When host plants ofHeliothis zea(Boddie) andH. virescens(F.) were studied in a 2500-acre area near Brownsville, Texas in 1970,H. zeawas found primarily on grain sorghum during the spring and on cotton during June–August. Cotton was the primary cultivated host ofH. virescens, but in the spring and fall, it was also common on such uncultivated bosts asNicotiana repandaWilld.,Verbena neomexicana(Gray) Small, andRuellia runyoniiTharp&Barkley; in addition,H. virescenswas found onAubtilon trisulcatum(Jacq.) Urban in tbe fall.