PROBLEM TO BE SOLVED: To provide a greening base material which is prevented from germination inhibition and/or growth inhibition, effectively grows greening plants, and can form a vegetation community having resistance against natural disaster and/or fall of earth: and to provide a greening method using the greening base material. SOLUTION: The greening base material is produced by mixing seeds of greening plants together, spraying and/or blowing the mixed seeds over a surface to be greened. The greening base material contains base soil and the char of sewage sludge, and is adjusted to have 10-70 vol.% of the char of the sewage sludge and pH 5.5-7.5. The three-phase distribution of the soil preferably includes 30-50 vol.% of a solid phase, 30-70 vol.% of a liquid phase, and 10-40 vol.% of an air phase. COPYRIGHT: (C)2010,JPO&INPIT
