{"product_id":"gypsum-powder-for-mushroom-substrate-lab-grade-97-purity-mushroom-merchant","title":"Gypsum Powder for Mushroom Substrate | Lab Grade, 97% Purity | Mushroom Merchant","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eDiscover top‑quality gypsum powder from Mushroom Merchant, designed for mushroom substrates and garden soil. This lab grade, calcium sulfate dihydrate powder arrives in a clean, HEPA‑filtered setting, ensuring a high level of purity and consistency. Each 1‑pound bag is crafted with care for growers who value reliable, clean inputs that support steady cultivation and vibrant harvests.\u003c\/p\u003e\n\u003ch2\u003eWhat makes this gypsum powder stand out\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLab-grade quality\u003c\/strong\u003e — produced in a facility dedicated to mushrooms and plants, minimizing contaminants.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh purity\u003c\/strong\u003e — 97% calcium sulfate dihydrate for dependable performance and easy mixing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra‑fine and highly soluble\u003c\/strong\u003e — blends smoothly with substrate and water for uniform distribution.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eImproves soil structure\u003c\/strong\u003e — reduces clumping, enhances water movement, and helps make nutrients more accessible.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile substrate amendment\u003c\/strong\u003e — ideal for mushroom substrate, garden soil, landscaping, grain spawn, and more. A key component in common CVG blends (coco coir, vermiculite, gypsum).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAffordably reliable\u003c\/strong\u003e — quality you can trust at a price that supports ongoing growing projects.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMade in the USA\u003c\/strong\u003e — mined, refined, and packed domestically to support consistent sourcing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eReal‑world benefits and use cases\u003c\/h2\u003e\n\u003cp\u003eGYPSUM powder is valued for its ability to help create an even substrate environment where mycelium can establish itself more readily and fruiting bodies can develop with vigor. Since it is a source of calcium and sulfate, it provides nutrients that plants and mushrooms rely on, potentially supporting steadier growth and healthier yields when used as part of a balanced mix. While results vary with conditions, growers often notice improved texture, better moisture handling, and more predictable mixing routines.\u003c\/p\u003e\n\u003cp\u003eIn mushroom cultivation, many users incorporate this gypsum as a staple component in substrate builds. In gardens, it can aid soil structure and nutrient availability in a range of soils. Indoor or outdoor setups both benefit from inputs designed to dissolve cleanly and contribute to a stable growing environment. The product’s packaging and purity are intended to make it a dependable addition to your toolkit, whether you’re refining a spawn prep process or maintaining healthy beds for longer seasons.\u003c\/p\u003e\n\n\u003ch3\u003eTwo easy ways to use\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMushroom substrate\u003c\/strong\u003e — blend gypsum with coco coir, vermiculite, and other components to support structure and nutrient access.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGarden soil\u003c\/strong\u003e — mix into beds to improve texture and facilitate nutrient uptake for ongoing plant health.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eKey takeaways\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eLab-grade, 97% purity gypsum powder packaged in a clean facility.\u003c\/li\u003e\n  \u003cli\u003eUltra-fine and highly soluble for easy integration into substrates and soils.\u003c\/li\u003e\n  \u003cli\u003eVersatile uses across mushroom cultivation and gardening projects.\u003c\/li\u003e\n  \u003cli\u003eUSA-made with a focus on value, consistency, and reliability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\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 Mushroom Merchant Gypsum Powder best used for?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It supports substrate structure and nutrient availability for mushrooms and plants, promoting a stable growing environment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this gypsum powder produced in the USA and lab-grade?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It is 97% purity, lab-grade calcium sulfate dihydrate, and packed in a HEPA-filtered facility in the USA.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Mushroom Merchant","offers":[{"title":"Default Title","offer_id":45817126355130,"sku":"B0D3V95WWZ","price":36.85,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/3536\/8890\/files\/mushroom-merchant-gypsum-powder-lab-grade.jpg?v=1777539302","url":"https:\/\/gardencanada.ca\/products\/gypsum-powder-for-mushroom-substrate-lab-grade-97-purity-mushroom-merchant","provider":"Garden Canada","version":"1.0","type":"link"}