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Grain Spawn Bags (10 Pack)




Ready to make your own grain spawn and need bags?
Order our ten pack of side-gusseted, breathable stand-up bags today!
Autoclavable and pliable, even after sterilization. These bags are designed for easy top sealing with a strong bottom seal to withstand agitation. Holds up to 3 pounds of cooked grain.

  • Grain Spawn Guarantee
  • Free Shipping over $50
  • Pro. Grower Phone Support

BoomBox vs the other guy's All in One Grow Kits

  • We designed the perfect system for growing magic mushrooms at home...
  • American Grown; High quality grain spawn straight from Eastern Colorado & autoclave sterilized by the Fanatics in Denver. Every kit supports local farmers.
  • Colonization Guarantee; if you have any issues innoculating your grain spawn or if your kit doesnt colonize we'll send you a fresh kit free of charge.
  • Dehydrated Substrate; Fresh, dried coco coir ready for pasturization when you are. With other all in one grow bag kits your substrate sits for days collecting and growing bacteria.
See Our Kits In Action β†’