{"title":"King Oyster","description":"Want to grow king oyster mushrooms? North Spore has everything you need to grow indoors and outdoors -- from USDA-certified organic king oyster mushroom fruiting blocks to plug spawn, sawdust spawn, grain spawn, and liquid culture syringes.","products":[{"product_id":"grow-your-own-king-trumpets","title":"Organic King Trumpet Mushroom Grow Kit Fruiting Block","description":"\u003cp data-mce-fragment=\"1\"\u003eOur king trumpet \u003cem\u003e(Pleurotus eryngii)\u003c\/em\u003e fruiting blocks feature a strain that produces large flushes of meaty and delicious mushrooms that are earthy, aromatic, and savory. Raw king trumpets, though dense and spongy in texture, lack aroma and flavor. But when cooked, they come to life with a soft crunchy texture and a mild savory umami flavor reminiscent of abalone.\u003c\/p\u003e","brand":"North Spore","offers":[{"title":"1-Pack","offer_id":44820883996774,"sku":"BLOCK-PE1","price":29.99,"currency_code":"USD","in_stock":true},{"title":"4-Pack","offer_id":44820884029542,"sku":"BLOCK-PE1-4CT","price":80.0,"currency_code":"USD","in_stock":true},{"title":"8-Pack","offer_id":44820884062310,"sku":"BLOCK-PE1-8CT","price":120.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2418\/8179\/files\/fruiting-block-organic-king-trumpet-mushroom-grow-kit-fruiting-block-1202701258.png?v=1762215522"},{"product_id":"king-trumpet-grain-spawn","title":"Organic King Trumpet Mushroom Grain Spawn","description":"\u003cdiv data-mce-fragment=\"1\" class=\"product-description rte\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003eOur USDA-certified organic king trumpet \u003cem data-mce-fragment=\"1\"\u003e(Pleurotus eryngii)\u003c\/em\u003e grain spawn features a strain that produces large flushes of meaty and delicious mushrooms that are earthy, aromatic, and savory. Raw king trumpets, though dense and spongy in texture, lack aroma and flavor. But when cooked, they come to life with a soft crunchy texture and a mild savory umami flavor reminiscent of abalone.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eUnlike other oyster varieties, king trumpets can be more difficult because they prefer cooler temperatures and are prone to drying out or stopping their growth if humidity is not maintained in the early stages. Additionally, King trumpets do not reliably produce second flushes, but may if temperature and humidity conditions are well controlled. Therefore, they are recommended for more advanced growers.\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eRecommended use:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eKing trumpet grain spawn can be used for indoor production using sawdust-based sterile substrate.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eDo not use grain spawn for log inoculation.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eThis is not a mushroom grow kit. King trumpet grain spawn must be combined with a substrate in order to fruit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eUpon receiving your spawn:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eRemove it from the shipping box as soon as possible. Then, unfold the top of the bag, making room for air space. It's also important to check and confirm that the filter patch is not obstructed. This will help the organism breathe and continue to thrive!\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cem data-mce-fragment=\"1\"\u003eScroll down for specifications, growing, and storage guides.\u003c\/em\u003e\u003c\/p\u003e\n\u003cbr\u003e\n\u003c\/div\u003e","brand":"North Spore","offers":[{"title":"Default Title","offer_id":15925985149030,"sku":"GRAIN-PE1","price":29.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2418\/8179\/files\/grain-spawn-organic-king-trumpet-mushroom-grain-spawn-1202701236.png?v=1762216371"},{"product_id":"black-king-mushroom-ready-to-grow-fruiting-block-kit","title":"Organic Black King Mushroom Grow Kit Fruiting Block","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eOur black king \u003cem\u003e(Pleurotus spp.) \u003c\/em\u003efruiting block features a strain that produces some of the heartiest mushrooms available for indoor cultivation. This hybrid strain grows mushrooms that are succulent and savory like blue oysters, but with the dense texture of a king trumpet. Black kings are less finicky than king trumpets and grow very well indoors. When cultivated successfully, you can expect a large harvest of meaty and delicious mushrooms. However, they prefer cooler temperatures and are prone to drying out or stopping their growth if humidity is not maintained when the mushrooms are still in their early stages.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"North Spore","offers":[{"title":"1-Pack","offer_id":44820873445478,"sku":"BLOCK-PSP1","price":29.99,"currency_code":"USD","in_stock":false},{"title":"4-Pack","offer_id":44820873478246,"sku":"BLOCK-PSP1-4CT","price":80.0,"currency_code":"USD","in_stock":false},{"title":"8-Pack","offer_id":44820873511014,"sku":"BLOCK-PSP1-8CT","price":120.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2418\/8179\/files\/fruiting-block-organic-black-king-mushroom-grow-kit-fruiting-block-1202701255.png?v=1762216119"},{"product_id":"black-king-mushroom-grain-spawn-certified-organic-6-lbs","title":"Organic Black King Mushroom Grain Spawn","description":"\u003cp\u003eOur USDA-certified organic black king \u003cem\u003e(Pleurotus spp.) \u003c\/em\u003egrain spawn features a strain that produces hearty mushrooms with beautiful brown marbled caps and soft stems. When cultivated successfully, you can expect a large harvest of very meaty and delicious mushrooms. Black kings offer the hearty texture of king trumpets, but the growth style of a regular oyster. They prefer cooler temperatures and are prone to drying out or stopping their growth if humidity is not maintained when the mushrooms are still in their early stages. They require high CO2 to achieve delicate, long stems, but can also be fruited like oysters. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRecommended use:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBlack king grain spawn can be used for indoor production using sawdust-based sterile substrate.\u003c\/li\u003e\n\u003cli\u003eDo not use grain spawn for log inoculation.\u003c\/li\u003e\n\u003cli\u003eThis is not a mushroom grow kit. Black king grain spawn must be combined with a substrate in order to fruit. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eUpon receiving your spawn:\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRemove it from the shipping box as soon as possible. Then, unfold the top of the bag, making room for air space. It's also important to check and confirm that the filter patch is not obstructed. This will help the organism breathe and continue to thrive!\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eScroll down for specifications, growing, and storage guides.\u003c\/em\u003e\u003c\/p\u003e","brand":"North Spore","offers":[{"title":"Default Title","offer_id":39513029967974,"sku":"GRAIN-PSP1","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2418\/8179\/files\/grain-spawn-organic-black-king-mushroom-grain-spawn-1202701239.png?v=1762216121"},{"product_id":"king-trumpet-mushroom-agar-plate-culture","title":"King Trumpet Mushroom Plate Culture","description":"\u003cp\u003ePlate cultures are ideal for growers looking to make master bags, inoculate grain, make liquid culture, or make more plates.\u003c\/p\u003e\n\u003cp\u003eOur king trumpet plates are made to order in our in-house lab using medical-grade petri dishes. If properly stored upon arrival, they have a shelf life of approximately 6 months. King trumpet plates should be stored in the refrigerator to maintain viability. Note that mycelium cultures require basic lab skills. Handle using sterile technique to prevent contamination.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eFor complete descriptions of available king trumpet strains, click on the names below. \u003c\/em\u003e\u003c\/p\u003e","brand":"North Spore","offers":[{"title":"NSPE1 - Stephen King Trumpet (Pleurotus eryngii)","offer_id":39621123506278,"sku":"CULTURE-PE1","price":74.99,"currency_code":"USD","in_stock":true},{"title":"NSPE2 - Biggy King Trumpet (Pleurotus eryngii)","offer_id":39621123539046,"sku":"CULTURE-PE2","price":74.99,"currency_code":"USD","in_stock":true},{"title":"NSPE3 - King Trumpet (Pleurotus eryngii)","offer_id":39621123571814,"sku":"CULTURE-PE3","price":74.99,"currency_code":"USD","in_stock":true},{"title":"NSPE4 - WI King Trumpet (Pleurotus eryngii)","offer_id":39621123604582,"sku":"CULTURE-PE4","price":74.99,"currency_code":"USD","in_stock":true},{"title":"NSPE5 - Cap 'n Stem King Trumpet (Pleurotus eryngii)","offer_id":40771004104806,"sku":"CULTURE-PE5","price":74.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2418\/8179\/products\/culture-king-trumpet-mushroom-plate-culture-29456245456998.jpg?v=1762458402"},{"product_id":"king-trumpet-mushroom-liquid-culture-syringe","title":"Organic King Trumpet Mushroom Liquid Culture Syringe","description":"\u003cp data-mce-fragment=\"1\"\u003eThis King Trumpet PE1 \u003cem\u003e(\u003c\/em\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cem\u003ePleurotus eryngii)\u003c\/em\u003e \u003c\/span\u003emushroom strain originates from Japan and produces mushrooms with large stems and small tan caps. It is a reliable commercial strain that is more tolerant of warm temperatures (although it still fruits best in cooler weather.) Yield averages are .75-1.5 lb first flush off of 5 lb supplemented sawdust blocks. \u003cspan data-mce-fragment=\"1\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cem\u003eOur liquid culture syringes are ~10ml and come with a sterile 16 gauge needle and alcohol wipe. \u003c\/em\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong\u003eAbout liquid culture syringes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eLiquid culture syringes are mycelium colonized in a nutrient-rich broth. They are beginner-friendly and ideal for those looking for an easy way to inoculate grain bags and jars. Handle using sterile technique to prevent contamination. \u003c\/p\u003e","brand":"North Spore","offers":[{"title":"Default Title","offer_id":39627239784550,"sku":"LC-PE1","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2418\/8179\/files\/culture-organic-king-trumpet-mushroom-liquid-culture-syringe-1203144089.png?v=1762395647"},{"product_id":"black-king-mushroom-liquid-culture-syringe","title":"Organic Black King Mushroom Liquid Culture Syringe","description":"\u003cp data-mce-fragment=\"1\"\u003e'Marbled' black king \u003cem data-mce-fragment=\"1\"\u003e(Pleurotus spp.)\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003c\/em\u003e-- also called black pearl king -- is a reliable commercial strain that grows some of the heartiest mushrooms with beautiful brown marbled caps and soft stems. When cultivated successfully, you can expect a large harvest of very meaty and delicious mushrooms. This strain is a cross between oyster and king trumpets from Japan. It prefers cooler temperatures and is prone to drying out or stopping growth if humidity is not maintained when the mushrooms are still in their early stages. Yield averages are .75-1.5 lb first flush off of 5 lb supplemented sawdust blocks. \u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eOur liquid culture syringes are ~10ml and come sealed in a plastic sleeve with a sterile 16 gauge needle and alcohol wipe.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eAbout liquid culture:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eLiquid culture is mycelium suspended in a nutrient-rich medium. Syringes are beginner-friendly and ideal for those looking for an easy way to inoculate grain bags and jars. \u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eUsing liquid culture:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eFor best results, refrigerate upon receipt. Syringes should be inserted into a self-healing injection port. Always handle using sterile technique and shake thoroughly before use. We recommended inoculation in either a still air box or flow hood to reduce the possibility of contamination. If you plan to re-use your needle, sterilize before and after each subsequent use.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cem\u003e\u003cbr\u003e\u003c\/em\u003e\u003c\/p\u003e","brand":"North Spore","offers":[{"title":"Default Title","offer_id":39627460116582,"sku":"LC-Psp1","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2418\/8179\/files\/culture-organic-black-king-mushroom-liquid-culture-syringe-1203144099.png?v=1762395650"},{"product_id":"black-king-plant-grow-garden-block","title":"Black King Oyster 'Plant \u0026 Grow' Mushroom Starter Block","description":"\u003cp\u003e\u003cem\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/em\u003e\u003cstrong\u003ePleurotus spp.\u003c\/strong\u003e\u003cem\u003e\u003cspan\u003e \u003c\/span\u003e| USDA Certified Organic\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMethod Skill Level\u003c\/strong\u003e: Beginner\u003cbr\u003e\u003cstrong\u003eSpecies Skill Level\u003c\/strong\u003e: Beginner\u003c\/p\u003e\n\u003cp\u003eDiscover one of the heartiest mushrooms for your garden with our\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eBlack King Oyster  Plant \u0026amp; Grow\u003csup\u003eTM\u003c\/sup\u003e Mushroom Starter Block\u003c\/em\u003e. This USDA Certified Organic hybrid combines the savory succulence of blue oysters with the dense, meaty texture of king trumpets, offering a rich and satisfying mushroom experience straight from your soil.\u003c\/p\u003e\n\u003cp\u003eBlack Kings prefer cooler, shaded spots and need consistent humidity to thrive—especially during their early fruiting stages. When buried outdoors in the right conditions, they reward growers with large, meaty harvests. While they require a bit more attention to moisture than some oyster varieties, their robust flavor and texture make them well worth the effort.\u003c\/p\u003e\n\u003cp\u003eIdeal for gardeners ready to take on a slightly more involved but highly rewarding mushroom variety.\u003c\/p\u003e","brand":"North Spore","offers":[{"title":"1-Pack","offer_id":44645522276454,"sku":"GBLOCK-PSP1","price":29.99,"currency_code":"USD","in_stock":true},{"title":"4-Pack","offer_id":44645522309222,"sku":"GBLOCK-PSP1-4CT","price":80.0,"currency_code":"USD","in_stock":false},{"title":"8-Pack","offer_id":44645522341990,"sku":"GBLOCK-PSP1-8CT","price":120.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2418\/8179\/files\/fruiting-block-black-king-oyster-plant-grow-mushroom-starter-1220798168.png?v=1770934946"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2418\/8179\/collections\/commercial-spawn-commercial-king-trumpet-mushroom-fruiting-block-31841731346534.jpg?v=1762264328","url":"https:\/\/northspore.com\/en-si\/collections\/king-trumpet.oembed","provider":"North Spore","version":"1.0","type":"link"}