Christmas tree growers in Atlantic Canada are monitoring the spread of a disease and looking for ways to combat it.

Less water and moisture mean that fir trees become more vulnerable to attacks by pests that bore into their bark to lay eggs ...

A drone shot in the Wasatch Mountains near Farmington Canyon shows the balsam woolly adelgid's damaging effects on subalpine fir trees. An invasive insect is setting up shop within Utah's long ...

Fir trees in Oregon and Washington died in record-breaking numbers in 2022, according to as-yet unpublished research conducted by the U.S. Forest Service.

Evergreen trees and shrubs often (but not always) have needles and produce cones. These needled cone-bearing trees are called conifers. Example of conifer trees include pine, fir, spruce and cedar.

Oh Christmas Tree, Oh Nameless Christmas Tree . . . how much I love thy soft and fragrant needles. Paul Cappiello is the executive director at Yew Dell Botanical Gardens, 6220 Old Lagrange Road ...

This year, Rotman said tree prices went up around $1 per foot, so an 8-foot tree would be about $8 to $10 more expensive. His balsam trees go for about $12 a foot, starting at 4 feet.

Observers who are noticing dying conifer trees around the Roaring Fork River watershed can blame the Douglas-fir beetle. The valley has avoided many of the insect infestations that have decimated ...

Loveland’s tree streets include 22 streets named for trees in the Pine Family. The family includes 234 species worldwide and they separate into nine groups: cedars, Douglas-firs, firs, golden ...