While bark beetles have been slowly infesting trees in Aspen, winter won’t offer any respite. Aspen is currently home to the Douglas-fir beetle, the spruce beetle, the mountain pine beetle, Ips ...

As Colorado experiences its signature whiplash weather, arborists are warning that stressed trees are more vulnerable to pests and diseases. Peel back the bark, and you may find a predator in your ...

ISLAND PARK, Idaho – Oblivious to the dry summer heat, Forest Service silviculturist John Councilman hikes through a stand of trees looking for signs of violent struggle. It doesn’t take long.

Bark beetles are important for New Mexico’s forest ecosystems. They usually attack stressed trees, which are then replaced by younger, stronger trees. Defoliators are insects that eat tree needles or ...

JOINT BASE LEWIS-McCHORD, Wash. – Joint Base Lewis-McChord is full of beautiful forests. Often, the forests are filled with Douglas fir trees, but ponderosa pine is also present. Ponderosa pine is ...

Look at a tree damaged by a bark beetle, and the weaving tunnels might look like an alien language. For a tree already stressed by drought or other factors, it can spell doom. Dense forests are often ...

The Idaho Department of Lands (IDL) is encouraging landowners to get rid of downed trees in order to prevent bark beetle outbreaks in Idaho. Due to the winter storm in December 2025, there are many ...

CHELAN COUNTY, Wash — As climate change worsens, forest health is taking a hit in the form of insects, leading to increased wildfire danger. Glenn Kohler, forest entomologist for the Washington ...