5 lb Garden Pelletized Gypsum (Calcium Sulfate, CaSO4) for mushroom cultivation.

Pelletized Gypsum - pH Neutral Lawn & Vegetable Garden Soil Amendment

All natural, pH neutral, helps soften hard clay soils. Improves water drainage and air penetration. Supplies essential calcium and sulfur. Expands root growth; promoting strong plants. Neutralizes high magnesium, salts; preventing animal burn damage. For agricultural crops, lawn, garden, soil stabilization, remediation, and water clarifier.

If you have any questions, please ask! We GUARANTEE all items are fresh, true to type, shipped properly, and will perform as advertised. If you experience a VERY LOW or ZERO germination not caused by local conditions, or any other problems with your order, don't panic or get mad, just contact us for replacement or refund.