Improves Soil & Substrate Structure: Prevents compaction and enhances air circulation for healthier roots and mushroom mycelium. Ideal for gardens, lawns, and grow operations. Boosts Plant and Mushroom Growth: High-purity gypsum for gardening delivers essential calcium and sulfur while maintaining a balanced pH for vibrant, thriving plants. Enhances Water Retention: Promotes even moisture distribution, helping soil and substrate stay hydrated without becoming oversaturated or soggy. Reduces Clumping & Improves Texture: Our garden gypsum loosens soil and substrate for better airflow, stronger root development, and healthier mushroom cultivation. Solution-Grade Purity (97%-99%): Premium gypsum soil amendment rich in calcium sulfate dihydrate to improve soil structure, reduce erosion, and support robust growth. Olympus Myco premium-grade gypsum powder is a vital ingredient in creating the ideal substrate for mushroom cultivation. It is also a rich source of calcium and sulfur, which are essential nutrients for healthy mushroom growth. Additionally, our gypsum powder improves water retention, regulates moisture levels, and prevents clumping, resulting in better air circulation. Our solution grade gypsum is a high-purity form of gypsum that is finely ground and designed to quickly dissolve in water. It is an ideal soil amendment that can improve soil structure, reduce soil erosion, and supply essential nutrients such as calcium and sulfur to plants and mushrooms. In addition, solution grade gypsum can be used in industrial processes as a source of calcium and sulfur. Whether you're a beginner or an experienced mushroom cultivator, our gypsum powder is an essential component of your mycology supplies and mushroom grow kit, helping to promote robust and healthy mushrooms.