Insecticide resistance in the diamondback moth (cabbage moth) has led to spray failure and crop ploughouts in most states of Australia. Results from this project reduce reliance on conventional insecticides by offering some alternative methods for managing pests in broccoli, cabbage, and cauliflower crops. Trial work included: a series of demonstration plantings at the Gatton Research Station, Queensland, testing of methods on commercial properties, and unsprayed plantings at the Gatton Research Station to investigate pests levels and activity of caterpillar parasites in the absence of insecticides.