Cucumber downy mildew July 13, 2022, Wayne County, OH. Photo by OSU diagnostics intern Vansh Khatri.
Quick on the heels of our report of cucumber downy mildew on Monday in Medina County, we have diagnosed the disease on cucumbers in the Fredericksburg area of Wayne County. With thunderstorms rolling across northern Ohio this afternoon, we expect the disease to spread to cucumbers and melons throughout this part of the state. See my post on July 11 for fungicide recommendations.
Reported cucurbit downy mildew, July 13, 2022. http://cdm.ipmpipe.org