Seasonal Foliage Flagging
Please note: browning of older, interior foliage during the early fall is not an indicator of tree decline.
More information about this healthy, seasonal expression is available here.
Western Redcedar Dieback
Dieback Symptoms
Dead Top
Brown Canopy
Thinning Foliage
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Field Guides
Produced by: Alexis Evans (Community Scientist)
Dieback Data
Dieback Reports
Newsletters
- Portland Parks and Recreation, 2019. Urban Forest Health: western redcedar and drought, Urban Forestry, Tree Bark Number 1, August 2019.
- WSU Extension, 2018. Forester’s Notes – Western Redcedar, Washington State University, North Puget Sound Extension Forestry E-Newsletter, Volume 11, Number 2, July 2018.
News Articles
- O’Neill E. 2019. ‘Dead tree after dead tree.’ The case of Washington’s dying foliage, KUOW, September 17, 2019.
- Vikander T. 2019. Western red cedars are dying of drought in Vancouver and scientists say it’s one more portent of climate change, The Star, Vancouver, June 13, 2019.
- Brend Y. 2019. Western red cedars die off as extended dry spells continue, say experts CBC News, May 14, 2019.
- Wilson C. 2018. Summer drought deals ‘devastating loss’ to western red cedar, B.C.’s official tree, Times Colonist, September 12, 2018.
Blog Posts
- Fischer M. J. 2019. Western Redcedar East of the Cascades: A Species in Decline? Washington State Department of Natural Resources, Small Forest Landowner News, December 4, 2019.
- Rippey, C. 2018. Western redcedar die-off in Seattle Parks. Green Seattle Partnership, Restoration Resources, July 24, 2018.
- Pehling D. 2017. Sick looking Cedars? Washington State University, Gardening in Washington State Blog, October 16, 2017.
Did we miss any? Please contact us if you know additional reports or resources to add.
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