What is the best control for this?
Wright County Minnesota
Hello, and thanks for contacting AaE.
If you are having some specific concerns about your own grape vines it would be helpful for you to describe them in detail, and to send some good photos of the problem leaves, vines or fruits along so that we can
corroborate your concerns.
There are a number of university extension web sites that discuss this disease.
Here are some of some them:
Please get back to us if you have more specific questions.