Cytospora Canker of Spruce - Spruce Tree Cytospora Canker Disease

Stephen Nameth
C. Wayne Ellett
Jim Chatfield

The most important disease of spruce in landscape plantings in Ohio is Cytospora canker. This disease is caused by a fungus and is frequently found on Norway spruce and Colorado blue spruce and its cultivars. White spruce is also susceptible and there are a few reports on Serbian spruce. In addition to the spruces, Cytospora canker is sometimes found associated with Douglas fir, hemlocks, larches, and balsam fir.

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Keith L. Smith, Associate Vice President for Ag. Adm. and Director, OSU Extension.

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