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Organic Sterilized Grain Bag with Injection Port
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![Organic Sterilized Grain Bag with Injection Port](http://northspore.com/cdn/shop/products/sterile-substrate-organic-sterilized-grain-bag-with-injection-port-29529660522598_70x.progressive.jpg?v=1706625762 1x, //northspore.com/cdn/shop/products/sterile-substrate-organic-sterilized-grain-bag-with-injection-port-29529660522598_70x@2x.progressive.jpg?v=1706625762 2x, //northspore.com/cdn/shop/products/sterile-substrate-organic-sterilized-grain-bag-with-injection-port-29529660522598_70x@2x.progressive.jpg?v=1706625762 2x)
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![Organic Sterilized Grain Bag with Injection Port](http://northspore.com/cdn/shop/products/sterile-substrate-organic-sterilized-grain-bag-with-injection-port-29508302438502_70x.progressive.jpg?v=1706625754 1x, //northspore.com/cdn/shop/products/sterile-substrate-organic-sterilized-grain-bag-with-injection-port-29508302438502_70x@2x.progressive.jpg?v=1706625754 2x, //northspore.com/cdn/shop/products/sterile-substrate-organic-sterilized-grain-bag-with-injection-port-29508302438502_70x@2x.progressive.jpg?v=1706625754 2x)
![Organic Sterilized Grain Bag with Injection Port](http://northspore.com/cdn/shop/files/sterile-substrate-organic-sterilized-grain-bag-with-injection-port-30806777757798_70x.progressive.jpg?v=1717001699 1x, //northspore.com/cdn/shop/files/sterile-substrate-organic-sterilized-grain-bag-with-injection-port-30806777757798_70x@2x.progressive.jpg?v=1717001699 2x, //northspore.com/cdn/shop/files/sterile-substrate-organic-sterilized-grain-bag-with-injection-port-30806777757798_70x@2x.progressive.jpg?v=1717001699 2x)
![Organic Sterilized Grain Bag with Injection Port](http://northspore.com/cdn/shop/products/sterile-substrate-organic-sterilized-grain-bag-with-injection-port-29462878060646_70x.progressive.jpg?v=1717001475 1x, //northspore.com/cdn/shop/products/sterile-substrate-organic-sterilized-grain-bag-with-injection-port-29462878060646_70x@2x.progressive.jpg?v=1717001475 2x, //northspore.com/cdn/shop/products/sterile-substrate-organic-sterilized-grain-bag-with-injection-port-29462878060646_70x@2x.progressive.jpg?v=1717001475 2x)
![Organic Sterilized Grain Bag with Injection Port](http://northspore.com/cdn/shop/files/sterile-substrate-organic-sterilized-grain-bag-with-injection-port-29672309850214_70x.progressive.jpg?v=1717001475 1x, //northspore.com/cdn/shop/files/sterile-substrate-organic-sterilized-grain-bag-with-injection-port-29672309850214_70x@2x.progressive.jpg?v=1717001475 2x, //northspore.com/cdn/shop/files/sterile-substrate-organic-sterilized-grain-bag-with-injection-port-29672309850214_70x@2x.progressive.jpg?v=1717001475 2x)
Certifications | USDA certified organic |
Moisture content | Hydrated to a target of 50% |
Bag weight | 3 lbs |
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.)
Recommended add-ons
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.)
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.
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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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- Reviews
- Questions
Thank you for submitting a review!
Your input is very much appreciated. Share it with your friends so they can enjoy it too!
![United States](https://cdn.stamped.io/cdn/images/pixel.png)
What kind of magical grains are These!?!?
this worked absolutely perfect for me. i simply injected 5cc of spore syringe and let it be for a while until the mycelium started spreading. I had it in a cooler room so it took longer to do its thing but it worked absolutely as you would want it to.
North Spore
Thanks for sharing, Jon! We're here to help if you need anything.
![United States](https://cdn.stamped.io/cdn/images/pixel.png)
All bags came perfect
These came well done and ready for use. So far at 100 percent success rate. Will be buying more.
North Spore
Fantastic, Brandon! Our team is here to help if you ever need anything.
![United States](https://cdn.stamped.io/cdn/images/pixel.png)
Awesome
Always sterile! Have inoculated several with zero contamination!
North Spore
So glad to hear it, Kristen! Thanks for the great review.
![United States](https://cdn.stamped.io/cdn/images/pixel.png)
I love you guys
it was awesome very easy to use and it came fast
North Spore
Thanks for your support, Lynette!
![United States](https://cdn.stamped.io/cdn/images/pixel.png)
Sterilized Grain bag is working great
Before I tried the Sterilized Grain Bag, I tried a technique that called for using a pre-cooked rice bag from a grocery store. It ended with mold contamination. Very sad. I decided to go with the Sterilized Grain Bag. I inoculated the grain bag with spores. After a couple of weeks the first signs of colonization appeared. I had to be patient. It's growing healthy and fast now. Great way to get your mushrooms started! I absolutely recommend this Grain Bag for better success.
North Spore
Thanks for sharing, Thom! We're so glad everything is working out for you.
![United States](https://cdn.stamped.io/cdn/images/pixel.png)
Excellent quality - wish it was 5lbs
Good results just wish the bags were bigger. Looking for greater value from my purchase.
North Spore
We appreciate the feedback, Nancy!
Always sterilized 100%
I have made multiple purchases and have always been satisfied!!! Everything is always clean and contamination free!!!
North Spore
We appreciate your business, David!
![United States](https://cdn.stamped.io/cdn/images/pixel.png)
Best grain bag
I have used the bags a couple times with great success. Once moved over to their manure in a tub they took right off. Highly recommend.
North Spore
Thanks for taking the time to share your experience, Kevin! Our team is here to help if you ever need anything.
![United States](https://cdn.stamped.io/cdn/images/pixel.png)
Good clean bags
Best grain spawn bags I've used so for. Thank you
North Spore
Thank you, Mason!
![United States](https://cdn.stamped.io/cdn/images/pixel.png)
Pleasantly suprised
It's no secret that the myco community has been full of a bunch of scams for years especially people knowingly sending either old or contamed supplies out and almost didn't try these guys but I'm glad I did was amazed how fast my culture colonized this millet will buy again forsure!
North Spore
We're so glad everything is working out for you, Ian! Our team is here if you need anything.