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Garbage from dry leaves in a housing complex is often piled up and fills up green spaces. To utilize the waste of dried leaves, an organic fertilizer can be made using this dried leaves. The objection of this research is to utilize organic waste by adding bio-activator, which is called effective microorganisms (EM4). The composition for independent variables is dried leaves with EM4 20mL/5 kg dried leaves. In this research, it was used the aerobic method and stacked on a wooden box with dimension of 6 m x 6 m. Under aerobic condition, the results showed that the best content levels of C, N, P, K were C = 51.76%, N = 3.96%, P = 19.79% and K = 0.49%. For the anaerobic condition showed levels of C = 73.44%, N = 3.49%, P = 10.38% and K = 0.57%. The organic fertilizer applied to the growth of many plants in the area of Keputih Dian Regency, Surabaya.