Hello! Does anyone happen to have an idea what might be wrong with my hydrangea?
Wayne County Michigan trees and shrubs
It is likely a fungal disease of which there are a few that attack hydrangea. The most accurate way to determine the fungus is to have the diseased leaves directly examined. The MSU Plant and Pest Diagnostic Services is a resource for you and can be reached at 517-355-4536 or through their website at pestid.msu.edu
Below are two other resources to assist with growing healthy hydrangeas: