Maple Tree leaves turning yellow and falling off - Ask Extension
My beautiful mature maple trees are dropping their leaves. Leaves are blotchy and discolored. Never happened before this year. Cant identify exactl...
Knowledgebase
Maple Tree leaves turning yellow and falling off #479522
Asked August 20, 2018, 10:20 AM EDT
My beautiful mature maple trees are dropping their leaves. Leaves are blotchy and discolored. Never happened before this year. Cant identify exactly what is going on. Stress? HELP. Picture is many leaves from same tree.
Stearns County Minnesota
Expert Response
You may have several diseases present. It appears that you have tar spot and anthracnose and possibly leaf scorch. Read the descriptions below and compare the pictures to what you are seeing. You can also send a sample to the plant disease clinic for a more definitive diagnosis.
1. http://apps.extension.umn.edu/garden/diagnose/plant/deciduous/maple/leavesspots.html
2. https://extension.psu.edu/maple-diseases
3. https://pdc.umn.edu/
