Cucumber beetle, once he's started there's not a good way to stop them, but you can try a soapy water spray over the plant that may help. For the plants that haven't sprouted you can try a row cover.
It is a striped cucumber beetle or a three lined potato beetle. we can used row covers to deter them from eating our plants.
Awesome! Thanks Nicolette. :)
Thanks for finding this out for us Grace! Great work!
We could include in the garden soldier beetles because they are natural predators of the cucumber beetles.
Inspect newly planted cucurbit plants for the presence of this beetle; be watchful when plants are seedlings.
Cover seedlings with row covers, though you rmust remove during blossoming time several hours each day to allow pollination.
If you till your garden in the late fall, you will expose cucumber beetles hiding there to harsh winter conditions and reduce their populations next year. Tilling has the added benefit of making the soil easier to work in the spring.
Where cucumber beetles are a problem, let the beetles come out of hiding and plant late. They have a knack for finding vulnerable seedlings. When yours are up and growing, the cucumber beetles will be gone, fooled into thinking you don't have any cucumbers in your garden.
Few insecticides can be used on cucurbit plants because they are very sensitive. They would need to be used when plants are beginning to emerge through the soil. Please contact your local cooperative extension for a list of approved insecticides for your area.
Natural predactors include soldier beetles, braconid wasps, some nematodes, and soldier beetles.
Once bacterial disease has entered the plant, there's very little that you can do. If it's bacterial wilt, you'll see the leaves dry up and the plant will quickly wilt and die. Take prevention for next year as described above.