I have a 10 yr old Golden Willow that the inner limbs break on a regular basis. It seems to only occur on all of the smaller (1" diameter and smaller).
The outside of the tree looks fine, no leaf or bug damage that I can discern. The tree is roughly 40 feet tall with a diameter of 20+ inches.
Is is okay to remove all of the dead wood without damaging the tree? Is so when and how much?