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Questions about how much vermiculite to order? Check out the substrate calculator here.

(Note: vermiculite is very lightweight, making it more difficult to precisely measure by weight. We sell by volume to ensure you are getting a consistent amount each time. The substrate calculator on our website also uses these same measurements.)

Vermiculite is a core ingredient in bulk substrate for the cultivation of many mushrooms, holding the perfect amount of moisture the mycelium needs as it colonizes and fruits inside your fruiting chamber.

Looking for the rest of your CVG ingredients? Coco coir is here, and gypsum is here.

Vermiculite

Bulk Vermiculite

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