Dying, Off, Color Pine Needles Normal in Autumn, Colorado State Forest Service

FORT COLLINS, Colo. — Although thousands of evergreen trees in Colorado's high country, foothills and communities are beginning to display dying yellow or brown needles, most are simply going through a natural shedding process — and are not being damaged by bark beetles or any specific tree insect or disease.

Invasive Pest of Landscape Trees in Utah by Utah State University

Trees Archives - SJMA

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