Spawn & Substrates

Black Pearl King is a hybrid of Oyster and King Oyster. It pairs the speed and vigor of an oyster with the thick, meaty stem of a king, under dark gray-black caps that stand out wherever you sell them. HybridSpecies ~5 lbColonized grain 60–70°FFruiting temp Beginner+Skill level 12–13Master's Mix bags Why grow Black Pearl King from our spawn Best of both Oyster-like colonization speed with king-oyster substance and flavor. Forgiving A robust hybrid that tolerates small mistakes. Distinctive...

Blue Oyster is one of the fastest, most aggressive colonizers you can grow, which is why commercial farms and first-time growers both rely on it. Caps open blue-gray and lighten to a silvery tan as they mature. P. ostreatusSpecies ~5 lbColonized grain 55–65°FFruiting temp BeginnerSkill level 12–13Master's Mix bags Why grow Blue Oyster from our spawn Outruns problems Aggressive mycelium claims the substrate quickly, leaving little room for contaminants. Heavy yields A forgiving, productive...

Chestnut grows clusters of golden-brown caps with a crunchy texture and a sweet, nutty flavor. Unlike delicate oysters, it keeps well after harvest, which makes it a practical choice for market and restaurant sales. P. adiposaSpecies ~5 lbColonized grain 50–65°FFruiting temp IntermediateSkill level 12–13Master's Mix bags Why grow Chestnut from our spawn Stores well Holds up after harvest far better than delicate oysters. Cool-room grower Fruits at 50–65°F. Great texture Crunchy, with a sweet,...

Golden Oyster fruits in bright yellow clusters with a nutty, cashew-like aroma. It colonizes quickly, produces heavily and likes warmth, so it's a natural summer crop with color that stands out at the market. P. citrinopileatusSpecies ~5 lbColonized grain 65–80°FFruiting temp BeginnerSkill level 12–13Master's Mix bags Why grow Golden Oyster from our spawn Warm-season grower Fruits at 65–80°F, when cooler species slow down. Fast and prolific Quick colonization and generous clusters....

King Blue is the cold-loving cousin of the classic Blue Oyster. It forms firm clusters of deep slate-blue caps with thicker, meatier flesh and a longer shelf life, and it keeps fruiting in cool, unheated spaces through fall and winter. P. columbinusSpecies ~5 lbColonized grain 45–65°FFruiting temp BeginnerSkill level 12–13Master's Mix bags Why grow King Blue from our spawn Cold-weather fruiter Fruits from 45 to 65°F, cooler than standard Blue Oyster. Meatier texture Thicker flesh and firmer...

King Oyster (Pleurotus eryngii) is grown for its thick, meaty stems. Their firm, scallop-like texture holds up to searing, roasting and grilling, and the mild umami flavor makes them a restaurant favorite. P. eryngiiSpecies ~5 lbColonized grain 60–70°FFruiting temp IntermediateSkill level 12–13Master's Mix bags Why grow King Oyster from our spawn Restaurant quality Substantial fruits with a firm bite. Sawdust grower Best on Master's Mix or supplemented hardwood sawdust. Worth the...

Lion's Mane is prized in the kitchen for its tender texture and mild, seafood-like flavor, and it's just as popular as a functional mushroom. This bag arrives fully colonized with bright white, cottony mycelium, ready to spawn into Master's Mix or supplemented hardwood. H. erinaceusSpecies ~5 lbColonized grain 60–70°FFruiting temp BeginnerSkill level 12–13Master's Mix bags Why grow Lion's Mane from our spawn Beginner-friendly Straightforward to grow from colonized spawn, fruiting at 60–70°F....

Maitake, also called Hen of the Woods, forms large rosettes of feathery fronds with a rich, earthy flavor, and it has a strong reputation as a functional mushroom. It's slower and more demanding than most, so it's best for growers with a few harvests behind them. G. frondosaSpecies ~5 lbColonized grain 55–65°FFruiting temp AdvancedSkill level 12–13Master's Mix bags Why grow Maitake from our spawn Showpiece harvest Big, layered rosettes that stand out in any kitchen. Gourmet and...

Myco Labs Premium CVG is a pasteurized, ready-to-use bulk substrate: coco coir, vermiculite and gypsum, buffered with hydrated lime and finished with Azomite trace minerals. It arrives already hydrated to field capacity, so the only thing you add is colonized grain spawn. The 2 lb bag is sized for small grows: a shoebox tub, a small tray, a casing layer or a top-up, without opening more substrate than you need. 2 lbPer bag CVGCoir, vermiculite, gypsum PasteurizedNo prep needed 2:1–3:1Substrate...

Myco Labs Premium CVG is a pasteurized, ready-to-use bulk substrate: coco coir, vermiculite and gypsum, buffered with hydrated lime and finished with Azomite trace minerals. It arrives already hydrated to field capacity, so the only thing you add is colonized grain spawn. One 5 lb bag fills a Small 28Q monotub with a single bag of colonized grain spawn. 5 lbPer bag CVGCoir, vermiculite, gypsum PasteurizedNo prep needed 2:1–3:1Substrate to grain Up to 6 moSealed, refrigerated Why grow in our...

Myco Labs Premium CVG is a pasteurized, ready-to-use bulk substrate: coco coir, vermiculite and gypsum, buffered with hydrated lime and finished with Azomite trace minerals. It arrives already hydrated to field capacity, so the only thing you add is colonized grain spawn. The 7.5 lb bag is measured to fill a Medium 44Q monotub in one go, so there's no half bag left over. 7.5 lbPer bag CVGCoir, vermiculite, gypsum PasteurizedNo prep needed 2:1–3:1Substrate to grain Up to 6 moSealed,...

Each bag in this 2-pack holds about 2 quarts (2.25–2.5 lb) of rye berries, red and white milo, and red and white millet, hydrated and pressure-sterilized in our lab and sealed in a filter-patch bag with a self-healing injection port. Inject your liquid culture or spores, let it colonize, and you have a bag of spawn ready to break into bulk substrate. 2 bagsPer pack ~2 qtPer bag (2.25–2.5 lb) 5 grainsRye, milo, millet 0.22 µmFilter patch 18 PSI180-minute sterilization Why a five-grain mix Big...

A 6 lb sterilized grow bag built for wood-loving species, with the liquid culture included. The grain spawn sits on top of a hardwood, soy hull and bamboo substrate inside one filter bag. Inject the culture, let the grain run, shake it through the substrate and fruit. Pick your strain from the menu above. 6 lbTotal weight 10ccLiquid culture included 20+Strains to choose 10–14 daysGrain colonization 1–2 weeksBulk re-colonization Why this bag The right substrate for wood lovers Lion's mane,...

Pearl White is the classic gourmet oyster: fast, forgiving and productive, with a mild flavor that works in almost any dish. Its wide temperature range makes it a dependable year-round crop at any scale. P. ostreatusSpecies ~5 lbColonized grain 55–75°FFruiting temp BeginnerSkill level 12–13Master's Mix bags Why grow Pearl White from our spawn Widest range Fruits anywhere from 55 to 75°F, the broadest window of our oysters. Year-round staple Reliable enough to anchor a home grow or a small...

Pink Oyster is the fastest colonizer of all the oysters. It loves warm weather and fruits heavily in ruffled, bright pink clusters that turn savory, almost bacon-like, when cooked until crisp. P. djamorSpecies ~5 lbColonized grain 65–85°FFruiting temp BeginnerSkill level 12–13Master's Mix bags Why grow Pink Oyster from our spawn Fastest oyster Very quick, aggressive colonization. Built for heat Fruits at 65–85°F, when most species struggle. Big yields Heavy flushes of ruffled pink clusters. A...

Pioppino grows clusters of bronze-brown caps on crisp white stems, with a rich, nutty, slightly peppery flavor. It holds its texture in the pan and keeps better than most gourmet varieties, which has made it a long-time chef favorite. A. aegeritaSpecies ~5 lbColonized grain 55–65°FFruiting temp IntermediateSkill level 12–13Master's Mix bags Why grow Pioppino from our spawn Chef favorite Firm texture and a nutty, peppery flavor. Keeps well Stores better after harvest than most gourmet...

Red Reishi (Ganoderma lucidum) is the classic lacquered, deep-red polypore and one of the most recognized functional mushrooms. It's tough and contamination-resistant on grain, then rewards a long, warm fruiting cycle with either branching antlers or flat conks. G. lucidumSpecies ~5 lbColonized grain 70–85°FFruiting temp IntermediateSkill level 12–13Master's Mix bags Why grow Red Reishi from our spawn Hard to contaminate Dense, vigorous mycelium that's easy to colonize. You choose the...

Shiitake brings deep, savory umami and a meaty texture, which is why it's a kitchen staple around the world. It takes longer than oysters, including a browning phase before fruiting, but rewards patience with restaurant-quality harvests. L. edodesSpecies ~5 lbColonized grain 55–70°FFruiting temp IntermediateSkill level 12–13Master's Mix bags Why grow Shiitake from our spawn Restaurant quality Rich umami and a firm, meaty bite. Built for blocks Best on supplemented hardwood sawdust or Master's...

Turkey Tail is a multicolored, fan-shaped polypore and one of the most widely studied functional mushrooms. It colonizes grain and bulk substrate fast, and as a natural wood decomposer it does well on blocks and logs. T. versicolorSpecies ~5 lbColonized grain 55–75°FFruiting temp BeginnerSkill level 12–13Master's Mix bags Why grow Turkey Tail from our spawn Fast colonizer Aggressive mycelium that's easy to get going. Wood lover Runs on Master's Mix, supplemented hardwood sawdust or hardwood...

A 4 lb sterilized grow bag that holds the grain spawn and the bulk substrate in one sealed bag. Inject spores or liquid culture, let the grain colonize, shake it through the substrate and fruit right from the bag. No pasteurizing, no tub prep and no open-air spawn transfer. 4 lbTotal weight 1.75 lbGrain spawn 2.25 lbCVG substrate 0.22 µmFilter patch 180 minPressure-sterilized Built for growers who have done this before No spawn transfer The spawn-to-bulk transfer is where most grows go wrong....

The XL version of our manure-loving All-in-One Bag: 6 lb total, with a larger spawn layer and nearly twice the bulk substrate of our 4 lb bag. Inject spores or liquid culture, let the grain colonize, shake it through the substrate and fruit right from the bag, or break it into a tub. 6 lbTotal weight 2 lb5-grain spawn 4 lbCVG substrate ~1:2Grain to substrate 0.22 µmFilter patch Why go XL More substrate, bigger flushes 4 lb of CVG gives pins more surface and later flushes more to feed on,...

The All-in-One Monotub Starter Kit pairs our 4 lb All-in-One grow bag with a Grower's Select 28Q monotub and 2 lb of extra CVG substrate. Colonize in the sterile bag, then move it into the tub for a much bigger fruiting surface. It's the easiest step from bag growing to monotubs, and everything fits in a 12" x 12" footprint. 6 lbGrain + substrate 4 lbAll-in-One bag 28QMonotub, 12" cube 2 lbExtra CVG 4 + 4Filter disks + plugs Why growers pick the starter kit Bag simplicity, tub surface Colonize...

Our Original Rye bags are sterilized grain spawn, ready to inoculate the day they arrive. Each bag holds 2.25–2.5 lb of organic rye berries in a filter-patch bag with a self-healing injection port. Add spores or liquid culture, let it colonize, then spawn it to bulk. Rye is the classic spawn grain: uniform kernels, good moisture and plenty of nutrition. We soak every batch for about 16 hours in mineral water, simmer it, finish it with gypsum and pressure-sterilize the bags for 3 hours in our...

Five pounds of Master's Mix, a hardwood sawdust and soy hull substrate that comes pre-hydrated, pH-balanced and pressure sterilized in a sealed filter patch bag. Add your colonized grain spawn, reseal and let it colonize. There is no mixing, hydrating or pressure cooking on your end. Master's Mix is the standard substrate for lion's mane, oysters, pioppino, chestnut, shiitake and other wood-loving gourmet and medicinal mushrooms. 5 lbSterilized substrate 15 PSI250 F 3.5 hrsSterilization 0.5...