Insect & Disease
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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 Shothole Disease Banner 1440X500
Spotting on Leaf
Shot Hole Disease
Shot hole is a leaf disease that produces brown spots on plant foliage that eventually dry out, fall and leave multiple holes in the leaf.
Pest And Disease Sod Webworm Banner 1440X5800
Webs or Bags
Sod Webworms
Sod webworms are grayish-green caterpillars with dark brown heads and brown spots along the length of their bodies. The caterpillars live in silken tunnels at the base of grass blades, feeding on the grass blades at night and hiding in their tunnels during the day.
Fusiform Rust Photo Arborist Advice Banner
Mold or Fungus
Southern Fusiform Rust
Southern fusiform rust is a fungal pathogen that causes trunk and/or branch swelling in pine hosts and rust on oak leaves.
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.
Pest And Disease Center Spotted Lanternfly Banner 1440X500
Substance on Leaf or Oozing
Spotted Lanternfly
The spotted lanternfly is an invasive insect species native to Asia. This insect’s eggs are laid in masses about 1” long and may look like patches of crusted mud. Hatched nymphs are black with white dots. Adults are about 1” long with gray forewings that have black spots.
Pest And Disease Spring Dead Spot In Bermudagrass Banner 1440X500
Brown, Spotted, or Patch Grass on Lawn
Spring Dead Spot In Bermudagrass
Spring Dead Spot (SDS) is a common turf disease that is caused by the fungi Ophiosphaerella herpotricha and O. korrae. The disease creates dead or dying brown patches of turf that vary in diameter depending on the severity of infection.
Pest And Disease Center Spruce Spider Mites Banner 1440X500
Leaf or Needle Discoloration
Spruce Spider Mites
Ranging in color from green to orange-red, spruce spider mites are conifer-loving pests that overwinter as orange eggs at the base of needles and twigs. After hatching and molting several times, the adults mate and lay eggs. There can be six to eight generations each season, depending on temperature
Pest And Disease Sudden Oak Death Banner 1440X500
Dieback or Thinning Canopy
Sudden Oak Death
Sudden Oak Death (SOD) is caused by a water mold called Phytophthora ramorum. The disease is common throughout California and Oregon.
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