Annual DNR Forest Health Highlights Report

This Washington Department of Natural Resources (DNR) News Release was originally published on March 31, 2022 and can be viewed here. Overview: Damage caused by extreme temperatures, increased detection of sooty bark disease of maple among key findings of DNR, USFS scientists. The DNR Forest Resilience Division released its annual Forest Health Highlights report following … Continue reading Annual DNR Forest Health Highlights Report

Meet the Spongy Moth (New Name, Same Destructive Insect)

"Spongy moth" has been formally adopted as the new common name for the invasive moth species Lymantria dispar by the Entomological Society of America (ESA). The ESA Governing Board voted unanimously to approve the addition of "spongy moth" to ESA's Common Names of Insects and Related Organisms List, completing a process started in July 2021 when the … Continue reading Meet the Spongy Moth (New Name, Same Destructive Insect)

Invasive Species Awareness Week: 2/28 – 3/4

This year, National Invasive Species Awareness Week is February 28 through March 4.  A multiagency news release will be sent out the week of February 22 highlighting the week and events to a statewide audience. The invasive emerald ash borer (right) and Asian long-horned beetle (left) are two pests that pose a great risk to … Continue reading Invasive Species Awareness Week: 2/28 – 3/4

Call for Content: Salish Magazine, Invasive species

Salish Magazine is seeking articles, poetry, and imagery for its Summer 2022 issue, which will be focused on invasive species. A number of our passionate Tree Link readers may be interested in submitting their own local invasive species stories. Some ideas that quickly come to mind include: promoting volunteer events aimed at control activities, success … Continue reading Call for Content: Salish Magazine, Invasive species

State Officials Ask for Public’s Help in Tracking the Invasive Tree-of-Heaven

This article is republished as it was originally posted on September 29, 2021 on the WA Invasive Species Website here. Photograph courtesy of the Washington Noxious Weed Control Board OLYMPIA–State agencies are asking the public to report an invasive tree called tree-of-heaven throughout October to help prevent the introduction of a harmful insect, the spotted … Continue reading State Officials Ask for Public’s Help in Tracking the Invasive Tree-of-Heaven

State Officials Ask You to Check Your Trees for Invasive Insects

This article is re-published as it was originally displayed on the WA Invasive Species Council Website on July 29, 2021. OLYMPIA – Are invasive species hiding in your trees? State officials ask you to check trees, lights, outdoor equipment and standing water in your yard for harmful bugs as part of National Tree Check Month … Continue reading State Officials Ask You to Check Your Trees for Invasive Insects

Urban Forest Pest Highlight: Longhorned Beetles

Have you checked your trees for signs of invasive forest pests yet? It’s August Tree Check Month, one of the best times of the year to check for harmful critters. This month’s Urban Forest Pest Highlight features three invasive longhorned beetles whose adult activity peaks in summer months. The three beetles to be on the … Continue reading Urban Forest Pest Highlight: Longhorned Beetles

Urban Forest Pest Highlight: Emerald Ash Borer

Soon the height of summer will be upon us, or as we like to call it, August Tree Check Month—the time of year when we invite everyone to be on the lookout for potential forest threats and report anything that looks suspicious. Have you ever checked your trees for signs of invasive forest pests? Summer … Continue reading Urban Forest Pest Highlight: Emerald Ash Borer

Sooty Bark Disease Appears on Maples in Seattle

By Rachel Brooks, forest pathologist, Washington State Department of Natural Resources, rachel.brooks@dnr.wa.gov. This article is re-published as it was originally displayed in Forest Stewardship Notes. The trunk of a sycamore maple in Seattle displays typical dark discolorations caused by C. corticale. (Photo by Rachel Brooks, Washington State Department of Natural Resources) The fungus Cryptostroma corticale, native to the … Continue reading Sooty Bark Disease Appears on Maples in Seattle

Announcing the 2021 Urban and Community Forestry Seminar Series

This year, due to the ongoing pandemic, DNR's Urban and Community Forestry Program will continue to offer our seminar series virtually. In the past, we covered the same topic 8 times traveling throughout the state to present in each region. This year, given how accessible online presentations are, we are changing our seminar format up … Continue reading Announcing the 2021 Urban and Community Forestry Seminar Series

Pest Highlight: Mediterranean Oak Borer

A recent infestation of the Mediterranean Oak Borer has been discovered in suburbs near Sacramento. The Mediterranean oak borer (MOB), Xyleborus monographus, is an invasive ambrosia beetle that primarily attacks oak tree species. Mediterranean Oak Borer. Source: University of California Agriculture and Natural Resources What is it?The pest is found in a variety of climates … Continue reading Pest Highlight: Mediterranean Oak Borer