PROBLEM TO BE SOLVED: To suitably use dehydrated cake as greening soil and perform greening of an area (for instance, slope) intended for greening using the greening soil. SOLUTION: The greening soil is produced by mixing with dehydrated cake the crushed product of plants and woods and a fermentation indirect material promoting fermentation of the crushed product of plants and woods, and aerobically fermenting the crushed product of plants and woods. The greening method comprises spraying the greening soil thus produced onto an area (for instance, slope) intended for greening. COPYRIGHT: (C)2006,JPO&NCIPI