Life table parameters of Spodoptera litura (Fabricius) was studied on castor, cabbage and cauliflower. Hatchability of eggs was recorded 100% on all host plants. Survivorship was 35 days on castor and 38 days on cabbage and cauliflower. Highest mortality occurred in the pupal stage (46.11, 43.87 and 38.72%) on castor, cabbage, and cauliflower, respectively. The net reproductive rate was found highest on castor 476.92 (females/female/generation) while on cauliflower 340.61. The highest intrinsic rate of increase was 0.2069 female/female/day on castor compared to 0.1836 on cauliflower. Finite rate of increase was 1.23, 1.21, 1.20 females/female/day for castor, cabbage, and cauliflower, respectively. Mean length of the generation was significantly higher on cauliflower (31.94 days) castor. The population of S. litura will become double in a short period (3.35 days) on castor compared to cabbage (3.71) and cauliflower (3.78), respectively. It can be inferred from the above parameters that castor is a suitable host for S. litura and it may also be used as trap crop to prevent the attack of economically important crops.