8-Pack Organic Sterilized Grain Spawn Bags
Certifications | USDA certified organic |
Moisture content | Hydrated to a target of 50% |
Carton size | 8 bags (24 lbs) |
Bag weight | 3 lbs each |
A $176 value!
Our best-selling organic sterilized grain spawn bag was formulated by mycologists to maximize the speed and size of your mushroom grow. (All that's required is a spore syringe or liquid culture!)
Each spawn bag contains our proprietary grain blend featuring hydrated, nutrient-rich, organic millet and wheat berries. Bags also include a self-healing injection port for use with a spore or culture syringe plus a 0.2 micron filter patch to block airborne contaminants while providing even gas exchange. (Note: Color of injection port may vary.)
Why millet?
Millet has a much lower endospore load than rye and wheat, making it less prone to contamination. And its small size means your spawn will have many more inoculation points for the same volume of grain. By using millet, the mycelium will spread more evenly and abundantly through the substrate. And, as a high-nutrient medium, it also encourages rapid mycelial expansion.
Sterilization
North Spore grain spawn bags are sterilized in a commercial-grade autoclave. Sterility is verified using biological indicators and temperature sensors.
Spawn to bulk ratio
We recommended 1 lb of colonized grain spawn for every 5 lbs of manure or hardwood sterile substrate. We also recommend using 2.5-5ccs per 3 lb injection port bag. (See Inoculation and Colonization below for full details.)
Recommended add-ons
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To inoculate the grain bag, simply inject your spore or culture syringe through the port in a sterile location. We always recommend clean hands and latex or nitrile gloves to reduce the introduction of contaminants.
It is best practice to wait a minimum of 1 week after arrival before injecting grain bags to ensure they were not compromised during transit. Rest assured that your purchase is 100% guaranteed. If your bag was compromised, we will replace it.
We recommend using 2.5-5ccs per 3lb injection port bag. We do not typically recommend using an entire syringe in one bag. Doing so adds excessive moisture which can create over saturation in the bag. This over-saturation can pool and is prone to being anaerobic and the mycelium will have a hard time colonizing.
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Allow your bag to colonize in a cool location out of direct sunlight. Temperature for incubation shouldn't exceed 75 degrees F or dip below 55 degrees F. After a couple weeks, you should start to see mycelium growing on the grain.
You'll notice the white mycelium growing outward from the injection point. When it 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. This will dramatically speed up the colonization process.
When the bag is completely white with mycelium your spawn is ready to use. This may take a couple weeks to a month or more depending on the species and vigor of your culture.
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Grain bags should be stored at room temperature out of direct sunlight. No refrigeration is necessary. They can also be stored for several months before use.
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North Spore's products shall only be used for lawful purposes. North Spore does not condone hallucinogenic mushroom growing in jurisdictions where it is illegal.
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Fastest colonization rates than other grains
I have boughten these multiple times now with zero contamination on every grow. knock on wood, but still I cant be more impressed with how the grain bags work on just about all mushroom types.
Great
Great product will buy again
North Spore
Thank you for your review, Ernest!
Great grain spawn!
These are the best grain spawn bag I have personally ever used, I haven’t had one ever let me down. I’ve used many different brands from many different sites and these are the only ones I trust! Thank you so much North Spore!
North Spore
Thank you so much for the kind review Austin! We so appreciate it, and are so happy to hear you have had great success with our grain bags. Mush Love!
Great no issues and everything was and still is absolutely on point for success.
North Spore
So great to hear you're enjoying the products, Pat!
These Grain Bags Rule!
They are so easy, fast, and convenient. The price to volume ratio and cleanliness is also on point! Gotta prioritize Organic Grain!
North Spore
Thanks for the great review! Our team is here to help if you ever need anything.