foraged and found in nature
Grain Spawn is mushroom mycelium grown into certified organic rye grain which is ideal for inoculating sterilized substrates, or for use in unsterilized straw, paper, coffee grounds or bed-style inoculations. We recommend using grain spawn within one to three months of purchase. Most species must be stored refrigerated. This grain is ready to go, just mix it with straw, paper, coffee grounds, wood chips, yard waste etc.