Five Common Tree Diseases in North Texas

To keep your trees thriving throughout the summer months it is important to keep an eye out for common diseases. The more quickly you spot them, the better the disease can be managed.

Seiridium Canker

Seiridium Canker is caused by a fungus. The disease will cause dieback of the lower branches and then progress upward, affecting the upper canopy. In North Texas, the disease is commonly seen in the Italian Cypress.

Phytopthora Root Rot

Phytophthora root rot can affect many types of trees. In North Texas, it is commonly seen in Post oaks. The disease is caused by a fungus which thrives in poorly drained soil.

Entomosporium Leaf Spot

Entomosporium leaf spot commonly affects Photinias and Indian Hawthorns. It is caused by a fungus that thrives in extended wet conditions in the spring and fall.

Sooty Mold

Sooty mold is caused by the sugary substance excreted by insects. It is commonly seen on the branches of Crepe Myrtles. Its presence indicates an infestation of Crape Myrtle Bark Scale.


Mistletoe is caused by a semi-parasitic plant. As a parasite, it steals nutrients from the host tree. Mistletoe can cause stress to an already weak or sick tree, leaving it even more vulnerable to insects and other diseases.

What Can You Do?

If you think that your tree is suffering from one of above diseases, please contact us. One of our eight ISA Certified Arborists can work with you on a treatment plan that can be quickly put into action.

Live in Denton County, Texas? Contact Tree Shepherds. Our ISA Certified Arborists can help you with all of your tree care needs.

Krista White

Krista White

Krista is a member of the marketing and education team at Tree Shepherds. A lifelong learner, she loves writing about anything from Hemingway to Quercus macrocarpa.