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Sudden Oak Death - Western (Pest Alert)Author(s): Susan Frankel
Source: NA-PR-06-01, Newtown Square, PA:U.S. Dept. of Agriculture, Forest Service, Northern Area State & Private Forestry
Publication Series: Program Aid
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DescriptionTens of thousands of tanoak (Lithocarpus densiflorus), coast live oak (Quercus agrifolia), California black oak (Quercus kelloggii), Shreve oak (Quercus parvula var. shrevei), and madrone (Arbutus menziesii) have been killed by a newly identified species, Phytophthora ramorum, which causes Sudden Oak Death. Sudden Oak Death was first reported in 1995 in central coastal California. The pathogen also infects rhododendrons (Rhododendron spp.), huckleberry (Vaccinium ovatum), bay laurel (Umbellularia californica), California buckeye (Aesculus californica), and other tree and shrub species, but usually causes only leaf spots and twig dieback on these hosts.
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CitationFrankel, Susan 2002. Sudden Oak Death - Western (Pest Alert). NA-PR-06-01. Newtown Square, PA:U.S. Dept. of Agriculture, Forest Service, Northern Area State & Private Forestry
KeywordsNA-PR-06-01, cankers, crown dieback, mortality, live oak, Quercus agrifolia, Phytophthora ramorum, Arbutus menziesii, sudden oak death, bay laurel, Vaccinium ovatum, sudden oak california
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