You’re warm weather Pleurotus ostreatus, or oyster mushroom grain spawn comes ready to use. It can be refrigerated and used later if need be.
For faster colonization of bulk substrate, this 5lb bag can be used to incoualte five 10lb bags of bulk subsrate (1lb of spawn per bag). You may cut to 8oz to double your bulk substrate bags.
Substrate: pasteurized hay, hardwood sawdust, or sterilized supplemented hardwood sawdust.