Q:  I am curious to know if you think  my tree of heaven is diseased?  I had a tree guy come out and  he thought the tree was fine and healthy and this was natural.  It is starting to show leaves but I just don’t think it looks right.  Any feedback  would be appreciated. 

A:  The tissue that looks different is a canker which is like a big wart. Cankers like this are mostly cosmetic. Applying the Sick Tree Treatment is all I would recommend.