Chestnut Mushroom Grain Spawn – 3 lb Fully Colonized Sorghum (Milo) For Sale

Elevate your gourmet harvest with vigorous, clean commercial-grade Chestnut Mushroom (Pholiota adiposa) grain spawn. Grown on premium whole sorghum (milo) grain in our sterile lab, this spawn delivers thousands of individual inoculation points per pound, resulting in rapid mycelial run, aggressive colonization, and resilient flushes.
Chestnut mushrooms are a high-value culinary specialty prized for their brilliant copper-gold caps, shaggy scales, and exceptional texture that stays crisp and nutty when cooked. Unlike delicate oyster varieties, chestnuts hold up wonderfully in sautés, soups, and roasting, making them an instant favorite for chefs, farm markets, and home cultivators alike.Key Features & Specifications
Species: Pholiota adiposa (Chestnut Mushroom)
Generation: Second-Generation Grain Spawn (G2) for maximum vigor and low transfer generational age
Substrate Base: 100% Sorghum (Milo), calibrated to field capacity and pressure-sterilized at 15 PSI
Packaging: Heavy-duty gusseted autoclavable filter patch bags
Purity: Inoculated and sealed directly in front of commercial HEPA fan filter units
Cultivation Parameters
Colonization / Incubation Temp: 68°F – 74°F (20°C – 23°C) | 14 to 21 days
Fruiting Temp: 55°F – 65°F (13°C – 18°C) (Chestnuts prefer cooler initiation temps)
Relative Humidity: 85% – 95% during pinhead initiation; 80% – 85% during cap development
Optimal Bulk Substrates: Supplemented hardwood sawdust (80/20 hardwood sawdust and wheat bran) or Master’s Mix (50/50 hardwood sawdust and soybean hulls)
Recommended Inoculation Ratio: 10%–20% spawn rate by weight for rapid runsUse Immediately: For maximum vigor, inoculate your prepared bulk substrate within 7–10 days of arrival.
Cold Storage: If not inoculating immediately, store flat in cold stasis at 38°F – 42°F (3°C – 5°C) for up to 6–8 weeks. Allow the bag to return to room temperature (12–24 hours) prior to breaking and mixing into bulk substrate.