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Tarnished Plant Bug

Tarnished Plant Bug Control

Lygus lineolaris

The Tarnished Plant Bug is a very damaging true bug. It can transmit plant diseases using their needle-like mouthparts to extract plant juices. This feeding causes terminal ends of plants to yellow and become distorted. Damaged buds become ragged and discolored.

Controlling weeds that provide overwintering sites for this pest is an important part of controlling them. These hosts include: Butterweed, fleabane, goldenrod, vetch, dock and dog fennel.

Adults become active in early spring and feed on newly developing buds and shoots. They feed on asparagus, broccoli, cabbage, celery, chard, coriander, corn, cowpea, cucumber, eggplant, endive, escarole, faba bean, fennel, horseradish, lettuce, mustard, onion, parsnip, parsley, pea, pepper, potato, radish, spinach, squash, sweet potato, turnip and watermelon. Greenhouse hosts include asters, chrysanthemums, dahlias, impatiens, and marigolds.

Sprays with Azadirachtin, Beauverria bassiana, Insecticidal Soaps, Horticultural Oils, or Pyrethrins are organically acceptable methods of control.

For control products and more information please see our True Bugs Control page.

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