The balsam woolly adelgid, a tiny nonnative flightless insect, is spreading across the American West killing subalpine fir in northern Utah's recreation-heavy mountain ranges and canyons. Rsearchers ...

SEATAC -- The dwarf subalpine fir was moved from a doomed garden with the care approaching a human organ transplant: Detailed plans were first drawn up, then teams of educated specialists toiled for a ...

Imagine yourself walking quietly through a high-elevation subalpine forest. You feel immersed in shady stillness while enveloped by a fresh scent of pine, spruce and fir. You gaze out at the trees ...

ALTA, Utah — During an educational event at Alta Ski Resort, a certified arborist took skiers on a field trip to learn about the importance of protecting Utah’s trees. Ian Peisner led the "Trees and ...

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-larch, ...

Forests around the world are undergoing rapid changes due to changing climate and increasing physiological stress, but forest response to climate at the ecosystem scale can be highly variable due to ...

A nonnative tree-killing insect is invading northern Utah, attacking subalpine fir and potentially triggering yet another die-off of the region’s long-stressed conifer forests. Introduced from central ...