They have a short life cycle and reproduce prolifically, allowing populations to build and rapidly cause damage. DBM caterpillars are small, reaching just 0.5 inches prior to pupation. Diamondback Moth Caterpillarsĭiamondback moth ( Plutella xylostella) (DBM) caterpillars are the most numerous and problematic caterpillar in home gardens and commercial fields in South Carolina. Extension agents can provide identification assistance as needed. Before making treatment decisions, use the information in this fact sheet to help correctly identify pests found in the garden. Other pests that cause occasional damage include aphids, whiteflies, harlequin bugs, and flea beetles. Caterpillars, the immature larval stage of butterflies and moths, are the most significant pests of brassica crops (collards, kale, cabbage, broccoli, cauliflower, mustard, turnips, and others). Each year numerous insect pests damage crops in home gardens and commercial fruit and vegetable fields.
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