Blue Oyster Grain Spawn – Fast & Reliable (1.7 kg / 3L)

Product detailed description

This high-performance grain spawn is loaded with vigorous Pleurotus ostreatus  mycelium, perfect for growing large flushes of beautiful blue oyster mushrooms.

Ideal for use in straw, sawdust, or other pasteurized substrates.

✅ Extremely fast colonization – one of the easiest species to grow
✅ Perfect for buckets, bags, bottles, or DIY setups
✅ Trusted by schools, farms, and home growers

Recommended Substrates:

• Pasteurized straw or sugarcane bagasse

• Hardwood sawdust (sterilized or pasteurized)

• Paper waste or cardboard mixes

Spawn Rate:

• 1:10 standard

• 1:5 for faster, more aggressive colonization

Colonization Conditions:

• Temperature: 22–26°C

• Humidity: ~70%

• Light: Darkness or dim light

• Time: 7–14 days

Fruiting Conditions: See Fruiting Block section above.

Tips for Best Results:

• Use clean but not necessarily sterile substrates (blue oysters tolerate mild contamination)

• Shake the spawn well before use

• Use a breathable fruiting container or cut holes for side growth

Storage: Store refrigerated at 2–4°C. Best within 4–6 weeks.