{"product_id":"brown-oyster-mushroom-spawn","title":"Brown Oyster Mushroom Spawn, 1 Quart Jar","description":"\u003ch2\u003eBrown Oyster Mushroom (\u003cem\u003ePleurotus ostreatus\u003c\/em\u003e) Grain Master\u003c\/h2\u003e\n\u003cp\u003eFor sale is a 1-quart jar of Brown Oyster Mushroom Spawn. This is a generation 1 grain master mushroom spawn jar used for expansion of isolate mycelium, optimized for spawn run times and bio efficiency.\u003c\/p\u003e\n\u003cp\u003eOut Grow isolated this Brown Oyster culture separately from our Pearl line because it is a genuinely different performer. It runs harder, knits tighter, and fruits in heavy brown-capped clusters. Growers who run it once tend to keep running it.\u003c\/p\u003e\n\n\u003ch2\u003eWhat a G1 Grain Master Is\u003c\/h2\u003e\n\u003cp\u003eA grain master is a jar of fully colonized grain made to be transferred, not consumed. Generation 1 means the mycelium in this jar came directly from one of our agar plates rather than from another bag of grain, so it sits one step from the culture library instead of three or four. That matters because every transfer is another opportunity for contamination to ride along, and because a G1 jar still has the full expansion runway ahead of it. One quart can seed several more quarts of sterile grain, and those can seed your bulk substrate.\u003c\/p\u003e\n\n\u003ch2\u003eHow to Use This Jar\u003c\/h2\u003e\n\u003cp\u003eRest, break, recover, transfer. Brown Oyster colonizes with real force and is a strong candidate for grain to grain expansion because it takes over a fresh jar quickly. It spawns to bulk as readily as any other ostreatus.\u003c\/p\u003e\n\u003ch2\u003eBrown Oyster Growing Conditions\u003c\/h2\u003e\n\u003cp\u003eBrown colonizes grain in 10 to 14 days at 70 to 78F and fruits 55 to 75F, the same envelope as Pearl. What is different is the vigour and the look. The caps come in a deep tan to chestnut brown rather than grey, and the clusters run dense and heavy. It behaves as a standard Pleurotus ostreatus in every technical respect, so anything that works for Pearl works here. Treat this as a colour and performance selection rather than a different biology, because that is exactly what it is.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eSpawn run\u003c\/th\u003e\n\u003ctd\u003e70 to 78F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGrain colonization\u003c\/th\u003e\n\u003ctd\u003e10 to 14 days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFruiting temperature\u003c\/th\u003e\n\u003ctd\u003e55 to 75F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSubstrates\u003c\/th\u003e\n\u003ctd\u003eMaster's Mix, pasteurized straw, supplemented hardwood sawdust\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDifficulty\u003c\/th\u003e\n\u003ctd\u003eBeginner\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSeason\u003c\/th\u003e\n\u003ctd\u003eYear round\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eStorage and Shelf Life\u003c\/h2\u003e\n\u003cp\u003eRefrigerate at 35 to 40F. Warm it back to room temperature for a day before transferring. Do not freeze.\u003c\/p\u003e\n\n\u003ch2\u003eIn the Kitchen\u003c\/h2\u003e\n\u003cp\u003eMeatier and darker than Pearl, with a firmer bite that survives longer cooking. Good in braises where a paler oyster would fall apart.\u003c\/p\u003e\n\n\u003ch2\u003eGuarantee and Live Shipping\u003c\/h2\u003e\n\u003cp\u003eEvery jar is inspected before it leaves our lab and guaranteed to arrive alive and contamination free. If it does not, photograph the jar sealed and unopened and contact us within 48 hours of delivery for a replacement or refund. Live spawn is temperature sensitive, so we hold shipments during extreme heat and cold rather than sending something that will not survive the trip.\u003c\/p\u003e\n\u003cp\u003eBrowse the rest of the \u003ca href=\"https:\/\/www.out-grow.com\/collections\/mushroom-spawn\"\u003emushroom spawn collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cdiv class=\"og-internal-links\" style=\"margin-top:16px;padding:16px;background:#f7f4ef;border-top:2px solid #c8d4c4;font-family:'Source Serif 4',Georgia,serif;\"\u003e\n\u003ch3 style=\"font-family:'Libre Baskerville',serif;color:#1a2e1a;margin:0 0 10px;font-size:1.1rem;\"\u003eRelated Resources\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;margin:0;display:grid;grid-template-columns:1fr 1fr;gap:6px 16px;\"\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/mushroom-spawn\" style=\"color:#4a6e42;text-decoration:underline;\"\u003eMushroom Spawn Collection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/pages\/mushroom-species\" style=\"color:#4a6e42;text-decoration:underline;\"\u003eMushroom Species Library\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/pages\/brown-oyster-mushroom-pleurotus-ostreatus\" style=\"color:#4a6e42;text-decoration:underline;\"\u003eBrown Oyster Mushroom (Pleurotus ostreatus) Species Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/pages\/how-to-grow-brown-oyster-mushroom-pleurotus-ostreatus\" style=\"color:#4a6e42;text-decoration:underline;\"\u003eBrown Oyster Mushroom (Pleurotus ostreatus) Grow Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"og-internal-links\" style=\"margin-top:16px;padding:16px;background:#f7f4ef;border-top:2px solid #c8d4c4;font-family:'Source Serif 4',Georgia,serif;\"\u003e\n\u003ch3 style=\"font-family:'Libre Baskerville',serif;color:#1a2e1a;margin:0 0 10px;font-size:1.1rem;\"\u003eRelated Mushroom Spawn\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;margin:0;display:grid;grid-template-columns:1fr 1fr;gap:6px 16px;\"\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pearl-oyster-mushroom-spawn\" style=\"color:#4a6e42;text-decoration:underline;\"\u003ePearl Oyster Mushroom Spawn\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/blue-oyster-mushroom-spawn\" style=\"color:#4a6e42;text-decoration:underline;\"\u003eBlue Oyster Mushroom Spawn\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/king-oyster-mushroom-grain-spawn\" style=\"color:#4a6e42;text-decoration:underline;\"\u003eKing Oyster Mushroom Spawn\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/phoenix-oyster-mushroom-spawn\" style=\"color:#4a6e42;text-decoration:underline;\"\u003ePhoenix Oyster Mushroom Spawn\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Out-Grow","offers":[{"title":"Default Title","offer_id":50439878541505,"sku":"OG-SPAWN-QT-BROWNOYSTER","price":24.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/7287\/5201\/files\/brown-oyster-mushroom-grain-spawn-quart-jar.webp?v=1785008981","url":"https:\/\/www.out-grow.com\/products\/brown-oyster-mushroom-spawn","provider":"Out Grow","version":"1.0","type":"link"}