This beautiful, moderate to slow growing tree typically grows to 25-30 feet tall and 7-10 feet wide. It has densely branched pyramid shaped form of short, glossy, green needles. When young this tree has purple-blue cones (2-3" long) and mature to brown. At maturity its bark is ash gray. This variety of Bosnian Pine does well in the Colorado Front Range, and rarely has problems. It does great in landscaping and can be used as a visibility screen or windbreak if planted in a row of others Bosnian Pines.
Note: This tree is very similar to the 'Emerald Arrow' Bosnian Pine (also recommended by ArborAdvisor). The only differences are that this variety has pine cones and is a tiny bit larger in both height and width than the 'Emerald Arrow'.
Hardy to -30°F Maximum Elevation: 7,000 ft.
The Bur Oak makes an outstanding ornamental shade tree and is one of the most tolerant white oaks. It is sometimes spelled Burr Oak and is also called "Mossycup Oak".
Oak trees live a very long time—typically between 200-300 years. This beautiful tree is tolerant of most soil and water conditions and adapts well to urban settings. From Texas to Alaska, the Bur Oak adapts to its environment. Spring through summer the Bur Oak has distinctive shiny, deep green leaves. This tree is not know to be a brilliantly colored fall tree, but its leaves do turn an orange/brown before falling for the winter. Shortly after the arrival of the leaves in the spring, your oak will flower with yellow-green catkins. These small, elegant flowers are where the acorns will originate. The acorns of the Bur Oak are the largest of all North American oaks. They are very important to wildlife as a food source.
You can expect this tree to grow to between 50-60 feet tall and 40-50 feet wide at the canopy. This is a beautiful, rugged tree that will bring wildlife to your yard and last for many generations. The Bur Oak is a great choice.
Hardy to -50°F Maximum Elevation: 7,500 ft.
The Chinkapin Oak tree is also known as bray oak, chestnut oak, rock chestnut oak, yellow oak and rock oak.
The Chinkapin oak is a medium sized deciduous oak of the white oak group that typically grows 30-50’ tall with an open globular crown. This oak produces small oval acorns with scaly cups that extend to approximately 1/2 the acorn length. These acorns are valued food for a variety of wildlife.
Chinkapin Oak trees have narrow, shiny green leaves which provides light shade. Its fall color is variable, but it usually displays shades of yellow and brown.
It is one of the more alkaline tolerant oaks, and will adapt to many soil types. This is a slow growing tree which will look great for many years—it can be planted as a street tree or yard tree.
Hardy to -30°F Maximum Elevation: 6,500 ft.
Crataegus crus-galli var. inermis
The Cockspur Hawthorn, is a small, thornless tree which grows to be between 10-20 feet and a similar width. It has single white flowers which appear shortly after the dark green leaves unfold. The tree also has abundant red fruit and silver-gray bark. The fruits are a bright red and are produced in masses, which provide excellent color in late summer and early fall. The Thornless Cockspur Hawthorn is drought resistant and has low water needs but it does require well drained soils and full sun.
Rounded growth habit
Very disease resistant
No major insect problems
Resistance to rust diseases
Hardy to -40°F Maximum Elevation: 8,000 ft.
Cologreen Rocky Mountain Juniper
Juniperus scopulorum 'Cologreen'
The Cologreen Rocky Mountain Juniper, also known as the Colorado Green Juniper, is a dense and narrowly columnar evergreen shrub with soft textured silvery-gray needle-like foliage and abundant small blue berries. This is a great choice for narrow spaces, landscape accents, privacy screens, and difficult landscape situations. This tree has dark green foliage which remain dark green throughout the winter. Neither the flowers nor the fruit are ornamentally significant.
The Cologreen Juniper is a dense multi-stemmed evergreen shrub with a shapely oval form. This is a relatively low maintenance shrub, however, if pruning is wanted it should be done in late winter once the threat of extreme cold (or heat) has passed. This is an ArborAdvisor recommendation due to its adaptability, low maintenance, and cold and drought tolerance.
The Cologreen Juniper will grow to be about 15 feet tall at maturity, with a width of 6 feet. It tends to fill out right to the ground and therefore doesn't necessarily require facer plants in front, and is suitable for planting under power lines. It grows at a slow rate, and under ideal conditions can be expected to live for 60 years or more.
This shrub should only be grown in full sunlight. It is very adaptable to both dry and moist growing conditions, but will not tolerate any standing water. It is considered to be drought-tolerant, and thus makes an ideal choice for xeriscaping or the moisture-conserving landscape. It is not particular as to soil type or pH. It is somewhat tolerant of urban pollution. This is a native North American juniper species.
Hardy to -40°F Maximum Elevation: 7,500 Feet
The Coralburst Crabapple is a compact, slow growing tree which forms a symmetrically rounded crown. Ruby red buds open into semi-double, rose pink blossoms and are followed by reddish-orange fruit alongside deep green foliage.
This tree is very disease resistant to scab as well as fireblight, cedar-apple rust and mildew. It produces a light crop of small, bronze-red ornamental fruit which will attract birds and wildlife.
It is best used as an accent tree that will grow to be roughly 15′ tall with a spread of 15′. Requires full sun and moist to well-drained soil.
Hardy to -30°F Maximum Elevation: 7,000 ft.
Cornelian Cherry Dogwood
The Cornelian Cherry Dogwood tree, also called “Cornelian Cherry”, is a hardy, small ornamental tree. They are highly adaptable due to their size and the fact that they can be planted in full sun or partial sun. This tree remains beautiful in all seasons. In the spring yellow flowers appear before the leaves appear. In the summer this tree produces olive shaped red fruits which are edible. This fruit can be eaten fresh, used in pies, preserves, and syrups. Depending on the year, this tree can turn a reddish-purple in the fall but almost always a red and yellow fall foliage. This is a self-pollinating tree meaning you only have to plant one to get fruit, however, it does much better with another variety of pollinator somewhere nearby.
This tree can be used in a lot of situations including in partly shady areas such as under or nearby large trees, overhangs, or side-yards. Scaly bark that curls back and can be displayed by removing lower branches to make a tree form. If left alone, this tree will grow into a bushy shrub, which acts as a privacy screen or hedge if that is the intention.
This tree does very well in the Colorado Front Range and should be planted in areas that have good drainage. It should be watered occasionally especially the first couple years, and then ongoing on a periodic basis during the summer months. Overall a low maintenance tree which grows to be around 12-15 feet tall on average in Colorado.
Hardy to -30°F Maximum Elevation: 5,500 ft.
Fat Albert Blue Colorado Spruce
Picea pungens 'Fat Albert'
The Fat Albert Blue Colorado Spruce is an evergreen conifer with rich blue needles on a densely branched, naturally pyramidal form. If you were going to describe this tree in human terms, you may use words like "heavyset" or "big boned". This tree is a very dense, upright, pyramidal conifer which can be a wonderful choice for use as a living Christmas tree. The Fat Albert is very slow growing, but it will become quite large over time at 30 feet tall by 25 feet wide.
This tree is best used as a yard tree or planted in a row and used as a privacy screen. Being a grafted (clone) tree it will show consistent shape and color when used in mass plantings. A great tree which does well in Colorado with very little maintenance. Plant in partial or full sun.
Hardy to -40°F Maximum Elevation: 9,000 ft.
The Gambel Oak is also referred to as a Scrub Oak, Oak Brush, or White Oak. This tree is an extremly hardy and adaptable tree native to the southwestern United States and can vary in size. The primary dwarf variety is most often used as a shrub or small tree in narrow areas or in Xeriscape landscaping. This oak has shiny dark green leaves which are about 5 inches long with three or four rounded leathery textured leaves on each side of the stem. The Gambel Oak produces small acorns which ripen in August or September. The leaves turn a brilliant red in fall. It can grow as a single tree with a rounded crown or form a dense thicket depending on the availability of water and if you buy it in stem or clump form. Plant in full sun to partial shade, moist to semi dry, well drained or slightly rocky soil. It has very little needs and is adaptable to harsh conditions.
At mature height this tree will get to be 8-15 feet tall and 6-12 feet wide, making it a great choice to plant under power lines or in narrow areas.
Hardy to -40F Max. Elevation 9,000 Feet
Gray Gleam Juniper
Juniperus scopulorum 'Gray Gleam'
The Gray Gleam Juniper is an upright, pyramid-shaped evergreen tree native to Colorado. This tree has silvery-gray needles with a dense branching habit. The Gray Gleam Juniper is a great choice for privacy screens or wind protection. This tree is extremely drought tolerant, low maintenance, and cold hearty. Pruning is not necessary but if you'd like to it is best done in the winter in between extreme cold and extreme hot weather swings to avoid burnout spots.
The Gray Gleam Juniper will grow to be about 15 feet tall at maturity, with a spread of 6 feet. This tree also works well as a specimen tree in lawns or with other groundcovers as an accent tree. Its height makes it a good choice for planting under power lines. It grows at a slow rate, and under ideal conditions can be expected to live for 70 years or more. Plant in a full sun or mostly sun area.
Hardy to -40°F Maximum Elevation: 8,500 Feet
Iseli Fastigate Narrow Blue Spruce
Picea pungens 'Iseli Fastigiate'
The Iseli Fastigate is a narrow, vertical form of the Colorado Blue Spruce. It is the perfect evergreen for narrow spaces or for privacy screens as it doesn't sacrifice ground space. This tree is a strong growing and adaptable tree which works great as a landscape tree for vertical accent, or where space is a consideration. This tree is also widely used as a wind screen and as a natural privacy screen. It does great in the winter and adds nice accent to any landscape.
The Iseli Fastigate typically grows to a width of 6-9 feet and height of roughly 25 feet. This tree has a beautiful blue color which persists all year long and adds great contrast to any landscape. This tree is cold hearty and more drought tolerant than other spruce varieties and prefers rich soil but will generally do fine anywhere around Colorado's front range in well draining full sun areas. The Iseli Fastigate should be watered occasionally for the first 2-3 years especially during the hot summer months.
This tree requires very little maintenance and no pruning–just plant it in a well draining area with full sun. Recommended to water occasionally during Colorado’s hot summer months, especially in the first couple years after planting.
Hardy to -40°F Maximum Elevation: 9,000 ft.
Just as most flowering trees are beginning to fade, the Japanese Lilac tree blooms with fragrant-smelling, showy flowers.
The Japanese Lilac is typically planted as a multi-stemmed shrubby tree but can be formed into a taller single trunked tree over time if so desired. It is famous for its fragrant, creamy-white panicles of flowers and long bloom time in the summer. Unlike many of its peers, the Japanese Lilac's flowers and leaves are on the tree at the same time. This gives a beautiful and exotic look to your garden. Its rigid branches form a small tree or large shrub. Deep green leaves turn a golden yellow in fall.
This tree can be used in commercial landscapes and streetscapes as it is a very hardy tree. For the best floral display, plant the Japanese Lilac where it will get plenty of sun. The Japanese Lilac has textured and striped, cherry tree-like bark that looks great even during the winter. It is a slow growing tree and needs moderate watering, especially when young. A great tree for planting under power lines.
Mature Height: 15-20 feet, Mature Width: 10-15 feet Hardy to -30°F Maximum Elevation: 7,000 Feet
Juniperus scopulorum 'Medora'
The Medora Juniper is a compact upright, pyramidal evergreen shrub with soft textured blue needle-like foliage. Native to the Badlands of North Dakota, this evergreen tree, nevertheless, thrives on the Colorado Front Range. It is a multi-stemmed evergreen shrub with narrow vertical growth, which makes it great for full sun narrow spaces or as a privacy screen. This tree has attractive and unique looking powder-blue foliage which remains showy all year long. The Medora Juniper produces small blue berries and flowers in early summer.
This tree is best use as an accent tree or as a privacy screen and should be planted in full sun. The Medora Juniper makes the ArborAdvisor favorites list because it has no significant negative characteristics; it is tolerant of both moist and dry growing conditions (just no standing water), and does well with urban pollution. However, this is a high maintenance shrub that will require annual pruning in order to get a nicely defined shape which is best done in late winter once the threat of extreme cold has passed.
The Medora Juniper will grow to be about 15 feet tall at maturity, with a spread of 6 feet. It tends to be a little leggy, with a typical clearance of 2 feet from the ground, and is suitable for planting under power lines. It grows at a slow rate, and under ideal conditions can be expected to live for 70 years or more.
Hardy to -40°F Maximum Elevation: 7,500 ft.
Pinus cembroides edulis
The Piñon Pine is a medium-sized pine tree native to Colorado. It has spreading upward branches which creates a broad, bushy, rounded evergreen with short green needles. This tree produces small reddish-brown cones with edible nuts. This tree is great for either accent planting or as a privacy screen. It tolerates poor soils, extreme cold, as well as harsh weather conditions. The Piñon Pine is a popular tree for smaller spaces because it tends to not out grow limited spaces. Its average size will be 20 feet tall by 15 feet wide. It can be planted in full sun or partial sun areas.
Cold hardy to -35°F Maximum Elevation: 7,500 Feet
The Russian Hawthorn is a relatively small deciduous tree growing to about 15 feet tall at maturity. This tree is primarily planted as an accent tree in yards and landscaping. It has a low canopy with a typical clearance of 2 feet from the ground, and is suitable for planting under power lines. It grows at a slow rate, and under ideal conditions can be expected to live for 50 years or more. In mid spring, the entire tree is covered in stunning clusters of white flowers. The flowers are followed by showy red berries that persist through late fall which attract birds. Throughout the season this tree has green foliage. Its oval leaves turn slightly yellow and red but are not as dramatically colored in the fall as other tree species.
Note: The fruit can be messy if planted directly alongside a driveway or sidewalk.
This tree should only occasionally need maintenance and upkeep, and is best pruned in late winter once the threat of extreme cold has passed. This tree should only be grown in full sunlight. The Russian Hawthorn is a highly adaptable tree to both dry and moist soil as long as there is no standing water. It does very well with urban pollution and can thrive in inner city environments.
Hardy to -30°F Maximum Elevation: 8,000 Feet
Tannenbaum Pine (Semi Dwarf)
Pinus mugho 'Tannenbaum'
The Tannenbaum Pine is the perfect sized evergreen for small yards. A tough-as-nails, dwarf pine tree, the Tannenbaum has an open shape in youth but consistently matures to a compact, pyramidal form. Its needles are dark green and medium in length and it produces cones at an early age.
The Tannenbaum Pine has rich green foliage (with a hint of gray/blue) that stays full during winter. This tree is highly adaptable to a wide range of environmental and climatic conditions and very hardy in cold weather. At maturity, expect this tree to reach 10-12 feet tall and 6-8 feet wide after 25 years.
Maximum Elevation: 8,500 Feet Cold Hardy to -40°F
Fagus sylvatica 'Roseomarginata'
The Tricolor Beech is a great shade tree with unusual foliage which thrives best in partially sunny and mostly sunny areas. Its early spring leaves are marbled with silvery-white and cream, changing to purple leaves edged in pink and white in the summer. Up close its leaves are purple with a border of blushing white and rose. This tree blazes with color for a stunning effect— it really stands out with its unique color. The Tricolor Beach becomes a large tree at around 30 feet tall at maturity, so it needs adequate room to grow. It can be a versatile tree but it's mostly ideal for lawns—possibly as a front yard statement tree or possibly as a backyard shade tree in a city environment.
This is a slow-growing tree so it can be used in landscapes, but be thoughtful when planting as it will become a large tree. Requires regular watering especially during the summer months. This is a cold-hardy tree ready to stand up to Colorado winters. It should be planted in well drained areas.
Hardy to -30°F Maximum Elevation: 7,000 ft.
Explore our curated collection of the best evergreen trees for Denver metro.