King Trumpet Grain Spawn

Regular price $19.95

Availability

Thick, meaty stems that sear like scallops.

Two ways to order:

  • Made fresh to order (ships in 3–4 weeks): We inoculate your bag after you order, so it arrives fully colonized and at peak vigor instead of aging on a shelf.
  • Ready to ship (ships in 1–3 days): When we have a fresh batch on hand, you can skip the wait. If it shows sold out, choose made fresh to order.

King Trumpet (Pleurotus eryngii), also called King Oyster, is the heavyweight of the oyster family. Instead of delicate caps, it grows dense, white stems with a firm, almost scallop-like bite and a rich savory flavor. It holds its texture through grilling, searing, and roasting, which makes it a favorite with chefs.

Includes WeMush tracking: Every order ships with a QR code linked to WeMush, our cultivation tracking platform. Scan it to view specimen details, log observations, and follow your grow, free with any Mush Ohio purchase.

Specifications

  • Species: King Trumpet (Pleurotus eryngii)
  • Product: Fully colonized grain spawn
  • Weight: Approximately 1600 g (about 3.5 lb) wet weight
  • Packaging: Filter patch spawn bag
  • Skill level: Intermediate

Cultivation guidelines

  • Substrates: Sterilized supplemented hardwood sawdust or Master's Mix. King Trumpet performs best on sterilized, supplemented media rather than straw.
  • Colonization: 70–75°F (21–24°C) in the dark, typically 2–4 weeks.
  • Fruiting: 55–65°F (13–18°C), 85–90% humidity, and moderate fresh air. Slightly reduced fresh air encourages the thick stems King Trumpet is known for.
  • Harvest: While caps are still slightly domed, before they flatten.

These are general guidelines; optimal conditions vary with your setup.

Storage and handling

  • Inspect the bag on arrival for damage or contamination.
  • If not using right away, refrigerate at 35–40°F (2–4°C).
  • For best results, use within 1–4 weeks of receipt.

Bundle and save: Buy four bags of grain spawn and get the fifth free with code BUY4G1FREE. Mix and match any spawn in our Grain Spawn collection.