Bark beetles can destroy spruce forests by converting the trees' defences into even more toxic substances, scientists ...

On the northwest corner of Manito Park, dozens of ponderosa pines appear to stand strong. Joggers and dog walkers weave ...

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 ...

Bark beetle damage has more than doubled for two consecutive years as warmer winters extend the insects' active season across ...

Spruce bark beetles don’t just tolerate their host tree’s chemical defenses—they actively reshape them into stronger ...

A new study from Stockholm University reveals that spruce bark beetles, already infamous for killing millions of trees in Sweden, are also changing the forest microclimate. Using a combination of ...

Learn more about the chemical arms race between a fungus, a tree, and a beetle.

Bark beetle-infested spruce trees begin to dry out already before any visible signs of tree mortality appear, a recent study from the University of Eastern Finland shows. Led by Dr Samuli Junttila, ...

Clockwise from top left: (1) Two lodgepole pines growing side-by-side with notably different bark textures, (2) a rough-barked limber pine that has been attacked by bark beetles, (3) a limber pine ...

FORT COLLINS, Colo. — The latest findings about the health of Colorado’s forests are a “mixed bag”, according to forestry experts. On Tuesday, the Colorado State Forest Service released its annual ...

Louisiana House lawmakers are convening an emergency panel to deal with widespread beetle attacks on pine trees across the state and the public safety concern posed by the problem. It’s not the ...