Diamondback moth, Plutella xylostella (L.), imported cabbageworm, Pieris rapae (L.), and cabbage looper, Trichopulsia ni (Hübner) are three key pests of cole crops in North America. Little is known about the seasonal abundance of these pests and associated natural enemies in Alabama. The three pests were monitored throughout the 2004 growing season (spring and fall plantings) on cabbage and collards at two locations in Alabama. Plants were sampled weekly for eggs, larvae, and pupae of the three pests. Adults of P. xylostella and T. ni were monitored with pheromone traps, while adult P. rapae were monitored by visual counts. Immature stages of each pest species were collected and reared in the laboratory to document parasitism. Several species of parasitoids were recovered from the three pest species with a seasonal variation in parasitoid activity. Diadegma insulare was the most abundant parasitoid of P. xylostella while Pteromalus puparum (L.) was the dominant parasitoid species recovered P. rapae. A tachinid fly, Voria ruralis was the only parasitoid recovered from T. ni. As growers shift from traditional broadspectrum insecticides to reduced risk pesticides for control of vegetable pests, the importance of integrated pest management and conservation and enhancement of natural enemies is increasing.