Tree Treatments for Common Sick Tree Symptoms

Symptoms, such as discolored leaves, dead branches, or early leaf drop, can prompt a call with Harris and Sons Tree Specialists for one of our certified arborists to come out and take a look. Sometimes the cause of concern is a minor problem that is easily explained and corrected. Other times, the problem is more complex, with several underlying causes and a remedy that requires treatments extending over several years. If you are experiencing any of these signs, please give us at (602)-863-9336.



Plant-damaging Oomycetes that can cause crown and root rot diseases in woody plant trees.

Slime Flux

Bacterial infection that causes to a dark exudate to drain from the branches or pruning cuts of trees.

Sooty Canker

Fungus that causes limbs to wilt. Presents itself by the black, charcoal-like Spores beneath the bark.


Sap oozes from wounds or cankers. This is typically a reaction to an infestation or other stress.


Yellowing of leaves. This is a sign that leaves aren’t getting enough nutrients to produce chlorophyll.


Leaf Blotch

Irregular dead or discolored areas appear on the leaves of a tree. Typically of fungous origin.


Dead tissue on ends or the margins of leaves are a sign of environmental stress (poor soil, irrigation, etc).


Fungus that causes brown postures on leaves (particularly on the underside of the leaf).


A parasitic plant that is most commonly found in Palo Verde. Can spread quickly and is often fatal for the tree.


Spider mites, aphids and various borers are all common. Usually insects accompany some other ailment. A healthy tree is less likely to become infested.