What is eating leaves on my oak - Ask Extension
I have a white swamp oak planted five years ago whose leaves are being eaten. This is the first year this has happened. The lacy pattern looks like...
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What is eating leaves on my oak #801024
Asked July 13, 2022, 11:37 PM EDT
I have a white swamp oak planted five years ago whose leaves are being eaten. This is the first year this has happened. The lacy pattern looks like Japanese beetles, but obviously, something else are finding these leaves delectable. How should I treat this problem. Thank youl
Dakota County Minnesota
Expert Response
I have a white swamp oak planted five years ago and has something chewing the leaves. This is the first year this has happened. The lacy pattern looks like Japanese beetles, but something else is finding these leaves delectable. How should I treat this problem? Thank you.
Hi,
I’m concerned about the leaves turning brown. You could send a sample to the Plant Disease Clinic for a definitive diagnosis: https://pdc.umn.edu/
You could also consider having a certified arborist come check your tree: https://extension.umn.edu/planting-and-growing-guides/how-hire-tree-care-professional
In the meantime, here is some information that might give you some clues: https://extension.psu.edu/oak-diseases
https://blog.davey.com/2019/09/why-are-my-oak-tree-leaves-turning-brown/ (Not an endorsement of the company).
You might check for insects/caterpillars on the leaves, but I can only guess without seeing them.
I’m concerned about the leaves turning brown. You could send a sample to the Plant Disease Clinic for a definitive diagnosis: https://pdc.umn.edu/
You could also consider having a certified arborist come check your tree: https://extension.umn.edu/planting-and-growing-guides/how-hire-tree-care-professional
In the meantime, here is some information that might give you some clues: https://extension.psu.edu/oak-diseases
https://blog.davey.com/2019/09/why-are-my-oak-tree-leaves-turning-brown/ (Not an endorsement of the company).
You might check for insects/caterpillars on the leaves, but I can only guess without seeing them.
