The germination process is considered the most crucial factor in a plant’s life cycle as it seriously affects the successful execution of afforestation and reforestation programs. The successful plantation programme on wastelands requires a basic knowledge of some key factors that influence seed germination. The seeds of most leguminous plants are not able to germinate properly, while the potentiality of a plant and its growth depends much on seed germination. In the recent observation, five plant species namely Acacia mangium Willd., Albizia procera (Roxb.) Benth, Bauhinia acuminata Linn., Millettia pinnata (L.) and Peltophorum pterocarpum (DC.) K.Heyne, were taken as plant materials to determine the rate of germination percentage. Plant seeds are sown in Petri dishes on Whatman no. 1 filter paper moistened with distilled water under room temperature. Under controlled conditions, seed germination percentage is very low except for B. acuminata. Pretreatment with phytohormones (250 μg ml-1 of IAA and GA) and nitrogenous substances (2.5 mM of potassium nitrate and Thiourea) results in some improvement in the germination percentage in all five tree legumes.