Trees

Trees are plants growing over 15ft tall with woody stems that live for many years. Shrubs also have woody stems but grow less than 15ft tall; they are included in their respective flower color/shape pages.

Apricot
Prunus armeniaca

Aspen
Populus tremuloides

Black Locust
Robinia pseudo.

Bog Birch
Betula glandulosa

Boxelder Maple
Acer negundo

ColoradoBlue Spruce
Picea pungens

Cottonwood(2)
Populus spp.

Douglas Fir
Pseudotsuga menz.

Engelmann Spruce
Picea englemannii

Juniper(5)
Juniperus spp.

Limber Pine
Pinus flexilis

Lodgepole Pine
Pinus contorta

Mountain Alder
Alnus incana

Narrowleaf Hoptree
Ptelea trifoliata

Netleaf Hackberry
Celtis reticulata

New Mexico Olive
Forestiera pubescens

Northern Catalpa
Catalpa speciosa

Oak(3)
Quercus spp.

Piñon Pine
Pinus edulis

Ponderosa Pine
Pinus ponderosa

Rio Grande Cottonwood
Populus deltoides

Rocky Mountain Birch
Betula occidentalis

Rocky Mountain Maple
Acer glabrum

Russian Olive
Elaegnus angustifolia
 

Siberian Elm
Ulmus pumila

Siberian Peashrub
Caragana arbor.

Single Leaf Ash
Fraxinus anomola

Snowball Tree
Viburnum opulus

Subalpine Fir
Abies bifolia

Tamarisk
Tamariz pentandra

TatarianHoneysuckle
Lonicera tatarica

WesternChokecherry
Prunus virginiana

White Fir
Abies concolor

Wild Plum
Prunus americana

Willow(13)*
Salix spp.