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
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
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.
Juniperus scopulorum 'Moonglow'
The Moonglow Juniper is a beautiful evergreen which is native to North America. It makes the ArborAdvisor catalog for the following reasons:
Cold-hardy down to -50
Can handle a variety of soil types
This tree thrives nationally across the central United States including Colorado. It has dazzling blue foliage that, like the name suggests, reflects the moonlight in a silvery display. Unlike other trees which lose their leaves or drop cones, the Moonglow Juniper will look exactly the same all year long with cool, silvery needles on dense upward forming branches. This tree forms a dense growth habit which makes it frequently used as a privacy screen or windbreak. This tree does not shed any needles or produce any litter at all which make it virtually maintenance free (other than occasional watering, especially during the first few years.)
This tree will naturally grow to 10-15 feet tall and 4-6 feet wide, but can be pruned to remain smaller if so desired. Plant in full sun or partial sun.
Hardy to -50°F Maximum Elevation: 8,500 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
Juniperus scopulorum 'Skyrocket'
Completely maintenance free, the Skyrocket Juniper is a great tree for Colorado! This tree is ideal for areas where you need height, but you don't want to sacrifice ground space for a wide based tree. This tree is very fast growing at roughly 1 foot per year and will reach mature height in roughly 10 years. The Skyrocket Juniper is a dusty green-blue all year—no browning or fading.
This is THE Arbor Advisor recommended evergreen for narrow spaces as it is drought resistant, highly adaptable, pest free, fast growing, and beautiful. It also does not require pruning! Just plant it in full sun and watch it grow. This tree is best used in urban gardens, as a privacy screen, or in narrow spaces.
This tree will reach a mature height of 15 feet, and 3-4 feet wide.
Hardy to -30°F Maximum Elevation: 6,500 ft.
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
Wichita Blue Juniper
Juniperus scopulorum 'Wichita Blue'
The Wichita Blue Juniper is a medium-sized tree with silvery blue foliage that stands out all year long with no bronzing or fading—for a lifetime of nearly 70 years! A great accent tree or privacy screen, it's short enough not to interfere with power lines. Birds love the tree for its tiny silver blue berries that persist in the summer and winter. This tree grows relatively fast at 6-12 inches per year.
At 10 years old it will be roughly 15 feet tall and 4-6 feet wide and keeps growing to eventually reach 15-25 feet tall and 6-8 feet wide. If using as a screen, plant 4 to 6 feet apart and 6-8 feet from a fence or drive to avoid overgrowth. This tree can be pruned to meet a particular height or shape.
This tree is very drought tolerant, cold hearty, and adaptable to most soil types.
Hardy to -40°F Maximum Elevation: 8,500 Feet
Explore our curated collection of the best evergreen trees for Denver metro.