Myco Labs Premium Bulk Mushroom Substrate Mix | Fully Pastuerized | Maximum Yield | for Dung & Grain Loving Mushrooms (5 LBS)

Midwest's Premium Select Bulk Substrate is a meticulously crafted blend, integrating premium organic Coco Coir, Vermiculite, Calcium+ , Gypsum, pH buffers and stabilizers, mineral water, along with other select ingredients. Our casing is pre-hydrated and pasteurized, offering convenience as it's usable straight from the bag. Ideal for kickstarting your bulk cultivation, it pairs seamlessly with a fully colonized spawn bag. Packaged in a 5-pound, hermetically sealed bag, it's immediately usable or can be stored in a refrigerator or freezer for up to six months. Crafted specifically for Manure & Grain loving Mushrooms!