You Can Contribute to Western Redcedar Dieback Research

Joey Hulbert, Research Scientist, Washington State University – Puyallup Research and Extension Center,

We are seeing it in many places, and it is of deep concern to all of us: Western redcedars are dying.

A dead cedar tree is seen in a forest stand. (Photo by Joey Hulbert, WSU Extension)

Western redcedar is an iconic and important component of Northwest forests. It has many ecological, economic and cultural values. Often referred to as the “tree of life,” the western redcedar is unmatched in its number of indigenous and modern uses. In many ways, this species embodies the forestry and cultural legacies of in the Pacific Northwest. In this time of dieback, it is critical we investigate the locations and the reasons behind the increased levels of mortality being observed.

The Forest Health Watch program is a new initiative led by WSU to help keep forests healthy. The program aims to host research projects that Northwest residents can contribute to as Community Scientists. You can learn more about the program at

This pilot project of the Forest Health Watch program is focused on the dieback of Western redcedar. Unfortunately, many reports of dead and dying western redcedar trees occur throughout its range, on both the east and west sides of the Cascades. In the face of this disturbing trend, more research is needed to map the distribution, identify vulnerable areas, and determine the factors driving the dieback. Community science can help.

Community science is research conducted by the general public to assist scientists with large questions by gathering important information in a timely and systematic fashion. Everyone is welcome to participate and help advance this important knowledge. Interested individuals can register as community scientists in the Forest Health Watch program, but it is not required for participation.

The tops of the Western redcedars seen at center are typical of those seen in areas affected by dieback. (Photo by Joey Hulbert, WSU Extension)

Help research go faster – Northwest residents are encouraged to contribute by sharing observations of healthy and unhealthy western redcedar trees. Observations can be shared online through the Western Redcedar Dieback Map project on or by joining the project through the iNaturalist smartphone app. More information for contributing to the iNaturalist project are provided at

Although the first project of the Forest Health Watch program is focused on western redcedar, Northwest residents are invited to share concerns for other forest health issues or recommend future projects. The program is designed to host multiple research projects with plans to expand when more research priorities are identified and additional financial support is secured.

Visit the Forest Health Watch program website to learn more, sign up for the newsletter, share feedback or ask questions. Inquiries about the program or the western redcedar research can also be directed to Dr. Joey Hulbert at

A declining Western redcedar tree is seen in western Washington. (Photo by Joey Hulbert, WSU Extension)