🍄 Oyster Mushroom

Pleurotus ostreatus

medicinal_mushrooms fungus

☀️ Sun

Indirect light / dappled shade

💧 Water

High humidity (80–95%)

🗺️ Zones

4–10 (outdoor cultivation)

🪴 Soil Type

Hardwood logs, pasteurized straw, coffee grounds, or supplemented sawdust

🧪 Soil pH

N/A (grown on logs/straw/sawdust)

💧 Drainage

N/A (substrate should be moist but not waterlogged; high humidity)

📏 Spacing

Fruiting blocks/bags spaced 8–12 inches apart

📐 Height

Fruiting body 2–8 inches across

📅 Days to Maturity

14–30 days from inoculation on straw; 3–6 months on logs

🍴 Edible Parts

🍽️ Fruiting body (entire mushroom)

🤝 Companions (6)

🤝 Shiitake

Different substrate preferences, complementary cultivation

🤝 Wine Cap Mushroom

Wood chip / straw stratification in mushroom garden

🤝 Comfrey

Mulch plant around outdoor mushroom beds

🤝 Hosta

Shade and humidity provider

🤝 Ferns

Humidity maintenance

🤝 Cardboard

Substrate layer for mycelial expansion into soil

⚠️ Keep Apart (2)

⚠️ Cedar

Antifungal wood oils

⚠️ Black Walnut

Juglone toxicity

💊 Medicinal Uses

Contains lovastatin (natural statin for cholesterol reduction) and pleuran (beta-glucan with immunomodulating effects). Antioxidant, antimicrobial, and potential antitumor properties. Mycelium can break down petroleum hydrocarbons (mycoremediation). Rich in protein, B vitamins, potassium, and iron. One of the most studied medicinal mushrooms.

📜 History & Traditional Uses

First cultivated in Germany during WWI as a subsistence food. Commercial cultivation began in the 1960s. Used traditionally in Eastern Europe for food. Mycoremediation applications discovered in the 1980s — can degrade PAHs and petroleum products. Now cultivated worldwide on diverse agricultural waste substrates.

📝 Notes

Most forgiving mushroom for beginners. Grows on diverse substrates: straw, coffee grounds, cardboard, cotton waste, hardwood sawdust. Cold-shock triggers fruiting. Fast colonizer, often outcompetes contaminants. Pearl, blue, pink, and golden varieties available. Cook thoroughly for best flavor and digestibility. Spore load is heavy — harvest before caps flatten.