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Self-healing injection port: bags include a self-healing injection port for use with a spore or culture syringe plus a 02 micron filter patch to block airborne contaminants while providing even gas exchange.
They can also be stored for several months before use. The temperature for incubation shouldn't exceed 75 degrees F or dip below 55 degrees F. When the bag is completely white with mycelium your spawn is ready to use. Mixing with substrate: we recommended 1 lb of colonized grain spawn for every 5 lb of manure or hardwood substrate. We also recommend using 2. 5-5ccs per 3 lb grain bag. All of our grain spawn bags are hydrated to a target of 50%.

Rapid colonization blend: a proprietary mix of millet and hardwood oak that guarantees a high-yield colonization that is superior to traditional grain substrates, such as Rye Berries. No injection port needed: our team of mycologists designed this product so you can inject a liquid culture syringe directly into the bag without the need for a self healing injection port.
Superior sterilization process: Our proprietary sterilization process is best-in-class and includes hospital-grade sterility testing. Mycologists consider this blend as the fastest colonizing mix on the market! Perfect for medicinal and gourmet mushrooms: Whether you are growing lions mane, or many other species of mushrooms, oyster, medicinal mushrooms, this substrate will provide the nutrients your mycelium will love!. Works great for at-home hobbyists and large-scale cultivators.

5lb, for a total of 3lb of sterilized and ready to inoculate rye berries. Injection port makes it easy and worry free to inject your spores or liquid culture. Sterilized and vacuum sealed grain bag is guaranteed to arrive contamination free. Comes in an additional vacuum seal bag for extra protection and guaranteed contamination free arrival.







Easy to use- extremely easy to use, the mushroom kit lets you easily inoculate your bag with liquid culture so you can begin your journey to growing and cultivating mushrooms right at home! Facts to note- it is important to note that upon receiving your spawn bags it is advised you inspect it immediately for contamination as after you inject your bag with spores, it will be non-refundable.
Convenient filter patch- the growing organic sterilized grain Spawn mini bag boasts a convenient and efficient filter patch which allows for optimum gas exchange to occur and keeps contamination at bay. Fool proof and premium quality. Fresh mushrooms at home- get to grow fresh mushrooms easily and quickly right in the comfort of your own home with the Growing Organic mushroom grow kit.
1. North Spore
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North Spore 3lb Organic Hydrated Sterilized Grain Bag w/ Self-Healing Injection Port | Sterile Mushroom Spawn Bag w/ 0.2 Micron Filter Patch | USDA Certified Organic
#adNorth Spore #ad - If you have any issues or questions, just reach out to us. This will dramatically speed up the colonization process. For better results: when the mycelium has grown three to four inches you should, without opening the bag, carefully break up the colonized grain and mix it into the uncolonized grain.Self-healing injection port: bags include a self-healing injection port for use with a spore or culture syringe plus a 02 micron filter patch to block airborne contaminants while providing even gas exchange.
More information #ad
We want your grow to be a success! Colonization: allow your bag to colonize in a cool location out of direct sunlight. Optimal moisture content: without moisture, mycelium will not colonize. They can also be stored for several months before use. The temperature for incubation shouldn't exceed 75 degrees F or dip below 55 degrees F. When the bag is completely white with mycelium your spawn is ready to use. Mixing with substrate: we recommended 1 lb of colonized grain spawn for every 5 lb of manure or hardwood substrate. We also recommend using 2. 5-5ccs per 3 lb grain bag. All of our grain spawn bags are hydrated to a target of 50%.
Brand | North Spore #ad |
Manufacturer | North Spore #ad |
Weight | 3 Pounds |
Part Number | EQUIP-INJECTBAG-3LB-V2 |
More information #ad
2. MushroomSupplies.com
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MushroomSupplies.com Sterilized Grain Bag for Mushroom Growing | Millet Substrate | 0.2 Micron Filter Mycobag Grow Kit | Mycology Cultivation Supplies 3LB
#adMushroomSupplies.com #ad - Millet's size maximizes the surface area in which mycelium can grow, and hardwood Oak ensures the moisture content is perfectly distributed. Simply insert your needle into the grain bag, inject the liquid culture into the grain, and cover the point of injection with tape.Rapid colonization blend: a proprietary mix of millet and hardwood oak that guarantees a high-yield colonization that is superior to traditional grain substrates, such as Rye Berries. No injection port needed: our team of mycologists designed this product so you can inject a liquid culture syringe directly into the bag without the need for a self healing injection port.
More information #ad
Easy to use: perfect for inoculation via spore injection, grain-to-grain, or by adding agar directly to the bag. Superior sterilization process: Our proprietary sterilization process is best-in-class and includes hospital-grade sterility testing. Mycologists consider this blend as the fastest colonizing mix on the market! Perfect for medicinal and gourmet mushrooms: Whether you are growing lions mane, or many other species of mushrooms, oyster, medicinal mushrooms, this substrate will provide the nutrients your mycelium will love!. Works great for at-home hobbyists and large-scale cultivators.
Brand | MushroomSupplies.com #ad |
Manufacturer | MushroomSupplies.com #ad |
Height | 4.5 Inches |
Length | 7.87 Inches |
Weight | 3 Pounds |
Width | 7.87 Inches |
More information #ad
3. INTERGALACTIC MUSHROOM
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INTERGALACTIC MUSHROOM 3lb Sterilized and Vacuum Sealed Organic Rye Berry Grain Bag with Injection Port- 3lbs 2 Bags Each 1.5lb
#adINTERGALACTIC MUSHROOM #ad - 3lb 2 x 1. 5lb of perfectly hydrated and sterilized rye berries in a 5 micron filter bag with injection port. Works for any mushroom strain. This product includes 2 grain bags, each 1.5lb, for a total of 3lb of sterilized and ready to inoculate rye berries. Injection port makes it easy and worry free to inject your spores or liquid culture. Sterilized and vacuum sealed grain bag is guaranteed to arrive contamination free. Comes in an additional vacuum seal bag for extra protection and guaranteed contamination free arrival.
More information #ad
Prepared by experts by hand in small batches; this rye berry grain bag has minimum amount of burst berries and is hydrated to perfect moisture content for optimum mycelium growth. Just inject your choice of spores or liquid culture sold or made separately for fast colonization. Made with usa grown and Organic Rye Berries.Brand | INTERGALACTIC MUSHROOM #ad |
Manufacturer | Intergalactic Mushroom #ad |
Height | 5 Inches |
Length | 7 Inches |
Width | 7 Inches |
More information #ad
4. BetterFungi
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BetterFungi 3 Lb Sterilized Grain Bag with Injection Port Milo, Make Your Own Master Grain Spawn
#adBetterFungi #ad - Please note that this is a perishable product - Please refrigerate if not used immediately after receiving the product. Due to unreliable nature of liquid culture/spores, seller is not responsible for this product once it has been inoculated or if issues not reported within 48 hours whichever occurs first.More information #ad
Self-healing Injection Port for easy inoculation. 3 lbs of sterilized grain in a plastic grow bag with 02 filter. Please inspect the product on arrival for any issues and report same within 48 hours.Brand | BetterFungi #ad |
Manufacturer | BetterFungi #ad |
Weight | 3 Pounds |
More information #ad
5. Out-Grow
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Sterilized Rye Berry Mushroom Substrate with Self Healing Injection Port 1
#adOut-Grow #ad - Five micron filter patch for gas exchange while keeping contaminations out. Great for any gourmet mushroom mycelium. Self healing injection port to help guard against contamination during inoculation.More information #ad
Easy to use and can be stored for up to 4 months. Hydrated and fully sterilized ready to use out of the box.Brand | Out-Grow #ad |
Manufacturer | Out-Grow LLC #ad |
Weight | 1 Pounds |
More information #ad
6. Out-Grow
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Sterilized Rye Berry Mushroom Substrate with Self Healing Injection Port 6
#adOut-Grow #ad - Self healing injection port to help guard against contamination during inoculation. Great for any gourmet mushroom mycelium. Five micron filter patch for gas exchange while keeping contaminations out.More information #ad
Hydrated and fully sterilized ready to use out of the box. Easy to use and can be stored for up to 4 months.Brand | Out-Grow #ad |
Manufacturer | Out-Grow LLC #ad |
Weight | 1 Pounds |
More information #ad
7. Liquid Fungi
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2 x 3 lb. Sterilized Rye Berry Mushroom Substrate in Unicorn Bags with Injection Ports for Grain Spawn
#adLiquid Fungi #ad - Includes inoculation instructions. Highest quality Unicorn bags with injection port. Enhanced with all the needed nutrients. Sterile and ready for inoculation. Perfect for mushroom grain spawn bags.More information #ad
Brand | Liquid Fungi #ad |
Manufacturer | Liquid Fungi #ad |
Weight | 3 Pounds |
More information #ad
8. BetterFungi
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3 LB Rye Sterilized Grain Bag with Injection Port, Make Your Own Master Grain Spawn
#adBetterFungi #ad - Due to unreliable nature of liquid culture/spores, seller is not responsible for this product once it has been inoculated or if issues not reported within 48 hours whichever occurs first. Self-healing Injection Port for easy inoculation.More information #ad
Please note that this is a perishable product - Please refrigerate if not used immediately after receiving the product. Please inspect the product on arrival for any issues and report same within 48 hours. 3 lbs of sterilized grain in a plastic grow bag with 02 filter.Brand | BetterFungi #ad |
Manufacturer | BetterFungi #ad |
Height | 0.79 Inches |
Length | 1.57 Inches |
Weight | 3 Pounds |
Width | 1.57 Inches |
More information #ad
9. Out-Grow
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Rye Berry Mushroom Substrate Grow Bags with Self Healing Injection Port 3lbs Bag 1
#adOut-Grow #ad - Mushroom grow bag has a self-healing injection port. Easy to use and simplifies mushroom cultivation. Five-micron filter patch to allow gas exchange and keep contamination out. Fully hydrated, sterilized with gypsum and nutrients added. Large 3lb mushroom grow bag.More information #ad
Brand | Out-Grow #ad |
Manufacturer | Out-Grow® #ad |
Weight | 3 Pounds |
Warranty | We will replace any item that arrives defective. Please inspect all items prior to use. |
More information #ad
10. Growing Organic
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Sterilized Grain Bag with Injection Port | Fast Colonization, Robust Mycelium Growth | Grow Your Own Edible Mushroom at Home | 3lbs
#adGrowing Organic #ad - 100% organic- each indoor grow kit of this sterilized Grain Spawn for mushrooms features 3 pounds of completely organic millet which ensures the purest source of grains for your mushroom growth needs.Easy to use- extremely easy to use, the mushroom kit lets you easily inoculate your bag with liquid culture so you can begin your journey to growing and cultivating mushrooms right at home! Facts to note- it is important to note that upon receiving your spawn bags it is advised you inspect it immediately for contamination as after you inject your bag with spores, it will be non-refundable.
More information #ad
Convenient filter patch- the growing organic sterilized grain Spawn mini bag boasts a convenient and efficient filter patch which allows for optimum gas exchange to occur and keeps contamination at bay. Fool proof and premium quality. Fresh mushrooms at home- get to grow fresh mushrooms easily and quickly right in the comfort of your own home with the Growing Organic mushroom grow kit.
Brand | Growing Organic #ad |
Manufacturer | Growing Organic #ad |
Height | 5 Inches |
Length | 8 Inches |
Weight | 3 Pounds |
Width | 5 Inches |
More information #ad