Studies on allelopathic effect of seven tree leaf extracts viz., Syzygium cumini, Acacia arabica, Tectotna grandis, Eucalyptus tereticornis, Tamarindus indica. Samanea saman and Azadirachta indica each at 5 and 10 per cent concentration on sunflower and soybean indicated that, germination of sunflower was increased by T. grandis, T. indica and S. saman each at 5 and 10 per cent concentration than control. Soybean germination was increased by A. arabica, T. grandis, S. saman and A. indica at both concentrations over cotrol. Similarly seedling length, vigour index and seedling dry matter were also influenced by tree leaf extracts at different concentrations.