King Oyster Grain Spawn – Premium Culinary Strain (1.7 kg / 3L)

Product detailed description

This spawn contains strong, high-yielding Pleurotus eryngii mycelium. King Oyster grows best on sterilized, nutrient-rich substrates, producing thick-stemmed mushrooms with high market value and excellent flavor.

✅ Reliable for indoor bags, vertical fruiting, or bottle systems
✅ Best colonization with sterilized hardwood + bran substrates
✅ Ideal for serious home growers and commercial farms

Recommended Substrate:

• 80% hardwood sawdust (beech/oak)

• 15–20% wheat or rice bran

• Optional: 1–2% gypsum

• Moisture content: 60–65%

• Must be sterilized (not just pasteurized)

Spawn Rate:

• 1:10 standard

• 1:5 for commercial speed

Colonization Conditions:

• Temperature: 22–24°C

• Time: 10–14 days

• Humidity: 65–70%

• Rest: Let blocks sit 3–5 days after colonization before fruiting

Fruiting Conditions: See grow kit section above

Tips for Best Results:

• King Oyster needs low CO₂ early to form pinheads, then high fresh air to finish development

• Works great in tall bags or bottles for vertical growth

• Avoid high humidity during fruiting — it prefers a drier surface

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