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 ...

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 ...