The amount of forest with problems is only a small fraction of the overall 22 million acres state officials looked at, but it ...

Surveyors mapped approximately 545,000 acres across Washington with some level of tree mortality, tree defoliation, or foliar ...

Annual cold snaps have kept some invasive tree pests in check, but outbreaks could become more common with warming ...

Parts of the North Cascades and Mount Baker are facing an outbreak of the western spruce budworm, aerial surveys reveal. The ...

Sitting in an old-growth spruce fir forest, Doug Smith says he can see firsthand the impact of reintroducing wolves on the larger ecosystem of Yellowstone National Park. Long before Yellowstone became ...

A popular mountain bursting with rhododendrons and endangered species in Mitchell County will soon reopen, nearly eight ...

Now, researchers at the University of Texas at Arlington are using artificial intelligence to take the guesswork out of pollen tracking, starting with tree pollen.

News Environment Trees killed by caterpillar outbreak helped to fuel Minnesota wildfires The eastern spruce budworm left dead — and highly combustible — balsam fir on the landscape ...

The spruce budworm is a native forest insect causing concern across Minnesota’s coniferous forests since at least 1954.

With trees tied to minivans, ere the Oregonians drove out of sight— Happy holidays to all, and to all a fun night! Nia Tariq can be reached at 541-812-6091. Follow her on Twitter @NiaTariq.

Deer don’t eat balsam fir but they feast upon white pine, white cedar, and other desirable trees. In northeast Minnesota, budworm outbreaks occur on a 30-to-60-year cycle.