I Live In Southern Arizona (Mcneal) Caliche Is Everywhere. One Issue I Have Is Where The Bark On Trees Turns Dark Grey/ Black And

Question

the leaves turn brown and the tree dies. Ash, California pepper, and now desert willow. Elm just lost leaves and appears to be dead. Everything I plant dies. Can you help me out? THANK YOU

Answer 1

You may have a condition such as Sooty Canker fungus that is spreading to all your plantings. I suggest visiting with an extension specialist in your area who is familiar with tree diseases common to your location.

https://www.gardeningknowhow.com/ornamental/trees/tgen/tree-disease-identification-sooty-canker-fungus.htm

https://www.gardeningknowhow.com/garden-how-to/info/what-is-extension-service.htm