King Blue Oyster 10cc Liquid Culture Syringe

Massive Caps. Cold-Loving. Superior Cluster Formation.

Take your gourmet cultivation to the next level with the King Blue Oyster (Pleurotus ostreatus var.) 10cc Liquid Culture Syringe from Spore Genetics. Known for its oversized blue-gray caps, dramatic cluster structure, and strong cold-weather performance, King Blue Oyster is a standout choice for growers wanting impressive yields and eye-catching fruiting bodies. This liquid culture isolate thrives in cooler conditions where its color and density are at their best.

Perfect for growers looking to maximize visual appeal and production, especially in colder grow rooms or winter setups.

Cultivation Profile

Growth Characteristics:
Fast colonizer that produces thick stems and wide, heavy caps with a signature blue hue. Excels under cool fruiting temperatures.

Ideal Conditions

Colonization: 55–65°F (13–18°C)

Substrates: Straw, hardwood sawdust, or supplemented sawdust blocks

Fruiting: 50–60°F with 85–95% humidity

Fresh Air: High FAE required to maintain wide caps and prevent stem elongation

Flushes: Typically 2–3+, depending on hydration and airflow

Harvest Timing
Harvest when caps begin to flatten but before edges curl upward. Cooler temps intensify the blue coloration and improve cap density.

What’s Included

· One (1) 10cc BD Luer-Lock Syringe containing live King Blue Oyster mycelium

· One (1) Sterile 16-Gauge Needle

· One (1) Alcohol Prep Pad

· Includes our “How to Use a Gourmet Liquid Culture Syringe” insert with QR code for step-by-step instructions