Blue Oyster Mushroom – Ready-to-Fruit Block (Pleurotus ostreatus)

Product detailed description

Grow your own vibrant Blue Oyster mushrooms at home! This fully colonized 4 kg fruiting block is easy to fruit, fast to harvest, and delivers impressive yields.

Blue Oyster mushrooms are known for their cool blue-gray color, delicate caps, and mild umami flavor that works beautifully in stir-fries, soups, and sautés.

✅ Beginner-friendly and nearly foolproof
✅ Super fast-growing – fruits in under 10 days
✅ Excellent choice for first-time growers or educational projects

How to Fruit:

1. Cut an “X” or "/" into the side of the grow bag 

2. Place in a humid environment and mist 2–3× daily

3. Expect pins in 5–7 days under proper conditions

Fruiting Conditions:

• Temperature: 10–22°C (50–72°F)

• Humidity: 85–95% RH

• CO₂: Below 800 ppm (higher CO₂ causes long stems, small caps)

• Light: 800–1200 lux, 12 hrs/day (indirect daylight is fine)

• Air Exchange: 5–6x/day – oysters love fresh air

Tips for Best Results:

• Mist the surface gently; avoid water pooling

• Provide lots of fresh air – they need it for full cap development

• Harvest clusters before caps flatten or curl upward

• Cold shock will promote faster fruiting

What’s Inside:

• 1x Blue Oyster fruiting block (~4 kg)

• Grown on hardwood sawdust with bran

• Packed in a breathable filter bag

Expected Yield: 1000–1500g over 2–3 flushes
Storage: Use immediately or refrigerate up to 2 weeks