These substrate blocks are made with sawdust, nitrogen-rich soy hulls, and are PACKED with living mycelium. They are a great soil amendment, and can even still produce oyster mushrooms if the conditions are right. Help loop the food system with this all natural fertilizer!

NOTE: Please only add this item if you are picking up from the farm OR pre-ordering for the Champlain Islands Farmers Market OR are eligible for local delivery (Burlington and South Burlington). We unfortunately do not ship spent mushroom substrate currently.

NOTE: If you choose to grow mushrooms with spent mushroom substrate, FUNJ Shrooming Company frees itself of liability from proper harvesting, identifying, cooking, and others not listed here. You consume mushrooms grown from spent mushroom substrate at your own risk.