Problem Identifier Unit Screen//v.w/ RR Template

Problem Identifier Unit Screen//v.w/ RR Template Squash Bug

Cucumbers, gourds, muskmelons, pumpkins, summer squash, watermelon, winter squash

Problem
Squash and pumpkin leaves wilt and may become black and crisp. Bright green to dark gray or brown flat-backed bugs, about ½ inch long, cluster on the plants.

Analysis
(Anasa tristis)

Both the young (nymphs) and adult squash bugs attack cucurbits, but they are most serious on squash and pumpkins. They injure and kill the plants by sucking the sap from the leaves and stems. The dark brown adults, which are sometimes incorrectly called stink bugs, emit a disagreeable odor when crushed. They lay brick red egg clusters on the leaves in the spring. Although there is only 1 generation each year, all stages are found throughout the summer.

Solution
Squash bugs are elusive and difficult to control. Treat the plants and the soil with an insecticide containing carbaryl or methoxychlor when the bugs first appear. Repeat the treatment every 7 days until the bugs are controlled.

Squash varieties resistant to squash bugs: Butternut, Royal Acorn, and Sweet Cheese.

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