Start your mushroom cultivation with our premium King Stropharia Grain Spawn, available in approximately 1.5 kg units. King Stropharia (Stropharia rugosoannulata), also commonly known as Wine Cap, is produced as second-generation (G2) grain spawn from carefully selected commercial fruiting genetics chosen for vigorous mycelial growth, rapid colonization, robust fruiting, excellent biological efficiency, and consistent yields. Each bag contains fully colonized premium corn grain, providing a vigorous inoculum ready for expansion onto pasteurized or sterilized bulk substrates.
Every grain spawn bag is prepared under strict sterile laboratory conditions and inspected before shipment to ensure vigorous, contamination-free colonization. King Stropharia is prized for its distinctive burgundy to reddish-brown caps, thick white stems, rich earthy flavor, and excellent performance in outdoor wood-chip beds and garden environments. Grain spawn is ideal for inoculating wood-chip beds, garden plots, and other suitable outdoor cultivation substrates for reliable mushroom production.
Freshly Prepared:
To ensure maximum viability and vigor, every grain spawn bag is prepared fresh to order. Please allow approximately 2–3 weeks for grain preparation, sterilization, inoculation, complete colonization, quality inspection, and packaging before shipment.
Product Details:
Approximately 1.5 kg fully colonized premium corn grain spawn
Produced as second-generation (G2) grain spawn
Carefully selected commercial fruiting genetics
Prepared under sterile laboratory conditions
Packaged in a heavy-duty Type T Unicorn Bag with a 0.2-micron filter patch
Ready to inoculate pasteurized or sterilized bulk substrates
Intended for gourmet mushroom cultivation
Storage:
For best results, use the grain spawn as soon as possible after arrival. If storage is necessary, keep refrigerated at 2–8°C (35–46°F) and protected from direct light. Do not freeze. Fresh grain spawn provides the most vigorous colonization.
Quality Guarantee:
Every grain spawn bag is visually inspected before shipment to verify vigorous colonization and the absence of visible contamination. If your grain spawn is confirmed to be contaminated upon arrival, contact us promptly with clear photographs within 24 hours of delivery. We will review the claim and, if confirmed, provide a replacement at no additional charge.