Mycelium Mushroom Growing Kit (5LB Bag) I CVG Substrate (Coco Coir, Vermiculi… on July 18, 2026 July 18, 2026 Manufacturer: Mycelium. This mix is the perfect foundation for growing dung-loving mushrooms. Manufacturer Part Number: MY-2015-5. Model Number: 2015-5. Unit Count: 1.0 Count.