PROBLEM TO BE SOLVED: To provide a slope greening method which implements protective function necessary for a slope N, simplifies maintenance of the slope N, and exhibits good landscapes of the same. SOLUTION: According to the method, plants P1 , P1 , etc., of short heights are raised on a slope tow area N1 which borders on a plot S, and plants P2 , P2 , etc., of long heights are raised on a slope N2 other than the slope toe area. Thus, the plants P1 , P1 , etc., on the slope toe area N1 do not fall to the plot S.