Sixth instar larvae burrow into soil to pupate. Moths emerge in two weeks. Entire life cycle takes 4-6 weeks. Three to four generations per year. Seldom require control, but large larvae are difficult to control with pesticides.
Early detection is important.
Carbamates, organophosphates, pyrethroids, or Bacillus thuringiensis are often recommended for control. Foliage Feeding Insects. A County Agent's Guide to Insects Important to Agriculture in Georgia. Univ. of GA, Col. Ag. Ctr., Jan. 20, 1999.