oak blight

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Related to oak blight: oak wilt

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Noun

oak blight - a black plant louse that lives on oaks and dogwoods

plant louse, louse - any of several small insects especially aphids that feed by sucking the juices from plants

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Learn how to identify signs and symptoms of tree stress and diseases at Citizens for Conservation's "Are My Tree in Trouble or Not?" Speaker Tricia Bethke, forest pest outreach coordinator for the state of Illinois, will discuss how to identify, manage and report diseases such as bur oak blight, sudden oak death and anthracnose, as well as spotted lanternfly, Asian long-horned beetle and other tree pest threats.