In summer, a generation can be completed every 26 to 34 days. In cooler weather, the life cycle is longer. Seven to 8 overlapping generations occur each year in Florida. It is probable that just as many occur in North Carolina greenhouses. If moths escape to the outside, several generations may occur in field tomatoes during summer.
Infestations usually result from shipped in or local greenhouse-grown transplants.
Therefore, close inspection of new plants can prevent serious problems later in the season. For recommended insecticides and rates, consult the current North Carolina Agricultural Chemicals Manual .