Forest health

ODF's Forest Health Unit provides statewide assistance on public and private forestlands for pest diagnosis and management and provides aerial and ground monitoring of forest health conditions. Stay up to date on Oregon's forest health via the annual Forest Health Highlights report and/or subscribe to forest health email updates.

Roundup of Oregon EAB news

Starting in October 2023, the Oregon EAB Bulletin became the Oregon Tree Health Threats Bulletin to reflect the range of pests facing Oregon's natural and urban forest trees. The new bulletin will continue to carry the latest information about the emerald ash borer in Oregon, as well as stories about Mediterranean oak borer and other new pests.

Factsheets & information

Email the Forest Entomologist for more information.

Quick insect pest diagnosis (start here)

Insect pest diagnosis guide

Asian giant hornet

Bark beetles

Bark beetles part 1 video

Bark beetles part 2 video

Bark beetles part 3 video

Borers

Emerald ash borer

Maps

Pocket guides

Videos

Fact sheets

Posters

Spanish

Mediterranean oak borer

Defoliators

Checking spongy moth traps

Sap-feeding insects

Shoot, twig, cone, etc. insects

Forest pollinators

Control and management

Email the Forest Pathologist for more information.

Sudden oak death (SOD)

Help stop the spread of sudden oak death! Learn about this disease, its hosts, symptoms, eradication efforts, and what you can do to help.

Foliage diseases

White pine blister rust

Root diseases

Email the Invasive Species Specialist for more information.

Invasive species in Oregon forests fact sheet

Insects

Spotted lanternfly FAQ

Diseases

Noxious weeds

Firewood

Email the Forest Health Unit for more information.

Abiotic damage

Animal damage

Bear damage report

Tree declines

Why is my tree dying? (Western redcedar)

Maps & data

Maps	GIS Data
2018 SNC	2018 SNC Data
SNC was not flown in 2017
	2016 SNC Data
2015 SNC	2015 SNC Data
2014 SNC	2014 SNC Data
2013 SNC	2013 SNC Data
2012 SNC	2012 SNC Data
2011 SNC	2011 SNC Data
2010 SNC	2010 SNC Data
2009 SNC	2009 SNC Data
2008 SNC	2008 SNC Data
2007 SNC	2007 SNC Data
2006 SNC	2006 SNC Data
2005 SNC	2005 SNC Data
2004 SNC	2004 SNC Data
2003 SNC	2003 SNC Data
2002 SNC	2002 SNC Data
2001 SNC	2001 SNC Data
2000 SNC	2000 SNC Data
1999 SNC	1996-99 SNC Data
1998 SNC	1996-99 SNC Data
1997 SNC	1996-99 SNC Data
1996 SNC	1996-99 SNC Data

Additional resources

Identify your tree, Common Trees of the Pacific Northwest
Bionomics of your tree, Silvics of North America
Other pest factsheets, Forest Insect and Disease Leaflets
Guides to managing forest health:

OSU Pest management guides
Why are my trees dying webinar (Douglas-fir, true fir, western redcedar, alder, etc.)

Saving Oregon Ash video

For the past few years ODF's Forest Health team has been working with scientists from the USDA Forest Service on a first-of-its-kind effort to save as much of the gene pool of the Oregon ash tree from the expected ravages of the emerald ash borer. The borer is an invasive insect pest first seen in Oregon in summer 2022 that could nearly wipe out this tree as it has done to other ash species in the central and eastern U.S. Seed from throughout the Oregon range of our native ash species is being collected for long-term storage at two USDA Forest Service locations - Dorena Genetic Research Center in Cottage Grove and the National Seed Lab in Fort Collins, Colorado. Watch why this effort is so important to the future of Oregon wetlands and streamside woodlands.

Saving Oregon’s Tanoaks video