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

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.

The amount of forest with problems is only a small fraction of the overall 22 million acres state officials looked at, but it is slightly above the 10-year average ...

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

Fraser fir (Abies fraseri) is one of the most popular Christmas trees due to its attractive color and shape, fragrance, excellent needle retention, and slightly upturned branches capable of ...

Fir trees also have similar looking cones, primarily at the top, but tend to stand upright where spruce hangs downward. These cones do not drop and disintegrate attached to the tree twig.

Olympic National Park offers accommodations at five different lodges and resorts. Here's how you can match where you stay ...

Fifty years ago, 73,877 acres of the Mission Mountains area were designated as wilderness, defined as, “an area of ...

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

Aerial surveys find 545,000 acres of damaged trees in Washington, marking an increase from the previous year and underscoring ...