Increasing worldwide demand for renewable energy promotes large scale commercial plantations of potentialbiodiesel trees. Tree Borne Oilseeds (TBOs) are grown in India in order to satisfy the growing demand of biodiesel. One ofthe major problems for biodiesel producers is the disposal of the seed cake after expelling oil from seeds. The physicochemicalcharacteristics and nutrient composition of the de-oiled seed cakes indicate that it could be converted into valuable organicmanure. In this regard, an experiment was conducted at College of Forestry, Sirsi in order to know the impact of de-oiledseed cake of Undi (Calophyllum inophyllum L.) on the germination parameters of Whistling pine (Casuarina equisetifolia L.).A total of fifteen treatments consisting of various quantities of seed cake, farmyard manure (FYM) and their combinationwere used. Maximum germination percentage (47.33%), mean daily germination (0.63), peak value (0.82), germination rate(0.92) and germination value (0.52) were recorded in the potting medium containing combination of soil, sand, 200 g FYMand 37 g cake. Seedling vigor index (1546.08) and biomass (0.22 g fresh weight and 0.06 g dry weight) were also maximumin seeds germinated in same potting mixture. The results indicated that application of de-oiled seed cake and FYM hadprofound and significant impact on seed germination parameters.