additives, Unicorn Bags are pliable at any temperature as well as after sterilization. The bag opening is designed for easy sealing and the bag’s bottom seal can withstand agitation. Type: Gussetted Material: 3.0 Mil Polypropylene Bag Size: 5″ X 4 X 18″ Filter...

Unicorn Large Spawn Bags (50-Pack) 3T 0.2 Micron Filter

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50-Pack Large (Holds 5-6 pounds) These are the standard gourmet Large size that hold 5-6 pounds of substrate. Breathable bag gives a sturdy stand-up bag after filling and a strong bottom seal. We...

50-Pack Large (Holds 5-6 pounds) These are the standard gourmet Large size that hold 5-6 pounds of substrate. Breathable bag gives a sturdy stand-up bag after filling and a strong bottom seal. We manufacture it with equipment we designed and with proprietary additives, Unicorn Bags are pliable at any temperature as well as after sterilization. The bag opening is designed for easy sealing and the bag’s bottom seal can withstand agitation. Type: Gussetted Material: 2.2 Mil Polypropylene Bag...

Blue Myco XLS Double Patch Fruiting Bags (50-Pack)

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The perfect bag for anyone fruiting directly in the bag! Try these and you will be amazed! These bags are crafted for durability, our extra-large gusseted bags (23.5” x 10" x 5.5") are made from...

The perfect bag for anyone fruiting directly in the bag! Try these and you will be amazed! These bags are crafted for durability, our extra-large gusseted bags (23.5” x 10" x 5.5") are made from high-quality 3 mil PP material, meticulously engineered to minimize micro-tears. This robust construction significantly diminishes the risk of contamination, providing you with a safer and more reliable growing environment. Experience the difference with Blue Myco's Double Patch Fruiting Bags: see your...

Blue Myco Large Spawn Bags 3T 0.2 Micron Filter 8" X 5" X 19" Extra Thick (800-Pack Case)

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Discover the difference in the Blue Myco Spawn Bag. These are our favorite bags and we feel some of the best spawn bags in the world. We have tested countless spawn bags from all over the world....

Discover the difference in the Blue Myco Spawn Bag. These are our favorite bags and we feel some of the best spawn bags in the world. We have tested countless spawn bags from all over the world. Most bags are inconsistent, too flimsy or poor seals. We received samples of these and were instantly impressed! The 80 um thickness is 15% thicker than leading competitors and is easily noticeable. These bags seal like a dream and are being used in some of the largest grain spawn producers in Canada....

Colonized Grain Spawn Bag For Commercial Production 3 LBS (Choose Your Variety)

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(Now available) Myco Labs is excited to introduce our premium 3LB Colonized Grain Spawn, a top-choice product for both professional mushroom cultivation and passionate mycologists. Our grain spawn...

(Now available) Myco Labs is excited to introduce our premium 3LB Colonized Grain Spawn, a top-choice product for both professional mushroom cultivation and passionate mycologists. Our grain spawn stands out due to its exceptional quality, originating from first-generation genetics across a variety of gourmet mushroom strains. This guarantees not only vigorous growth but also abundant yields. Crafted from certified organic rye, milo & millet grain, our grain spawn is a thriving bed of mushroom...

Mushroom Spawn Bags

Midwest Grow Kits’s variety of mushroom spawn bags take mushroom growing to a whole other level. Each bag can produce the same as 8-10 substrate mushroom jars and they are the perfect add-on to any of our mushroom growing kits! Grab one of our all-in-one mushroom grow bags and get started today.

Mushroom spawn bags were once thought to be a more advanced method of growing, but we have designed our bags to be easier for beginners than any others we've seen and tested. All of our mushroom fruiting bags include a self-healing spore injector port. And if you choose our Deluxe Spawn Bag Growing and Casing Kit, you’ll get everything you need to start growing in bulk!?

Our mushroom substrate bags are capable of growing many exotic species of mushrooms. Review your country's laws and regulations regarding those exotic species. Midwest Grow Kits does not condone or recommend that anybody grow unless legally licensed by their local authorities.