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 Chlorosis Banner 1440X500
Leaf or Needle Discoloration
Chlorosis
Chlorosis is the result of a lack of chlorophyll production that may be caused by many conditions such as another disease, soil/water pH or nutritional imbalance, or tree wounds.
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Pest And Disease Tinder Fungus Banner 1440X500
Mold or Fungus
Tinder Fungus
Tinder fungus is a fungal species that produces large, porous fruiting bodies that often resemble a horse’s hoof. They vary in color, but are most commonly gray, black or brown. The body can be from 2-17 inches across, 1-10 inches wide and 1-10 inches tall.
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Woolly Hackberry Aphids J Douch
Substance on Leaf or Oozing
Woolly Hackberry Aphid
Woolly hackberry aphids (WHA), also called Asian woolly hackberry aphids, are an invasive species from China that are small and usually without wings. They look like fuzzy, white masses found on the underside of stems and leaves
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IMG 5584 Bark Beetles Under The Bark TW
Dieback or Thinning Canopy
Bark Beetle Management
Bark beetles are tiny insects that feed under the bark of trees and disrupt the vascular system. There are numerous species that are pests of landscape trees worldwide.
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Magnolia Scale Adults
Mold or Fungus
Magnolia Scale
Magnolia scale, This the largest of the soft scale. Adult female scales are relatively large, up to ½ inch and peach to gray in color, often with a fuzzy white covering. Feeding by the insect can stress trees, resulting in twig dieback and a decline in tree health.
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5369697 LGPT Japanese Maple Scale Horiz
Trunk or Bark Damage
Japanese Maple Scale
Japanese maple scale is an armored insect pest that uses piercing/sucking mouthparts to feed on plant juices.
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Pest And Disease Center Gray Snow Moldt Banner 1440X500
Mold or Fungus
Gray Snow Mold
Gray snow mold is a fungal disease that attacks turfgrass in areas where there are extended periods of snow cover. It is easier to manage if treated in a timely manner but can be fatal to turfgrass if left untreated.
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Pest And Disease Center Pine Sawfly Banner 1440X500
Leaf or Needle Discoloration
Pine Sawfly
Pine sawflies are conifer-feeding insects. They are categorized into two groups: spring species and summer species. Both feed on pine needles, causing the needles to turn yellow or brown. Sometimes the needles are completely consumed.
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