Knowledgebase
Yellowing leaves on half my lilac #877001
Asked July 12, 2024, 2:20 PM EDT
Dakota County Minnesota
Expert Response
https://soiltest.cfans.umn.edu/ There is a fee for this service.
Inspect the stems close to the ground. Rabbit or other varmint damage?
Herbicides being used in the area and they are drifting onto one side of the plant?
Any of the lilac problems that are described on this web page which would require a closer inspection to determine.
https://apps.extension.umn.edu/garden/diagnose/plant/deciduous/lilac/index.html
Last resort, send a sample to the plant disease clinic.
https://pdc.umn.edu/ There is a fee for this service.