They are known to bore into fruit, often damaging tomato crops. Young larvae feed gregariously, often skeletonizing host plants. They also consume weeds, especially pigweed and pokeweed, and there are reports of armyworm infestations beginning with these weeds and subsequently spreading to adjacent crops. The caterpillars have been reported to feed on a broad range of plants, including important vegetable, fruit, field, and ornamental crops. The southern armyworm appears to be increasing in importance as a pest in some southern states, but it seems to have relatively minor impact in Arkansas.
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