Redwood Mushroom Supply Grey Oyster Mushroom Liquid Culture

Grey Oyster (Pleurotus pulmonarius) Liquid Culture Syringe

A versatile staple for the gourmet grower. The Grey Oyster mushroom is widely considered one of the easiest and most rewarding species to cultivate. Known for its aggressive colonization and high yield potential, this strain is the perfect starting point for beginners while remaining a must-have staple for professional cultivators. Prepared in-house by Redwood Mushroom Supply (RMS), this liquid culture is optimized for vigor and year-round performance.

High Yields & Culinary Versatility

Our Grey Oyster strain produces beautiful clusters of fan-shaped, off-white to grey fruit bodies. It is prized for its delicate texture and mild savory flavor, making it a seamless addition to almost any culinary dish. In our RMS grow trials, this resilient strain consistently produced 1-2 lbs of fresh mushrooms per 5 lb block and demonstrated an impressive ability to produce multiple flushes across a wide range of temperatures.

Fruiting Parameters

• Temperature: 65-75°F (Wide tolerance)
• Humidity: 85-90%
• Fresh Air (FAE): High
• CO2 Tolerance: 400-800 ppm

Storage & Maintenance

• Refrigeration: Viable up to 6 months
• Room Temp: Use within 1-3 weeks
• Substrate: Masters Mix, Hardwood, or Straw
• Safety: Do not freeze; avoid direct sunlight

The Redwood Mushroom Supply Process

We utilize a pharmaceutical-grade workflow to ensure your genetics arrive vigorous and contaminant-free:

• Early-Generation Genetics: Cultures are expanded from early-generation slants to ensure explosive colonization speeds.
• Lab-Grade Standards: All media is sterilized with medical-grade equipment and high-quality inputs.
• Quality Control: Each batch is hand-packaged in a clean-air environment, batch-tracked, and quality-assured for peak performance.

Usage & Inoculation

This aggressive wood-loving species can be injected directly into wood-based substrate bags (10mL for 3lb+ bags) or grain jars (3-5mL) for further expansion. For the highest success rate, always work within a still-air box or under a laminar flow hood and thoroughly disinfect all surfaces and tools with 70% isopropyl alcohol. Flame-sterilize the needle between multiple inoculations.

Technical Specifications

FINAL SALE NOTICE: Due to the delicate nature of live cultures, all sales are final. We cannot accept returns or exchanges on liquid culture products.