Overview
Colorado's trees sort themselves by elevation, from foothill ponderosa pine up through aspen and spruce-fir to timberline. A few needle, leaf, and bark clues place most of them.
This guide covers common and iconic Colorado trees — how to tell them apart by foliage, bark, and habit. Pair it with a photo of the needles or leaves and the app to confirm any tree you find.
Key Species to Know
Colorado Blue Spruce
Picea pungens
The Colorado state tree — a conifer with stiff, sharp, silvery-blue needles arranged all around the twig, and hanging papery cones. Native to mountain streamsides.
Quaking Aspen
Populus tremuloides
A slender tree with smooth white-green bark and round leaves that tremble in the slightest breeze, turning brilliant gold in fall. Grows in vast clonal groves.
Ponderosa Pine
Pinus ponderosa
A tall pine with long needles in bundles of two and three and orange, jigsaw-plated bark that smells of vanilla. Common in the foothills and montane zone.
Douglas-fir
Pseudotsuga menziesii
A conifer with soft, flat needles and cones bearing distinctive three-pronged bracts between the scales. Common on cooler, north-facing montane slopes.
Lodgepole Pine
Pinus contorta
A straight, slender pine with short needles in bundles of two, forming dense even-aged stands after fire. Named for its use as tepee and cabin poles.
Gambel Oak
Quercus gambelii
A shrubby oak with rounded-lobed leaves that forms dense thickets on foothill slopes, turning russet in fall. Often called "scrub oak" locally.
Seasonal Guide
- Fall: aspen groves turn the mountainsides gold in late September, the state's signature display.
- Winter: blue spruce and the pines carry the montane forest green under snow.
- Look for orange, vanilla-scented plated bark to pick out ponderosa pine in the foothills.
Safety Reminder
This is an identification guide only — it does not cover edibility or foraging. At altitude, pace yourself and carry water; observe trees without damaging bark or breaking limbs.
Identify it instantly
Found something and not sure what it is? Point your camera with Spotter and get a species identification in seconds — with detailed reference info and species notes.