{"product_id":"mushroom-merchant-gypsum-powder-for-mushroom-substrate-lab-grade-5-lb-highly-soluble-calcium-sulfate-dihydrate","title":"Mushroom Merchant Gypsum Powder for Mushroom Substrate – Lab Grade, 5 lb, Highly Soluble Calcium Sulfate Dihydrate","description":"\u003ch2\u003ePremium Gypsum Powder for Mushroom Substrate\u003c\/h2\u003e\n\u003cp\u003eMushroom Merchant Gypsum Powder is a lab-grade calcium sulfate dihydrate designed for mushroom growers and garden enthusiasts. Packaged in a HEPA-filtered facility, this 97% pure, ultra-fine powder dissolves smoothly and mixes easily into substrate or soil, helping create a stable growing environment.\u003c\/p\u003e\n\u003ch3\u003eWhy this gypsum powder stands out\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eLab-grade purity and precise composition: 97% calcium sulfate dihydrate; ultra-fine particles for simple mixing\u003c\/li\u003e\n  \u003cli\u003eImproved substrate structure: reduces clumping and promotes even water and mineral distribution\u003c\/li\u003e\n  \u003cli\u003eMulti-use versatility: ideal for mushroom substrate, garden beds, grain spawn, lawns, and CVG blends\u003c\/li\u003e\n  \u003cli\u003eMineral support: delivers calcium and sulfate minerals that plants and mycelium can access\u003c\/li\u003e\n  \u003cli\u003eQuality and provenance: USA-made, mined, refined, and packed by experienced mycologists\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow it can fit into your growing and gardening routine\u003c\/h3\u003e\n\u003cp\u003eIn mushroom cultivation, gypsum is commonly mixed into substrate to balance texture and minerals. In gardens, it helps improve soil structure and nutrient availability. The ultra-fine powder dissolves quickly in water, making it convenient for indoor setups and outdoor beds alike. For mushroom blocks prepared with CVG (coco coir, vermiculite, and gypsum), gypsum often contributes to a well-balanced substrate that supports mycelial growth and the development of fruiting bodies. Results can vary depending on your setup, but many growers find gypsum a straightforward way to enhance substrate consistency and plant health.\u003c\/p\u003e\n\u003ch3\u003eProduct specifics\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSize: 5 pounds per bag\u003c\/li\u003e\n  \u003cli\u003eForm: Ultra-fine gypsum powder\u003c\/li\u003e\n  \u003cli\u003ePurity: 97% calcium sulfate dihydrate\u003c\/li\u003e\n  \u003cli\u003eOrigin: USA-made, mined, refined, and packed in the USA\u003c\/li\u003e\n  \u003cli\u003ePackaging: Packaged in a HEPA-filtered facility to minimize contamination\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e sensory note:\u003c\/strong\u003e the powder appears as a bright, clean white texture that blends seamlessly into substrate with minimal agitation.\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 gypsum powder used for in mushroom cultivation?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Gypsum powder (calcium sulfate dihydrate) helps structure substrate and improves mineral availability to support healthy mycelium growth.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Why choose Mushroom Merchant gypsum powder?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Lab-grade, 97% pure, ultra-fine gypsum packaged in a HEPA-filtered facility for mushrooms and plants.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Mushroom Merchant","offers":[{"title":"Default Title","offer_id":45740988203194,"sku":"B0DDM2FP8Q","price":71.32,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/3536\/8890\/files\/mushroom-merchant-gypsum-powder-mushroom-substrate.jpg?v=1774805883","url":"https:\/\/gardencanada.ca\/products\/mushroom-merchant-gypsum-powder-for-mushroom-substrate-lab-grade-5-lb-highly-soluble-calcium-sulfate-dihydrate","provider":"Garden Canada","version":"1.0","type":"link"}