Midwest's Select Bulk Substrate Casing Mix - 5 pounds mushroom greenhouse 2–4 weeks for oysters)

2–4 weeks for oysters)

Our sterile rye spawn bags are soaked overnight

particularly at the edges — this is healthy and not contamination

Compatible with all standard wide-mouth mason jars

Shelf life: 45 days unrefrigerated / 90+ days refrigerated

Midwest's Select Bulk Substrate Casing Mix - 5 pounds mushroom greenhouse 2–4 weeks for oysters)Midwests Select Bulk Substrate Casing Mix 5 Pounds Ready to Use Pasteurized Balanced pH Ideal Field Capacity for Monotubs & Bulk Grows Take the guesswork out of bulk growing with Midwests Select Bulk Substrateour top selling 5 lb substrate blend trusted by growers nationwide. Fully hydrated, pasteurized, and optimized for strong mycelial growth, this ready to use bulk substrate is designed to help support fast colonization, healthy pin sets, and heavy