Knowledgebase

Lilac turning black #829136

Asked May 09, 2023, 10:35 AM EDT

I recently purchased and planted a common lilac. Some of the leaves are turning black. What is the problem? Should I dig it up and return it, or will it get better. How do I treat it. Pictures attached. Thank you.

Hennepin County Minnesota

Expert Response

The following web sites have information on what may your problem. The last one is for the Plant Disease clinic where you can send in diseased samples and get a diagnosis. There is a fee for that service. 
https://apps.extension.umn.edu/garden/diagnose/plant/deciduous/lilac/leavesbrownwilted.html
https://extension.umn.edu/yard-and-garden-news/lilac-issues-season
https://extension.oregonstate.edu/news/how-recognize-treat-avoid-lilac-bacterial-blight
https://pdc.umn.edu/

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