Why are my ash leaves dropping?
Chances are its either Emerald Ash Borer, or if brown on the tips, curling, etc, it’s probably ash leaf anthracnose. Again, for the anthracnose, it’s rarely sprayed for, won’t kill the tree, will stop in a week or 2. Emerald Ash Borer – well, that’s another story.
Why are my sycamore leaves distorted and dropping?
Want to guess? That’s it; sycamore anthracnose. See above question and answer!