Insect & Disease Resource Center
Search Results
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Bronze Birch Borer
The bronze birch borer (Agrilus anxius) is a destructive beetle that feeds on birch trees. Signs of this pest include off-color and sparse foliage in the upper canopy of the birch tree, dead branches in the upper crown and swollen ridges on the trunk and branches.
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Fungal Cankers on Trees
Cankers are caused by various species of fungi that infect wounded or stressed trees. The canker itself is the dead area on the bark that can be found on the trunk or branches.
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Cherry Bark Tortrix
The cherry bark tortrix (CBT) moths are major pests in the Pacific Northwest, where they affect rosaceous trees and shrubs. Affected plants include apple, crabapple, hawthorn, Mountain ash, pear and Photinia species. Prunus species are the preferred hosts.
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Chicken of the woods mushroom
Chicken of the woods is an edible mushroom with a texture and taste that is said to resemble chicken. The fruiting bodies tend to have many shelves, and can be found up a tree trunk or as a cluster at the base of a tree.
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Conifer Bark Beetle
Conifer bark beetles are beetles (of varying species) that tunnel just beneath the bark of conifer trees. Bark beetles account for over 90% of insect-related timber losses in the United States.
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Dogwood Anthracnose
Dogwoods are treasured landscape trees. A destructive disease known as anthracnose can tarnish their beauty, degrade their health, or even kill the tree.
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Emerald Ash Borer
Emerald ash borer (EAB) is an Asian beetle that threatens the existence of ash trees throughout North America. These insect pests have killed millions of ash trees in urban areas, woodlots, and nurseries, spreading via infested nursery stock and firewood. Regulatory quarantines rely on public cooperation and can be difficult to enforce. They can slow the spread of EAB, but cannot stop it.