Description
Buy Blue Oyster Ready-to-Fruit Mushroom Block Online – Pleurotus ostreatus var. columbinus
Want to grow blue oyster mushrooms at home without the wait? Our fully colonized blue oyster fruiting blocks skip the 3-4 week colonization period and go straight to producing fresh mushrooms. Just cut, mist, and harvest.
WHY CHOOSE MYCOSOURCE RTF BLOCKS:
• Fully colonized and ready to fruit immediately upon arrival
• Documented genetics with verified performance data
• Professionally prepared on optimized substrate formula
• Fast shipping in insulated packaging to ensure viability
ABOUT BLUE OYSTER MUSHROOMS:
Fast colonizer, wide temp range. Most forgiving oyster variety. Pleurotus ostreatus var. columbinus is perfect for beginners – very forgiving of imperfect conditions.
HOW TO FRUIT YOUR BLUE OYSTER BLOCK:
1. Remove block from box, leave in bag
2. Cut 2-3 slits (3-4 inches long) through the bag where you see white mycelium
3. Place in a humid area with indirect light and fresh air
4. Mist the cuts 2-3 times daily to maintain humidity
5. Harvest when caps begin to flatten (typically 7-14 days)
EXPECTED YIELDS:
• 2 lb block: 0.5-1 lb fresh mushrooms per flush (2-3 flushes typical)
• 5 lb block: 1-2 lbs fresh mushrooms per flush (2-3 flushes typical)
After first harvest, continue misting and expect additional flushes every 10-14 days. Total yield potential is 50-100% of block weight over the block’s lifetime.





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