Mushroom Grain Spawn

Mushroom Grain Spawn
Our grain spawn is grown on 100% certified organic rye berries. It arrives contaminate free, fully developed, and ready to use. Grain spawn is used to inoculate many bags of bulk substrate quickly, and is the choice methodology for medium and large scale growers.

Mix & Match Automatic Volume Discounts
Choose the single mushroom grain spawn bags you want. The more you buy, the more you save! Discounts are automatically applied in the cart and at checkout.