2004. Stained inner bark of Port Orford cedar killed by root disease (Phytophthora lateralis).
Stained inner bark of Port Orford cedar killed by root disease (Phytophthora lateralis).
"Port-Orford-cedar root disease is best identified by the cinnamon-colored inner bark and cambium that abruptly joins creamy white, healthy inner bark in roots and lower boles. Just prior to tree death, the discolored zone may extend 2 to 5 feet aboveground. This symptom is most readily seen on trees that are wilted or yellow. In trees that have been dead for several months, all the inner bark tissues are brown, dry, and often full of galleries made by cedar bark beetles." For more, see: www.fs.usda.gov/detail/r6/forest-grasslandhealth/insects-...
Photo by: Richard Sniezko
Date: 2004
Credit: USDA Forest Service, Region 6, Umpqua National Forest, Dorena Genetic Resource Center.
Source: DRGC digital photo collection; courtesy Richard Sniezko, Cottage Grove, Oregon.
Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance breeding programs for five-needled pines and Port-Orford-cedar, a native plant development program, and the National Tree Climbing Program. For additional photos of the DGRC program, see: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme...
Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection: www.fs.usda.gov/main/r6/forest-grasslandhealth
2004. Stained inner bark of Port Orford cedar killed by root disease (Phytophthora lateralis).
Stained inner bark of Port Orford cedar killed by root disease (Phytophthora lateralis).
"Port-Orford-cedar root disease is best identified by the cinnamon-colored inner bark and cambium that abruptly joins creamy white, healthy inner bark in roots and lower boles. Just prior to tree death, the discolored zone may extend 2 to 5 feet aboveground. This symptom is most readily seen on trees that are wilted or yellow. In trees that have been dead for several months, all the inner bark tissues are brown, dry, and often full of galleries made by cedar bark beetles." For more, see: www.fs.usda.gov/detail/r6/forest-grasslandhealth/insects-...
Photo by: Richard Sniezko
Date: 2004
Credit: USDA Forest Service, Region 6, Umpqua National Forest, Dorena Genetic Resource Center.
Source: DRGC digital photo collection; courtesy Richard Sniezko, Cottage Grove, Oregon.
Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance breeding programs for five-needled pines and Port-Orford-cedar, a native plant development program, and the National Tree Climbing Program. For additional photos of the DGRC program, see: www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme...
Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection: www.fs.usda.gov/main/r6/forest-grasslandhealth