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Premium Mushroom Spawn
Organic Grain Spawn
Our certified organic grain spawn is made with a proprietary blend of millet and wheat berries. Grain spawn is ideal for indoor mushroom production, outdoor beds, and spawning monotubs or containers.
Sawdust Spawn
Sawdust spawn is most often used to inoculate logs. However, some species can be used to inoculate outdoor beds. It's preferred for larger log inoculation projects, and pairs perfectly with our inoculation tools.
Plug Spawn
Plug spawn is great for smaller log projects or for those new to growing mushrooms on logs. 8.5mm holes are drilled around the the circumference of freshly cut hardwood logs and plug spawn is hammered into the holes.
All North Spore spawn is handmade in Maine, USA and 100% guaranteed.
Achieve a better grow with premium mushroom spawn
North Spore spawn is made from the highest-quality cultures and formulated by expert mycologists.
Whether you're a commercial mushroom grower, small scale grower, or weekend hobbyist, we offer a large variety of certified organic grain spawn, sawdust spawn, and plug spawn for every mushroom growing project.
Read what customers are saying
"I don't have enough good things to say about the North Spore team! Not only did they send out some really robust spawn; they also were amazing and answered all my questions!"
Jenny O.
"Communication, delivery, advice and quality are all checked off as excellent in my experience with North Spore. They will definitely be receiving more spawn orders from me."
Don S.
"This spawn is super vigorous and flushes well. It is a consistent performer for our market and travels well. Thank you North Spore for producing such high quality products! "
Heather W.
Using spawn in your garden bed projects
You can grow mushrooms alongside your vegetables or all by themselves! Watch this video to learn how to use sawdust or grain spawn to make an outdoor mushroom bed.
Using spawn in your log and totem projects
Sawdust and plug spawn can be used to inoculate freshly cut hardwood logs in shady outdoor spots! Watch this video to learn how to inoculate logs to grow your favorite mushrooms.
