The study was conducted to estimate the biomass accumulation and allocation in the selected ten tropical tree species grown in the arboretum of the College of Forestry, Kera1a Agricultural University, Thrissur, during the period 2006 to 2008. The species selected for the study includes Adenanthera pavonina, Artocarpus heterophyllus, Bridelia retusa, Ceiba pentandra, Hydnocarpus wightiana, Hymenodictyon excelsum, Peltophorum pterocarpum, Pterocarpus santalinus, Quassia indica and Tectona grandis. The results show that species like Ceiba pentandra, Adenanthera pavonina have good potential of accumulating more biomass. Tectona grandis has showed good biomass accumulation potential. Lowest record of biomass observed for Pterocarpus santalinus. The present series of analysis specify the scope of selecting tree species with good biomass accumulation and gives an idea about its allocation within different parts of the tree. This information is useful for further multiplication and distribution of social forestry and agroforestry programmes