Why are the leaves of my ash tree dropping so early?
Thank you for the question. Ash trees can suffer from a variety of problems. Without more information and good photos of the entire tree and close up on branches and leaves, we could only guess. Tree age, sun exposure, construction events in the tree vicinity, good descriptions of the leaves, branches, trunk all would be helpful.
The photos show leaves that appear to be remarkably healthy for an ash tree at this time of year. If the leaves are falling earlier than usual, we don't know why. Leaves that have been damaged by insects or disease often fall early but that doesn't seem to be the case with the leaves shown in the photos.