Subalpine fir with balsam woolly adelgid damage. Hurricane Ridge, Olympic National Park, Washington.

Photo by: Justin Hof
Date: July 20, 2017

For more about the balsam woolly adelgid see: Ragenovich, I.R. and R.G. Mitchell. 2006. Balsam Woolly Adelgid. Forest Insect and Disease Leaflet 118. USDA Forest Service, available here: www.fs.usda.gov/Internet/FSE_DOCUMENTS/fsbdev2_043667.pdf

Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection: www.fs.usda.gov/main/r6/forest-grasslandhealth

plus-circle Add Review

comment

Reviews