Leaf spot on Boston ivy vine

Asked September 7, 2019, 4:39 PM EDT


I get a type of leaf spot on my Boston ivy vine in the spring and it continues to get worse through the season. What can I use to control it and when should it be applied?
Thank You!

Washington County Minnesota leaf spot horticulture boston ivy

1 Response

Most likely this is Guignardia leaf spot, a common fungal disease of Virginia creeper and Boston ivy. This is usually a cosmetic disease and does not threaten your plant. Prevention involves careful sanitation and cultural practices - fall cleanup, don't water overhead or at night, and so on. Details may be found here:
https://hort.extension.wisc.edu/articles/guignardia-leaf-spot/