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Ornamentals and Turf |
A Vance County gardener reported a heavy infestation of harlequin bugs on spider plants (Cleome) this week. The colorful harlequin bug is typically a pest of vegetable crops such as cabbage. This pest has the ability to destroy the entire crop where it is not controlled. The harlequin bug injures the host plants by sucking the sap of the plants, causing the plants to wilt, brown and die.
Plants commonly attacked by the harlequin bug include such crucifers as horseradish, cabbage, cauliflower, collards, mustard, Brussels sprouts, turnip, kohlrabi and radish. In the absence of these favorite hosts, tomato, potato, eggplant, okra, bean, asparagus, beet, weeds, fruit trees and field crops may be eaten. Eggs of the harlequin bug resemble tiny white kegs standing on end in a double row. Approximately 12 are laid together, usually on the underside of the leaves of the host plant.
Hand-picking and destruction of the insect pests and egg masses may deter damage where low numbers of insects are found. Hand destruction of the adults in the fall and spring as they emerge from hibernation before they lay eggs is an effective control. Once the pests have built up their population, they can be killed by applying insecticides. Sevin or most garden insecticides will work.
Orange-striped oakworms are visibly active. Corn earworms are also active.
Employment and program opportunities are offered to all people regardless of race, color, national origin, sex, age or disability. North Carolina State University, North Carolina A&T State University, U.S. Department of Agriculture, and local governments cooperating.
Last modified on August 9, 2004 by Stephen J. Toth, Jr.
