A close-up of a bark beetle near a bore hole on a tree trunk. Photo courtesy Getty Images. Welcome to our tree column, “Ask your local arborist.” Each month, arborists from the Davey Tree Expert ...

Bark beetles are dark flying insects about the size of a grain of rice that leave tiny holes in the bark and branches of trees. Their very small grubs feed voraciously on the inner bark of trees that ...

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 ...

Bark beetles evolved to feed on specific types of trees, leaving behind dried-out shells, as seen at Lake Granby in Granby, Colorado on May 31, 2025. (Amanda Pampuro/Courthouse News) UNCOMPAHGRE ...

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 ...

My friend Roni and I were discussing an upcoming heavy pruning on her pine trees, which are growing into power lines. She said she was planning on using a systemic insecticide containing imidacloprid ...

Though the focus of his expertise is firmly rooted underground, Victor Lucero spends many hours each year working for the New Mexico Forestry Division from the air. Every week from mid to late June ...

SPOKANE, Wash. — After the city removed nearly 200 pine trees from public parks and golf courses due to bark beetle infestations, Spokane homeowners need to know how to protect the pine trees in their ...