Fir mortality caused by western spruce budworm, Douglas-fir bark beetle, and root diseases. Ochoco National Forest, Oregon.
Photo by: Unknown
Date: 1989
Credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection, Wenatchee Insect and Disease Service Center
Source: Jim Hadfield photographs; Wenatchee, Washington
Image provided by USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection:
www.fs.usda.gov/main/r6/forest-grasslandhealth
