The aim of the present work was to assess the response of selected peat (PE) physical properties, after applications of two different vermicomposts. Vermicompost from sawdust (SV) and from sugarcanes bagasse (SBV) were used at substation rates into a soil-less plant growth medium (60 % peat: 30 %vermiculite: 10 % perlite) instead of Peat, at rates of (0 %, 10 %, 20 %, 30 %, 40 %, 50 % and 60 % by volume). Result show that after substitution of PE with equivalent amounts of SV or SBV with increase of bulk densities caused a decrease of porosity, Air-fill porosity and container capacity. Evaluation of these parameters is critical since they are directly related to plant growth. In the present experiments substitute of SV or SVB instead of PE were also obtained optimum physical conditions for most substrate.