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Trees turned to snags: 'Sudden Oak Death' fells California oaks in their prime

dried trees in a forest

This once-majestic coast live oak in Marin County, Calif., has succumbed to sudden oak death.

Credit: Matteo Garbelotto


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Hillside in Big Sur, Calif., with many trees dead as result of sudden oak death.

A hillside in Big Sur, Calif.,with many of its trees dead as a result of sudden oak death.

Credit: Wikimedia Commons


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Biker with Infected oaks and tanoaks at China Camp State Park, Calif. in the background

Thousands of oaks and tanoaks have been infected at the popular China Camp State Park, California.

Credit: Doug Schmidt


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California bay laurel leaves infected with sudden oak death

California bay laurel infected with sudden oak death; bay leaves help spread the disease.

Credit: Doug Schmidt


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Enlarged view of a spore produced by the pathogen

Spore produced by the pathogen, or disease-causing agent, of sudden oak death.

Credit: David Rizzo


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Two young women with smart phone and envelopes

Young citizen scientists locating and collecting leaves with symptoms of sudden oak death.

Credit: Doug Schmidt


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