Product may not ship for up to 4 weeks.
Mushrooms do not fruit from grain spawn. Instead, grain spawn is used to inoculate a fruiting substrate.
Garden Oyster (Hypsizygus ulmarius) rye grain spawn. This is made as a custom order and is available by the kilogram.
You can use Garden Oyster to inoculate:
Garden Oyster can fruit from grow blocks (sawdust only or sawdust supplemented with bran) indoors or on log stacks outdoors.