Midwest's Select Bulk Substrate Casing Mix - 7.5 pounds monotub USA-Sourced Grain – Consistently sourced

USA-Sourced Grain – Consistently sourced from trusted American farms

For the lowest possible cost-per-plate over time

High-density microfiber filter media

Beginners learning agar transfer technique — mistakes are forgiving because the mycelium outpaces most contamination

Midwest's Select Bulk Substrate Casing Mix - 7.5 pounds monotub USA-Sourced Grain – Consistently sourcedMidwest's Select Bulk Substrate Casing Mix 7. 5 Pounds Pasteurized Hydrated Ready to Use Take the guesswork out of bulk mushroom growing with Midwests top selling Select Bulk Substrate, now available in a convenient 7. 5 lb bag. Specially crafted for grain or dung loving mushrooms, this premium mix is fully hydrated, pasteurized, and ready to use right out of the bagperfect for monotubs, totes, or container grows. Designed for the popular bulk or