Tree Pest & Disease Information

Many insects and diseases can cause harm to trees. Normally, a tree is weakened by another factor, which reduces its ability to resist infection / infestation. By planting a diverse range of native or disease-resistant tree species, people can help to slow the spread of pest and disease problems in Edmond.

Avoiding Tree Stress

Avoiding unnecessary stress in trees is one of the best ways to reduce susceptibility to pests and diseases. View Tips for Growing Healthy Trees for more information.

Common Pests, Diseases, and Disorders

• anthracnose and leaf diseases
• bagworms and fall webworms
• Biscogniauxia (formerly Hypoxylon) canker
• cedar-apple rust
• chlorosis (abnormally yellow leaves)
• crape myrtle bark scale
• Diplodia tip blight
• Dothistroma needle blight
• Dutch elm disease
• Lecanium scale insects
• pine wilt
• powdery mildew

More Information

For information about diagnosing a tree health problem, view the International Society of Arboriculture's guide to Insect and Disease Problems. To request information about a specific local tree pest or disease problem, contact Urban Forestry at (405) 359-4759.