An insect called the western spruce budworm continues to be the most widespread forest pest in Colorado, but a bark beetle ...

Climate-induced warming is fueling the proliferation of insects keen on invading Colorado’s forests and leaving the trees ...

The annual forest health report, released by the Colorado State Forest Service (CSFS), assesses the condition of Colorado’s ...

The beetle enters the tree via little holes in ... the flatheaded borer contributed to the deaths of more than 250,000 Douglas fir trees in this area — more than the four previous decades ...

this management goal is threatened by increasing tree mortality — the result of building competition pressure between trees in dense forest stands and a rash of Douglas-fir bark beetle outbreaks.

An insect called the western spruce budworm continues to be the most widespread forest pest in Colorado, but a bark beetle with notable infestations in places such as the Grand Mesa is the ...