Posted by Patty on August 12, 19100 at 13:16:34:
I have a clump of three birch trees that are about 50' tall and they are casting too much shade on our pool, so we would like to top them or as it is called, (crown reduction.)
I live in zone 3/4. Can you tell me how much I can take off the top before I would be damaging the tree.