Non-Sterilized Vermiculite

MushroomSupplies.com's Vermiculite is a professional substrate conditioner trusted by commercial mushroom growers. With a fine texture, our vermiculite is ideal for making premium substrates that lead to amazing growth and yields. Our OMRI Certified Organic vermiculite is perfect for any soil. Trusted by commercial growers to support and amplify mushroom growth Maintains optimum hydration levels when growing mushrooms, vegetables, and other plants Creates space for mycelium to expand and grow The porosity allows excess water to drain away Lasts longer than other additives The same organic vermiculite used in our best-selling Mushroom Substrate and recommended by Mycologists!!