Any suggestions as to whats wrong with my tree?
I just noticed today (first picture) this weird discoloration and dark spot on my tree (ash tree?)... In the darker brown area of the discoloration it appears to be some goopy or sticky substances coming out that is dark brown, almost like a molasses consistency. I noticed this spot of the tree also may be giving off a foul odor. Its a fairly large tree that grows very fast. Typically the new leaves come out a deep green and appear healthy (picture 2). Then they start to discolor with light brown patches, and slowly start to go completely brown and the leaves will drop (picture 3). I thought, and another tree person thought, it was due to heat. Where the tree stresses and drops the leaves.
I do want to keep the tree if possible as it provides a lot of shade for the house.
Let me know if anyone has any thoughts? I have been thinking of getting someone out here to trim the tree back as it has gotten large.