NOVELTY - Method for cultivating Grifola frondosa involves (a) weighing sugar cane bagasse, soybean, mushroom, lime and gypsum, (b) adding water to crushed mushroom, soaking added mushroom, mixing soaked mushroom, sugar cane bagasse and soybean, stacking mixture, covering heap using grass, allowing natural fermentation, turning fermented material, cooling fermented material, inoculating G.frondosa and covering with loam, and (c) harvesting mushroom, and spraying mushroom soaked solution on culture substrate.    USE - The method is useful for cultivating G.frondosa (claimed).    ADVANTAGE - The method is environmentally-friendly.    DETAILED DESCRIPTION - Method for cultivating Grifola frondosa involves (a) weighing 80-84% sugar cane bagasse, 8-12% soybean, 3-4% mushroom, 3-4% lime and 1% gypsum, drying sugar cane bagasse and crushing dried sugar cane bagasse, and drying and crushing mushroom, (b) adding 20-30 times water to crushed mushroom, soaking mushroom at room temperature for 18-24 hours, mixing soaked mushroom, crushed sugar cane bagasse and soybean, stacking mixture to form trapezoidal heaps with 1-1.2 m height and 2-3 m width, where dry weight of each heap of culture material is controlled at 300-500 kg, after 4 weeks heap diameter is 10-15 cm and density is 1/3 m, covering heap using grass, allowing natural fermentation, performing fermentation for 24 hours, when temperature reaches 60 degrees C, turning fermented material once for every day and 3-4 times for 5-6 days, where lime and gypsum are added to fermented material during turning process, cooling fermented material when the fermentation material has 63-65% moisture content, inoculating G.frondosa on cooled substrate and covering 1-2 cm thick loam, and (c) harvesting mushroom, and spraying 0.005-0.01 g/ml mushroom soaked solution on culture substrate (3-5 kg/m2) for promoting regrowth of mushroom, where the solution prepared by adding 20 times water to mushroom, soaking mushroom at room temperature for 18-24 hours, filtering solution, removing residue and adding water to filtrate and concentrating filtrate to 0.05 g/ml.