{"title":"Sterile Substrates \u0026 Grains","description":"","products":[{"product_id":"cvg-substrate","title":"CVG Substrate","description":"\u003cp\u003eOur premium CVG substrate is a carefully balanced blend of three essential components designed to create the ideal growing environment for mushroom cultivation. Coco coir provides excellent water retention and aeration, while vermiculite enhances moisture distribution and nutrient availability. Gypsum strengthens the substrate structure and supplies vital minerals that support robust mycelium colonisation. This sterile formulation eliminates the guesswork from substrate preparation, arriving ready to use straight from the bag. The precise ratio of ingredients ensures consistent results across multiple flushes, making it suitable for both experienced cultivators and those new to mushroom growing. The substrate's superior drainage prevents waterlogging whilst maintaining the moisture levels mushrooms need to thrive. Perfect for a wide range of species, our CVG substrate delivers reliable performance and impressive yields. \u003c\/p\u003e","brand":"westcoastmushrooms","offers":[{"title":"1kg","offer_id":56830466031998,"sku":null,"price":15.99,"currency_code":"GBP","in_stock":true},{"title":"2kg","offer_id":56830466064766,"sku":null,"price":19.99,"currency_code":"GBP","in_stock":true},{"title":"3kg","offer_id":56830466097534,"sku":null,"price":24.99,"currency_code":"GBP","in_stock":true},{"title":"4kg","offer_id":56830466130302,"sku":null,"price":29.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/3477\/2606\/files\/CVG_Substrate.jpg?v=1786119239"},{"product_id":"masters-mix-substrate-3kg","title":"Masters Mix Substrate 4.5kg","description":"\u003cp\u003eMasters Mix Substrate is a premium, sterilised growing medium specifically formulated to support healthy mushroom cultivation. This 4.5kg bag contains a carefully balanced blend of Oak sawdust and Soya hulls designed to provide optimal nutrition and moisture retention for a wide range of mushroom species. The substrate has been hydrated with \u003cmeta charset=\"utf-8\"\u003ein our double-filtered water and professionally sterilised inn our autoclaves to eliminate competing organisms and pathogens, giving your mushroom mycelium the best possible environment to colonise and fruit. Whether you're cultivating oyster, shiitake, lion's mane, or other gourmet varieties, this ready-to-use substrate removes the guesswork from preparation. Perfect for both beginners and experienced growers, Masters Mix offers consistent results and reliable performance. Simply inoculate with your chosen spawn and watch your mushrooms thrive. The generous 4.5kg quantity provides ample material for multiple fruiting blocks or a substantial single project. Store in a cool, dry place until ready to use. Each bag is sealed to maintain sterility until opening.\u003c\/p\u003e","brand":"westcoastmushrooms","offers":[{"title":"Default Title","offer_id":56830473044350,"sku":null,"price":19.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/3477\/2606\/files\/Masters_Mix_Substrate_03.jpg?v=1785959431"},{"product_id":"rye-grain-spawn","title":"Rye Grain Spawn","description":"\u003cp\u003eOur premium rye grain spawn is meticulously prepared to give your mushroom cultivation the best possible foundation. Each batch begins with a thorough 24-hour soak \u003cmeta charset=\"utf-8\"\u003ein our double-filtered water, allowing the grains to absorb moisture and become primed for colonisation. We then gently simmer the grains to the perfect consistency before subjecting them to rigorous autoclaving in our professional-grade sterilisers. This multi-stage preparation process eliminates competing contaminants whilst preserving the nutritional integrity of the rye. The result is a clean, nutrient-rich substrate that colonises quickly and reliably, whether you're cultivating oyster, shiitake, or specialty varieties. Our rye grain spawn delivers consistent results for both experienced cultivators and those just beginning their mushroom growing journey.\u003c\/p\u003e","brand":"westcoastmushrooms","offers":[{"title":"1 kg","offer_id":56830475338110,"sku":null,"price":13.49,"currency_code":"GBP","in_stock":true},{"title":"1.5 kg","offer_id":56830475370878,"sku":null,"price":15.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/3477\/2606\/files\/WCM_Test-080.jpg?v=1778599972"},{"product_id":"millet-grain-spawn","title":"Millet Grain Spawn","description":"\u003cp\u003eMillet grain spawn represents the foundation of successful mushroom cultivation. Our premium millet is carefully selected and prepared through a rigorous multi-stage process designed to maximise colonisation rates and minimise contamination risk. Each batch begins with a thorough 24-hour soak \u003cmeta charset=\"utf-8\"\u003ein our double-filtered water, allowing the grain to absorb moisture evenly and prepare for the next stages. The millet is then gently simmered to achieve optimal moisture content and texture — crucial for mycelium penetration and rapid growth. Finally, everything is sterilised in our professional-grade autoclaves under precise temperature and pressure conditions, eliminating competing organisms and pathogens. The result is clean, viable spawn ready to inoculate your substrate. Whether you're cultivating oyster, shiitake, or lion's mane varieties, our millet grain provides the reliable foundation serious growers depend on. Each batch is quality-checked to ensure consistent performance across your cultivation projects.\u003c\/p\u003e","brand":"westcoastmushrooms","offers":[{"title":"1 kg","offer_id":56830475829630,"sku":null,"price":13.49,"currency_code":"GBP","in_stock":true},{"title":"1.5 kg","offer_id":56830475862398,"sku":null,"price":15.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/3477\/2606\/files\/WCM_Test-103.jpg?v=1778599973"},{"product_id":"popcorn-grain-spawn","title":"Popcorn Grain Spawn","description":"\u003cp\u003ePopcorn grain spawn represents a time-tested choice for mushroom cultivators seeking reliable colonisation. Our grains are meticulously prepared through a 24-hour soak\u003cmeta charset=\"utf-8\"\u003ein our double-filtered water, gentle simmering, and professional autoclaving to ensure complete sterilisation. This multi-stage process eliminates competing organisms whilst preserving the nutritional integrity of the grain, creating an ideal medium for vigorous mycelium development. The uniform size and consistent moisture content of popcorn grains promote even colonisation across your spawn batch. Whether you're expanding your culture or preparing substrate for fruiting, this spawn delivers the clean, contaminant-free foundation serious growers depend on. Ready to inoculate with your chosen culture.\u003c\/p\u003e","brand":"westcoastmushrooms","offers":[{"title":"1 kg","offer_id":56830476222846,"sku":null,"price":13.49,"currency_code":"GBP","in_stock":true},{"title":"1.5 kg","offer_id":56830476255614,"sku":null,"price":15.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/3477\/2606\/files\/WCM_Test-090.jpg?v=1778599971"},{"product_id":"mixed-seed-grain-spawn","title":"Mixed Seed Grain Spawn","description":"\u003cp\u003eOur premium mixed seed grain spawn is meticulously prepared to give your mushroom cultivation the best possible foundation. Each batch begins with a careful 24-hour soak in our double-filtered water, ensuring optimal hydration and nutrient absorption from the start. The grains are then gently simmered to activate their structure and improve colonisation rates, followed by thorough sterilisation in our professional-grade autoclaves. This multi-stage process eliminates competing organisms and contaminants, creating a clean, reliable substrate that's ready to inoculate. Whether you're cultivating oyster, shiitake, or specialty varieties, our mixed grain blend provides excellent nutrition and colonisation speed. The result is vigorous mycelium growth and healthier fruiting bodies, giving you confidence in every cultivation cycle.\u003c\/p\u003e","brand":"westcoastmushrooms","offers":[{"title":"1 kg","offer_id":56830531142014,"sku":null,"price":13.49,"currency_code":"GBP","in_stock":true},{"title":"1.5 kg","offer_id":56830531174782,"sku":null,"price":15.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/3477\/2606\/files\/WCM_Test-096.jpg?v=1778599971"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/3477\/2606\/collections\/IMG_1019.jpg?v=1778749415","url":"https:\/\/westcoastmushrooms.co.uk\/collections\/sterile-substrates-grains.oembed","provider":"West Coast Mushrooms","version":"1.0","type":"link"}