Insect & Disease Resource Center
Search Results
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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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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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Fire Blight
Fire Blight is a bacterial disease affecting apples, pears, and some other members of the family Rosaceae. It is a serious concern to apple and pear producers. Under the right conditions, it can destroy an entire orchard in a single growing season.
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Hemlock Woolly Adelgid
Hemlock woolly adelgid (HWA) is a serious pest that is related to aphids. Hemlock woolly adelgids injure hemlocks by sucking sap from needles and twigs.
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Lace Bugs
Lace bugs are sap-sucking pests that feed on deciduous and evergreen plants during the spring and summer, weakening their host plants. These pests thrive in full sun under dry conditions. Depending on the species, they are about 1/8-inch long and whitish with tan markings. Their most distinctive physical trait is, of course, lace-like front wings.
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Pitch Canker of Pine
Pitch canker of pine is a severe fungal disease that creates numerous problems for pine trees, including yellowing and browning needles, branch death and formation of cankers.
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Phytophthora Bleeding Canker
Phytophthora bleeding canker is a disease caused by multiple species of Phytophthora, which invade the bark and outer sapwood of trees.