Simple Mushroom Substrate - Ready-to-Use CVG/CVA Mix for Beginners

Simple Substrate – Premium CVA Blend (Coir • Vermiculite • Azomite) Clean. Balanced. Reliable. Our Simple Substrate is a carefully balanced CVA blend of sustainably sourced coco coir, vermiculite, gypsum, and Azomite, designed to support strong, even mycelial colonization. Hydrated to field capacity and prepared in Unicorn XLS-A bags, this substrate offers excellent moisture retention, airflow, and trace mineral support. Why Growers Choose Simple Substrate Sustainably Sourced Coco Coir – Consistent hydration and structure Vermiculite – Improves aeration and moisture stability Gypsum – Supports structure and mineral balance Azomite – Over 70 trace minerals for enhanced biological activity Hydrated to Field Capacity – Ready to mix with grain spawn Prepared in Unicorn XLS-A Bags – Clean handling and reliable performance Vacuum-Sealed Secondary Protection – Extended shelf stability Available Sizes 3lb 5lb