Insect & Disease
Resource Center

Signs of pests and diseases will vary from tree to tree. Search our database of pests and diseases for symptoms, damages, life cycle, management, and control information.

Search All Articles
{{appliedFilter.terms}}
Filters
Damage & Symptoms
Pest And Disease Center Oleander Caterpillar Banner 1440X500
Holes or Skeletonization in Leaves
Oleander Caterpillar
The oleander caterpillar is a bright orange, black-spotted pest that feeds on and skeletonizes leaves of the oleander plant.
Pest And Disease Pitch Canker Of Pine Banner 1440X500
Substance on Leaf or Oozing
Pitch Canker Of Pine
Pitch canker of pine is a severe fungal disease that creates numerous problems for pine trees, including yellowing and browning needles, branch death and formation of cankers.
Pest And Disease Center Scale Insects Banner 1440X500
Leaf or Needle Discoloration
Scale Insects
Scales are sap-sucking insects common on backyard trees and ornamental shrubs. These pests are mostly immobile and appear similar to shell-like bumps rather than insects.
Pest And Disease Center Fire Blight Banner 1440X500
Wilted or Curled Leaves
Fire Blight
Fire Blight is a bacterial disease affecting apples, pears, and some other members of the family Rosaceae. It is a serious concern to apple and pear producers. Under the right conditions, it can destroy an entire orchard in a single growing season.
Pest And Disease Fusarium Blight Banner 1440X500
Brown, Spotted, or Patch Grass on Lawn
Fusarium Blight / Summer Patch
Fusarium blight or summer patch diseases are fungal diseases caused by weak pathogenic fungi that infect turf impacted by adverse environmental or cultural factors.
Pest And Disease Hen Of The Woods Banner 1440X500
Mold or Fungus
Hen Of The Woods Mushroom
The hen of the woods mushroom, or maitake mushroom, is a fungus that is commonly found at the base of oaks and other hardwoods. It is large, dark gray-brown in color, and grows in clusters of fan-shaped, wavy caps.
Pest And Disease Center Iron Chlorosis Banner 1440X500
Leaf or Needle Discoloration
Iron Chlorosis
Iron chlorosis is a yellowing of plant leaves often caused by iron deficiency that affects many desirable landscape plants in North America. The primary symptom of iron deficiency is interveinal chlorosis, the development of a yellow leaf with a network of dark green veins.
Pest And Disease White Pine Weevil 1440X500
Holes or Skeletonization in Leaves
California Oakworm
The California oakworm is a caterpillar species that feeds on oak trees throughout California. The larva is about 1-inch long with yellow/green bodies and black stripes down either side and a light orange/brown head. Adult moths are small with tan/gray wings.
{{post.firstCategory}}
{{post.headline}}
{{post.summary}}
No Results

No results were found matching that query.

DSC 8019
DSC 8019

Get In Touch With Us!

We pride ourselves at Davey Tree on providing prompt, professional and personalized service from certified arborists that live, work and engage in your community. Contact one of our Davey Tree specialists for your residential needs.

Let's Find What
You're Looking For!