[Arid_gardener] Question from Home-Hort WWW page

[Sharon.Panozzo at bannerhealth.com]

Sharon Panozzo
85206
Sharon.Panozzo at bannerhealth.com

I have two acacias (30' tall) (Acacia saligna) that have been looked at by arborists that tell me "they are sick", but cannot tell me what is wrong or how to treat them.   The branches are dying one-two at a time from the top down.  The remaining branches "look" healthy, but in spite of trimming off dead branches, fertilization and good watering, they continue to die branch by branch.   Can you help me find out what is wrong and how to treat?  I LOVE these trees.