Environmental Requirements for MushroomsParameterOptimal RangeCritical ImpactTemperature16–24°C (varies by species)Too hot → poor growth; too cold → slow growthHumidity80–95% RHLow humidity → drying; high → mold/bacteriaCO₂ Levels800–1,500 ppmHigh CO₂ → long stems, small capsAirflow0.1–0.3 m/sStagna