Tianma by Armillaria supply nutrients, Armillaria suitable for breeding in the damp soil, and soil moisture due to evaporation of water in the formation of fog around their enclosures.

• 天麻靠密环菌供给养料，密环菌适宜在潮湿的土壤中繁殖，而潮湿的土壤由于水的蒸发而在其周围形成雾罩。