We characterized, over a 5-year period, the temporal dynamics of plum curculio (PC) immigration into an unsprayed apple orchard as estimated by daily quantification of numbers of overwintered PCs captured by traps. Traps were of 2 different types, were baited with synthetic odors, and were deployed in close proximity to woods. We present our results in relation to the different phenophases of apple tree development, weather factors, sex ratio of PC adults as well as the sexual maturity stage and mating status of the females.