Our 4lb Coco Coir Substrate Bag is expertly crafted to support vigorous mushroom growth! Enriched with calcium carbonate (CaCO3) for pH stability, vermiculite for superior moisture retention, and nutrient-rich worm castings, this blend is designed for premium mushroom yields. Ready to use right out of the bag, it provides the ideal foundation for mycelium to flourish, with perfect aeration and hydration balance. Ideal for home cultivators and seasoned growers alike, our coco coir substrate delivers everything your mushrooms need for a successful harvest. Experience effortless, high-quality growth with our enhanced substrate mix!