White powder on the leaves of this little oak
White powder on the leaves of this little oak
![the background blur](https://lemmy.world/pictrs/image/f8d3f174-6890-4d69-8170-aa2cea1fe526.jpeg?thumbnail=256&format=webp)
![](https://lemmy.world/pictrs/image/f8d3f174-6890-4d69-8170-aa2cea1fe526.jpeg?thumbnail=1024&format=webp)
Hello everyone, I'm glad to have discovered this community! Can someone help me identify this disease? They come back even if you scrape them off the leaves!
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