{"title":"Substrates","description":"\u003cp\u003eGive your grow the best nutrients with our sterile mushroom substrates.\u003c\/p\u003e","products":[{"product_id":"millet-or-rye-grain-cvg-mushroom-substrate-bundle","title":"Millet or Rye Grain \u0026 CVG Mushroom Substrate Bundle","description":"\u003cp data-pm-slice=\"1 1 []\"\u003e\u003cspan\u003eStock up for your next grow with our mushroom growing supplies bundle, pairing sterilised millet or rye grain with CVG bulk substrate. Choose your preferred grain and bundle size for a convenient addition to your mushroom cultivation setup.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIdeal for growers replenishing their supplies or refilling an existing monotub, this bundle brings grain and substrate together in practical, pre-portioned bags.\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\" style=\"height: 97.969px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 20.5575%; height: 19.5938px;\"\u003e\u003cspan\u003eOption\u003c\/span\u003e\u003c\/th\u003e\n\u003cth style=\"width: 22.9965%; height: 19.5938px;\"\u003e\u003cspan\u003eGrain included\u003c\/span\u003e\u003c\/th\u003e\n\u003cth style=\"width: 35.8885%; height: 19.5938px;\"\u003e\u003cspan\u003eCVG substrate included\u003c\/span\u003e\u003c\/th\u003e\n\u003cth style=\"width: 19.5122%; height: 19.5938px;\"\u003e\u003cspan\u003eTotal weight\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 20.5575%; height: 19.5938px;\"\u003e\u003cspan\u003eRegular Millet\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 22.9965%; height: 19.5938px;\"\u003e\u003cspan\u003e1 × 1.5kg millet\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 35.8885%; height: 19.5938px;\"\u003e\u003cspan\u003e1 × 2kg CVG\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 19.5122%; height: 19.5938px;\"\u003e\u003cspan\u003e3.5kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 20.5575%; height: 19.5938px;\"\u003e\u003cspan\u003eLarge Millet\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 22.9965%; height: 19.5938px;\"\u003e\u003cspan\u003e2 × 1.5kg millet\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 35.8885%; height: 19.5938px;\"\u003e\u003cspan\u003e2 × 2kg CVG\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 19.5122%; height: 19.5938px;\"\u003e\u003cspan\u003e7kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 20.5575%; height: 19.5938px;\"\u003e\u003cspan\u003eRegular Rye\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 22.9965%; height: 19.5938px;\"\u003e\u003cspan\u003e1 × 1.5kg rye\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 35.8885%; height: 19.5938px;\"\u003e\u003cspan\u003e1 × 2kg CVG\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 19.5122%; height: 19.5938px;\"\u003e\u003cspan\u003e3.5kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 20.5575%; height: 19.5938px;\"\u003e\u003cspan\u003eLarge Rye\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 22.9965%; height: 19.5938px;\"\u003e\u003cspan\u003e2 × 1.5kg rye\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 35.8885%; height: 19.5938px;\"\u003e\u003cspan\u003e2 × 2kg CVG\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 19.5122%; height: 19.5938px;\"\u003e\u003cspan\u003e7kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp data-pm-slice=\"1 1 []\"\u003e\u003cstrong\u003e\u003cspan\u003eEssential supplies for mushroom cultivation\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSterilised grain for spawn production:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Choose millet or rye to suit your growing preferences.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eCVG mushroom substrate:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e A blend of coco coir, vermiculite and gypsum that provides a moisture-retaining bulk growing medium.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eConvenient bundle sizes:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Regular supplies one grain bag and one substrate bag; Large doubles both.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eMonotub refill supplies:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Replenish the growing materials for your existing setup.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eThe grain is supplied uninoculated, ready for your chosen compatible mushroom culture. Select a mushroom species suited to CVG substrate.\u003c\/span\u003e\u003c\/p\u003e","brand":"Mushroom Growing Supplies","offers":[{"title":"Regular \/ Millet","offer_id":58151232045438,"sku":"MGS-GK-11-01","price":26.95,"currency_code":"GBP","in_stock":true},{"title":"Regular \/ Rye","offer_id":58151232078206,"sku":"MGS-GK-11-02","price":26.95,"currency_code":"GBP","in_stock":true},{"title":"Large \/ Millet","offer_id":58151232110974,"sku":"MGS-GK-11-03","price":54.95,"currency_code":"GBP","in_stock":true},{"title":"Large \/ Rye","offer_id":58151232143742,"sku":"MGS-GK-11-04","price":54.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1025\/2917\/1838\/files\/Sterile_Millet_Grain_CVG_Bundle_Regular.webp?v=1791121684"},{"product_id":"sterile-cvg-mushroom-substrate-bag","title":"Sterile CVG Mushroom Substrate Bag","description":"\u003cp\u003eOur Sterile CVG Mushroom Substrate Bags provide a clean \u0026amp; nutrient balanced growing medium designed to support healthy mushroom growth after fully colonised grain spawn has been mixed into the substrate.\u003c\/p\u003e\n\u003cp\u003eMade from a carefully prepared blend of premium coco coir, vermiculite \u0026amp; gypsum, each bag is hydrated to optimal field capacity before being professionally sterilised under clean lab conditions. This creates an ideal environment for mycelium expansion helping growers achieve healthy flushes while reducing the risk of contamination.\u003c\/p\u003e\n\u003cp\u003eWhether you're expanding fully colonised grain spawn or producing large monotubs and fruiting blocks, our sterile CVG substrate is ready to use straight from the bag with no mixing or preparation required.\u003c\/p\u003e\n\u003ch2\u003eWhy Choose Our Sterile CVG Substrate Bags?\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp\u003eOur CVG substrate has been developed to provide excellent moisture retention, structure, and aeration which helps consistent growing conditions throughout the colonisation and fruiting process.\u003c\/p\u003e\n\u003ch3\u003eBenefits include:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProfessionally sterilised and ready to use\u003c\/li\u003e\n\u003cli\u003ePremium coco coir, vermiculite and gypsum blend\u003c\/li\u003e\n\u003cli\u003eExcellent moisture retention\u003c\/li\u003e\n\u003cli\u003eSupports strong mycelium growth\u003c\/li\u003e\n\u003cli\u003eReduces preparation time\u003c\/li\u003e\n\u003cli\u003eSuitable for home and commercial growers\u003c\/li\u003e\n\u003cli\u003eProduced under clean laboratory conditions\u003c\/li\u003e\n\u003cli\u003eFast UK dispatch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEach batch is carefully hydrated before sterilisation to provide consistent moisture levels throughout the substrate.\u003c\/p\u003e\n\u003ch2\u003eWhich Mushroom Species Is This Substrate Suitable For?\u003c\/h2\u003e\n\u003cp\u003eOur sterile CVG substrate is best suited to gourmet mushroom species that perform well on coco coir-based substrate blends after colonised grain spawn has been prepared.\u003c\/p\u003e\n\u003ch3\u003eSuitable species include:\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli class=\"MsoNormal\"\u003ePink Oyster Mushroom\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003ePearl Oyster Mushroom\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eBlue Oyster Mushroom\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eGolden Oyster Mushroom\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eElm Oyster Mushroom\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eKing Oyster Mushroom\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eLion's Mane Mushroom\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese species are known for vigorous colonisation and excellent performance on CVG-based substrate.\u003c\/p\u003e\n\u003ch2\u003eHow Do You Use a Sterile CVG Mushroom Substrate Bag?\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eStep 1:\u003c\/strong\u003e Prepare Fully Colonised Grain Spawn\u003cbr\u003eEnsure your grain spawn has completely colonised before opening either bag.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStep 2: \u003c\/strong\u003eMix the Spawn and Substrate\u003cbr\u003eTransfer the fully colonised grain spawn into the sterile CVG substrate bag or a clean mixing container and thoroughly distribute the grain throughout the substrate.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStep 3: \u003c\/strong\u003eAllow Full Colonisation\u003cbr\u003eSeal the substrate and allow the mycelium to colonise the entire block before introducing fruiting conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStep 4:\u003c\/strong\u003e Begin Fruiting\u003cbr\u003eOnce fully colonised, provide fresh air exchange, indirect light, and suitable humidity to encourage healthy mushroom development.\u003c\/p\u003e\n\u003ch2\u003eWhat Is Inside Our CVG Substrate?\u003c\/h2\u003e\n\u003cp\u003eEach sterile substrate bag contains a premium blend of:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCoco coir\u003c\/li\u003e\n\u003cli\u003eVermiculite\u003c\/li\u003e\n\u003cli\u003eGypsum\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe substrate is hydrated to optimal field capacity before being sterilised under controlled laboratory conditions to help maintain consistency and reduce contamination risk.\u003c\/p\u003e\n\u003ch2\u003eWhat Makes Our Sterile CVG Bags Different?\u003c\/h2\u003e\n\u003cp\u003eOur sterile CVG substrate bags are prepared using professional laboratory equipment and carefully selected ingredients to deliver consistent quality from every batch.\u003c\/p\u003e\n\u003ch3\u003eFeatures include:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProfessionally sterilised substrate\u003c\/li\u003e\n\u003cli\u003ePremium natural ingredients\u003c\/li\u003e\n\u003cli\u003eExcellent water retention\u003c\/li\u003e\n\u003cli\u003eConsistent texture and moisture content\u003c\/li\u003e\n\u003cli\u003eDurable mushroom grow bag\u003c\/li\u003e\n\u003cli\u003eReady to use straight from delivery\u003c\/li\u003e\n\u003cli\u003eSuitable for beginner and experienced growers\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHow Should Sterile CVG Bags Be Stored?\u003c\/h2\u003e\n\u003cp\u003eFor best results, we recommend using your sterile CVG substrate soon after delivery.\u003cbr\u003eIf storage is required:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStore in a cool, dry place\u003c\/li\u003e\n\u003cli\u003eKeep away from direct sunlight\u003c\/li\u003e\n\u003cli\u003eKeep the bag sealed until required\u003c\/li\u003e\n\u003cli\u003eDo not freeze\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhen stored correctly, sterile substrate bags can remain usable for several months.\u003c\/p\u003e\n\u003ch2\u003eImportant Information\u003c\/h2\u003e\n\u003ch3\u003e\n\u003cstrong\u003ePlease note:\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThis product contains sterile CVG substrate only.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eGrain spawn, liquid culture, and spores are sold separately.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eGrain spawn must be fully colonised before mixing with the substrate.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Mushroom Growing Supplies","offers":[{"title":"2kg","offer_id":58151234634110,"sku":"MGS-MS-01-01","price":16.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1025\/2917\/1838\/files\/Sterile_CVG_Coco_Coir_Vermiculite_Gypsum.webp?v=1791121711"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1025\/2917\/1838\/collections\/Sterile_CVG_Coco_Coir_Vermiculite_Gypsum_3kg.webp?v=1791121805","url":"https:\/\/mushroomgrowingsupplies.co.uk\/collections\/substrates.oembed","provider":"Mushroom Growing Supplies","version":"1.0","type":"link"}