Oyster mushrooms are wood-rotting fungi that thrive on dead/decaying wood (poplar, willow, etc.) in nature—but for cultivation, they rely on agricultural byproducts like straw, corn stalks, or cottonseed hulls for carbon (lignin, cellulose, sugars). Nitrogen comes from wheat bran, soybean flour, or urea, with critical carbon-to-nitrogen (C:N) ratios: 20:1 for mycelial growth and 30-40:1 for fruiting bodies.
Minerals (calcium, phosphorus, potassium) boost growth—add calcium carbonate (1%) to balance pH and calcium levels, plus small doses of superphosphate or magnesium sulfate if needed. Trace elements and vitamins? They’re already in typical substrates, so no extra additions required!
Grow healthy oyster mushrooms easily by nailing these nutrient basics—save this for your next cultivation setup! 🍄
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