If you had cucumbers or muskmelons that suddenly turned brown and died last year, you may have had a disease known as bacterial wilt. The cucumber beetle carries this disease.
We saw a lot of bacterial wilt in plants last year in Ford County. Once a plant is infected, there is no cure, so prevention is the key. Because cucumber beetles overwinter as adults, early control measures are essential.
There are two types of cucumber beetles: striped and spotted. The striped cucumber beetle is the most common. The quarter-inch-long beetles are conspicuously colored: black head and antennae, straw-yellow thorax, and yellowish wing covers with three distinct parallel and longitudinal black stripes.
Young plants can be protected with row covers, cones, or other types of mechanical barriers. Edges must be sealed to ensure that the beetles do not find a place to enter.
Plants will eventually outgrow these barriers, or they will need to be removed to allow insect pollination of the flowers. Apply insecticides before beetles are noticed in the planting. Continue to spray weekly throughout the season, especially if you had a problem last year.
Homeowners can use permethrin (Bonide Eight Vegetable, Fruit & Flower Concentrate and Hi Yield Lawn, Garden, Pet and Livestock Insect Control). Once plants have started flowering, spray in the evening after bees have returned to the hive.
For more information, contact the Ford County Extension Office. Have a great weekend!