Q.White, Sticky Crystals on Eucalyptus Tree Leaves
I have a white, sticky crystal on the eucalyptus trees around my place. The leaves are starting to fall off more than I have ever noticed before. Is there a treatment for this problem? I am in the foothills of the San Joaquin Valley in California.
This sounds like a fungal infection. Contact your local extension office (found under gov't in the phone book) for more information on how to control this problem. You may also find this article helpful:
https://www.gardeningknowhow.com/ornamental/trees/eucalyptus/eucalyptus-tree-problems.htm