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 Pythium Blight Banner 1440X500
Brown, Spotted, or Patch Grass on Lawn
Pythium Blight
Pythium blight is a destructive lawn disease that causes small, light brown, matted spots on grass.
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Pest And Disease Rhizosphaera Needlecast Banner 1440X500
Leaf or Needle Discoloration
Rhizosphaera Needle Cast
Rhizosphaera is a fungal genus that affects cone-bearing shrubs and trees throughout the Northern hemisphere.
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Pest And Disease Center Gypsy Moth Banner 1440X500
Leaf or Needle Discoloration
Spongy Moth (Formerly Gypsy Moth)
Spongy moths are insects who can cause extreme defoliation to trees when in their caterpillar stage.
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Pest And Disease Southern Pine Beetle Banner 1440X500
Sawdust on Trunk
Southern Pine Beetle
Southern pine beetle (SPB) is a 1/8 inch to 1/4 inch wood-boring insect that infests pine trees, killing even large trees very quickly. It is one of the most destructive pests in the Southern and Southeastern United States.
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Pest And Disease Center Vascular Wilt Disease Banner 1440X500
Mold or Fungus
Vascular Wilt Diseases
Vascular wilt diseases are caused by different fungi that attack the vascular (water-conducting) system of trees. A tree responds by blocking its vascular system to contain the disease. In doing so, the water supply to the leaves is cut off.
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Ficus Gall Wasp C Mallory
Bumps or Blisters on Leaf or Needle
Ficus Gall Wasp
The ficus gall wasp is a small insect that feeds on the Indian laurel fig, causing deformed foliage and swelling.
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Ganoderma On Trunk1
Trunk or Bark Damage
Ganoderma Butt Rot Of Palms
This disease is caused by a fungus that attacks palms. Palm fronds wilt from the bottom turning from dark green to brown. Mushroom growths, called conks, are seen on the lower portion of the trunk.
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Pest And Disease Botryosphaeria Banner 1440X500
Dieback or Thinning Canopy
Botryosphaeria Canker & Dieback
Botryosphaeria canker is a fungal disease that infects many trees and woody shrubs, especially if they are already stressed or weakened. It causes cankers and dieback.
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