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U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Invasive Forest Pathogens

Preventing or reducing undesirable impacts of invasive forest diseases are a difficult challenge facing all land managers. Invasive forest diseases such as Sudden Oak Death, Laurel Wilt, White Pine Blister Rust, Chestnut Blight, Dutch Elm Disease, and Butternut Canker, continue to have serious impact on landscapes across the U.S. through changes in the structure, composition, and successional pathways of native forest communities.

Forest Health Protection provides technical assistance on forest health-related matters, including invasive forest insects, pathogens, and invasive plants working closely with land managers and resource staff with the National Forest System, the Department of the Interior, Department of Defense, other federal agencies, Tribes, all 50 States, U.S. Territories, universities, private landowners and other countries.

We provide survey and monitoring information, as well as technical and financial assistance to prevent, suppress, and control outbreaks threatening forest resources. Through these efforts we seek to maintain, enhance, and restore healthy forest conditions and look for links between changing climate and pest conditions. Forest Health Protection provides specialized assistance to incorporate disturbance considerations in forest planning and management.

Invasive pathogen - SOD

Sudden Oak Death in China Camp State Park near San Rafael, CA. Photo provided by Bruce Moltzan, USDA Forest Service

Spotlights


Laurel Wilt

Photo by Ronald F. Billings, Texas Forest Service – Bugwood.org

Laurel Wilt

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Sudden Oak Death

Diffuse cankers caused by Phytophthora ramorum. Photo provided by Bruce Moltzan, USDA Forest Service.

Sudden Oak Death

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White Pine Blister Rust

Ribes infected with White Pine Blister Rust. Photo provided by Richard Sniezko et al., USDA Forest Service.

White Pine Blister Rust

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