Couldn't load pickup availability
- Lab tested batch
- Grows or replaced
- Free over $75
- Difficulty
- Beginner
- Fruiting temp
- 55-65°F
- First harvest
- 10-14 days
- Character
- Mild, savoury, firm
Live, lab-tested Blue Oyster liquid culture in a ready-to-inject 10ml syringe. The fastest, most forgiving species we carry — and the one we recommend to first-time growers.
If you are growing your first mushroom, grow this one. Blue Oyster is the workhorse of the cultivation world: it colonizes fast enough to outcompete most contaminants, fruits on nearly any cellulose-based substrate, and produces heavy first flushes without careful coaxing.
The caps emerge a deep slate blue and fade toward silver-grey as they open, growing in dense shelved clusters. The flavor is mild and savory with a firm texture that holds up to high heat, which makes it a genuinely useful kitchen mushroom rather than just an easy one.
Blue Oyster is also the most cold-tolerant species in our range. It will fruit in an unheated garage or basement through winter, when warmer-loving species stall out completely.
At a glance
- Aggressive colonizer that outruns most contamination
- Cold-tolerant — fruits well in cool basements and garages
- Deep blue-grey caps that fade to silver as they mature
- Fruiting temperature: 55-65°F (13-18°C)
Species: Pleurotus ostreatus var. columbinus · Volume: 10ml live liquid culture · Lab-tested, cleanroom-produced
Growing guide
Growing guide
Every order includes a printed step-by-step guide for this exact species — setup, daily care, and harvest timing. Questions mid-grow? Write to us; growing advice is free and answered by people who grow.
Shipping & returns
Shipping & returns
Orders ship within 2 business days in protective packaging. Live cultures are covered by our replacement promise: if yours arrives compromised or fails to colonize, tell us and we will make it right.
Lab testing & quality
Lab testing & quality
Produced in a certified ISO7 cleanroom and batch-tested by an independent licensed laboratory for contamination before shipping. Named species only — never blends.
