Mossy — King Blue OysterLiquid Culture 3cc

King Blue Oyster Mushroom Liquid Culture 3cc Syringe

Bring home one of the best-loved oyster crosses in North American cultivation with this king blue oyster 3cc liquid culture syringe. King blue oyster is a Pleurotus ostreatus hybrid bred by Andrew Reed of Mossy Creek Mushrooms in Tennessee — a blue oyster crossed with a white elm oyster — producing thick-stemmed, blue-grey clusters that hold up beautifully in the kitchen. Lab-isolated genetics, made in Canada at our CFIA-licensed facility in Brantford, Ontario.

What You Get

• One 3cc syringe containing live king blue oyster mycelium in sterile honey-water medium
• Lab-isolated hybrid genetics — clean, vigorous, and ready to grow
• Sealed for immediate inoculation or refrigerated storage

How to Use

This mushroom culture syringe is straightforward to work with:

• Inoculate grain spawn — inject into sterilized grain jars or bags to create your own king blue oyster spawn
• Transfer to agar — drop onto pre-made agar plates for isolation work, sector selection, or archiving your culture
• Expand into liquid culture — add to sterile nutrient broth to multiply your culture before large-scale inoculation

Best results come from working in a still air box or laminar flow hood. Sterilize injection ports and work surfaces with isopropyl alcohol.

Species Profile

King blue oyster was the first cross created by Mossy Creek Mushrooms: a blue oyster crossed with a white elm oyster, pairing blue colouring with the elm oyster's large, thick stems. It fruits in dense, heavy clusters of blue-grey caps on sturdy white stems with a firm, meaty texture and a deep savoury flavour. It performs well on supplemented hardwood sawdust or straw across a wide temperature range, though it does best kept below about 29°C. A versatile, high-yielding choice with very little trim waste.

Storage & Shelf Life

Store in the refrigerator at 2-8°C. The culture stays viable for several months, but inoculating within 60 days will give you the fastest colonization times. Let the syringe warm to room temperature before use.

Want to jump ahead? Our grain spawn is ready to mix into your substrate, or try a grow kit for the easiest route from purchase to harvest.