{"product_id":"olympus-myco-97-pure-gypsum-powder-1-lb-calcium-sulfate-for-soil-mushroom-substrates","title":"Olympus Myco 97% Pure Gypsum Powder (1 lb) – Calcium Sulfate for Soil \u0026 Mushroom Substrates","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eOlympus Myco 97% Pure Gypsum Powder is a versatile soil and substrate amendment designed for gardeners and mushroom cultivators. Each 1 lb bag features high-purity calcium sulfate dihydrate that can support healthier root systems, better substrate structure, and balanced moisture movement. While not a guarantee, users often notice a clearer texture and more open air spaces in treated media.\u003c\/p\u003e\n\u003ch3\u003eWhat it can help with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eImproves Soil and Substrate Structure: helps prevent compaction, enhances air circulation, and supports robust root and mycelium networks.\u003c\/li\u003e\n\u003cli\u003eContains essential Calcium and Sulfur: provides nutrients that plants and fungi may rely on while helping maintain a balanced pH in many media.\u003c\/li\u003e\n\u003cli\u003eEnhances Water Retention: promotes even moisture distribution so media stay hydrated without becoming soggy.\u003c\/li\u003e\n\u003cli\u003eReduces Clumping and Improves Texture: loosens dense soils and substrates for easier mixing and better airflow.\u003c\/li\u003e\n\u003cli\u003eHigh Purity: solution-grade calcium sulfate dihydrate at 97–99% purity supports consistent performance and reduces erosion in light soils.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePractical uses across settings\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGardens and Lawns: amend beds and turf to improve structure, reduce crusting, and help roots reach oxygen and water more efficiently.\u003c\/li\u003e\n\u003cli\u003eMushroom Substrates: integrate into sawdust, straw, or other substrates to support even hydration and robust mycelial growth.\u003c\/li\u003e\n\u003cli\u003eGeneral Garden Projects: use as part of routine soil conditioning to maintain healthy media between plant cycles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to use\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGeneral soil amendment: broadcast or till into the top layer at recommended rates, then water as usual.\u003c\/li\u003e\n\u003cli\u003eSubstrate preparation: mix thoroughly into mushroom substrates or potting media before use.\u003c\/li\u003e\n\u003cli\u003eStorage and handling: store in a cool, dry place and handle with care to avoid dust generation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWith Olympus Myco, you get a reliable, consistent gypsum amendment backed by a focus on purity and practical versatility for daily gardening and cultivation tasks.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What is Olympus Myco 97% Pure Gypsum Powder used for?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: A high-purity calcium sulfate dihydrate soil amendment that can improve structure, aeration, and moisture distribution in soil, lawns, gardens, and mushroom substrates.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How should I apply Olympus Myco Gypsum Powder?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Broadcast or mix into soil or substrate as part of regular amendments; follow packaging guidance and avoid excessive use to maintain balance.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Olympus Myco","offers":[{"title":"Default Title","offer_id":45740494979258,"sku":"B0C5K2SSP1","price":40.9,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/3536\/8890\/files\/olympus-myco-gypsum-powder-bag-front.jpg?v=1774786814","url":"https:\/\/gardencanada.ca\/products\/olympus-myco-97-pure-gypsum-powder-1-lb-calcium-sulfate-for-soil-mushroom-substrates","provider":"Garden Canada","version":"1.0","type":"link"}