Cucurbit Downy Mildew in Haywood County, July 28, 2023
Cucumber downy mildew was confirmed on cucumber plants in a research plot in western NC. Water-soaked lesions on the leaves were observed with gray to black spores on the underside of the leaf. Very light yellow spots or lesions were observed on the upper sides of leaves. At this time, downy mildew has not been observed on any other types of cucurbits such as squash or melons in western NC.
Downy mildew symptoms on a cucumber leaf. Photo by By Inga Meadows, NC State Extension.
