The polyphagous nature of Heliothis virescens (F.) and Helicoverpa zea (Boddie) causes these insects to be pests of multiple agronomic crops. A better understanding of the temporal and spatial distribution of these species is important for population and resistance management options over large-scale farm units. During 2002-2005, moth traps baited with H. virescens and H. zea pheromone were placed at various crop interfaces in Desha and Drew counties in southeastern Arkansas. The crops included cotton expressing Bacillus thuringiensis (Bt) endotoxin and non-Bt cotton, Bt and non-Bt corn, early and late planted soybean, and grain sorghum. Moths were collected and counted on a weekly basis from June-September during each year. Immature stages of these insects were sampled in cotton fields adjacent to some pheromone trapping locations during each year. The number of moths caught at each trapping location and the percentage of the different crop types surrounding a location will be examined. An emphasis will be placed on the management of these insects on cotton.