The investigations on the influence of seasons on the biomass of the earthworm, Eudhllus eugeniae (Kinberg) and vermicompost production were carried out at the Regional Research Station, Bijapur (Karnataka) during the years 1995-98. Among the different seasons, rainy season (July-September) was found to be most suitable for earthworm multiplication (14483.8 worms/bed of 10 x 1 x 0.3 m) and production of vermicompost (893 kg/bed) followed by winter season (November - January) whereas, summer season (March-May) was significantly inferior. The summer season had relatively more temperatures with less relative humidities compared to rainy and winter seasons.