Experts and BHG readers answer.
Arizona Ash trees
Thanks for writing. I'm sorry, but without being able to see your ash, I can't say for sure why you're losing branches.
The staff at your county extension office should be able to help more --- they're a great resource and will know if there are emerald ash borers in your area or other problems specific to your area.
---Justin, Senior Garden Editor, BHG.com "