Harish Palaniappan's

Did you know! that there is a term for people who understand the problems of trees and diagnose them. Yes, quite interesting to use these medical terms like surgery, diagnosis, for trees. "Tree surgery" its called, the idea of operating on trees, fixing their problems.. and these guys are "Tree surgeons". They do the same, except that thes surgeons go to the patient and operate on him( or her... but, hmm whatever).

This science is Arborist.

Arborist

Ar-bor-ist [ahr-ber-ist], noun

"A specialist in the cultivation and care of trees and shrubs, including tree surgery, the diagnosis, treatment, and prevention of tree diseases, and the control of pests."

-- heard this for the first time.. so this post.

And there are professional arborists who have websites. visit here.