Tree is 15+ years old and top branches began dying 2 years ago.pruned but worried about this year if it continues
Peter Bowden Answered question March 15, 2021
It sounds like Dogwood anthracnose.
More info at theis link:
https://www.fs.usda.gov/naspf/sites/default/files/publications/na-gr-18_how_to_identify_and_control_dogwood_anthracnose.pdf
Peter Bowden Answered question March 15, 2021