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.

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Damage & Symptoms
Pest And Disease Center Peach Leaf Curl Banner 1440X500
Bumps or Blisters on Leaf or Needle
Peach Leaf Curl
Peach leaf curl is a disease that primarily targets peach trees just before or after bud break in the spring. Infected tree leaves will turn red, form blisters and wilt.
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Pest And Disease Center Powdery Red Imported Fire Ant Banner1440x500
Red Imported Fire Ant
The red imported fire ant is an invasive species that inhabits lawns, pastures, fields and roadsides to create lumpy soil mounds. They are known to sting people and animals which can be quite painful.
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Pest And Disease Twig Girdler And Twig Pruner Banner 1440X500
Dieback or Thinning Canopy
Twig Girdler & Twig Pruner
Twig girdlers and twig pruners are beetles that attack the twigs of trees. They lay eggs at the ends of branches and cut off the tips of the branch, allowing the larvae to feed on and pupate inside the twigs.
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Pest And Disease Center Zimmerman Pine Moth Banner 1440X500
Webs or Bags
Zimmerman Pine Moth
Zimmerman pine moths are 5/8” long with gray wings marked with mottled red and gray. Once a year, their larvae hatch and tunnel into trees, interfering with the tree’s sap flow and weakening them. Eventually, wind may break the weakened tops.
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Pest And Disease Center Buck Moth Banner 1440X500
Holes or Skeletonization in Leaves
Buck Moth
The buck moth caterpillar is a serious pest that defoliates oaks, particularly in the southeastern United States.
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Pest And Disease Bur Oak Blight Banner 1440X500
Spotting on Leaf
Bur Oak Blight
Bur Oak Blight (BOB) is caused by a fungus named Tubakia iowensis. It is a leaf disease that attacks oak trees causing severe decline and death.
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Pest And Disease Crape Myrtle Bark Scale Banner 1440X500
Dieback or Thinning Canopy
Crape Myrtle Bark Scale
Crape myrtle bark scale (CMBS) is an invasive insect species that attacks crape myrtle trees. They are small, white or gray in color and have a felt-like appearance.
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Pest And Disease Center Eriophyid Mites Banner 1440X500
Bumps or Blisters on Leaf or Needle
Eriophyid Mites
Eriophyid mites are the smallest arthropod pests on plants. Two common eriophyid mites are ash flower gall mite (Eriophyes fraxiniflora) and pine bud mite/needle sheath mite (Trisetacus pini).
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