Laboratory and screen house experiments were conducted to evaluate the effect of temperature, salinity, osmotic potential, light/dark periods, seeding depth and flooding on germination of Convolvulus arvensis and Lathyrus aphaca. Maximum germination of C. arvensis (41%) and L. aphaca (91%) was recorded at 20°C which decreased with any increase or decrease from optimum temperature. C. arvensis and L. aphaca had maximum germination with distilled water compared with salt solution. C. arvensis and L. aphaca germination was 20 and 55%, respectively, at 200 mM NaCl conc. Osmotic potential of -0.8 MPa reduced the germination of C. arvensis to zero, whereas 3% L. aphaca germinated at this stress. Light was not pre-requisite for the germination of these weed species. Optimum depth for the germination of C. arvensis and L. aphaca was 1.0 cm where corresponding germination was 40 and 79%, respectively. Reduction in germination and growth was recorded with increase and decrease from the optimum depth. L. aphaca was able to germinate and emerge from higher depths of 8.0 cm. Tolerance towards flooding was significant for both species as C. arvensis tolerated 20 days of flooding, whereas L. aphaca germinated (17%) after 40 days of flooding and 2% after 80 days of flooding. These factors can be exploited for their management.