QuestionWhy does one half of the leaves on one side of my tree look like they are parched,brown and wilted while the other half looks perfectly healthy?
AnswerI would guess that the side with the damage is next to a building or a sidewalk or driveway and the heat from that side has caused the problem. Maybe a herbicide was sprayed on that side. A picture would help--one showing the position of the tree where it is planted. But it sounds like an environmental cause not any insect or disease.