Poplar/cottonwood tree, 90 feet tall. How much is take to remove without killing the tree?
How much can I top without killing the tree?
Macomb County Michigan
Information on tree topping:
Disappointing response. I could have looked this up on the internet myself.
I'm sorry you were not satisfied with the answer. Since "topping a tree" is not a recommended procedure, there is no university research based data that will supply you with the answer to your question.