Knowledgebase
Bur oak blight? #874258
Asked June 23, 2024, 8:21 AM EDT
Sherburne County Minnesota
Expert Response
Although we can't be sure by viewing the photo, that's probably what's affecting the trees. Bur oak blight symptoms are most prominent in late summer and fall.
Anthracnose can be unsightly, but healthy trees usually tolerate it and replace damaged leaves.
Learn more here:
https://extension.umn.edu/plant-diseases/anthracnose-trees-and-shrubs
http://www.minnesotaseasons.com/Fungi/Oak_Anthracnose.html