Moonglow Juniper
Juniperus scopulorum 'Moonglow'View more from Juniper Trees
Moonglow Juniper
Juniperus scopulorum 'Moonglow'
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Special Features
Botanical Name
Juniperus scopulorum 'Moonglow'
Outdoor Growing zone
3-7
Mature Height
10-15
Mature Width
4-6
Sun needs
Full Sun
Juniperus scopulorum is a remarkable pyramidal shaped tree better known as the Rocky Mountain Juniper. This slow growing evergreen maintains a slender width while growing to a moderate height. This useful combination makes it an ideal selection for locations in your landscape project that require a visual height element but may not have the width to accommodate a wider tree or shrub. The Moonglow variety of juniper is also an ideal choice for horticulturists interested in creating bonsai. The upward forming branches produce needle shaped foliage in a deep blue-green color with a delicate silvery tinge, and these maintain their color throughout the entire year. Its hardiness also means that it is suitable for locations that may experience drought conditions, adding to its versatility. If you are in need of a slender and beautiful evergreen plant that can adapt to nearly any design feature, the Rocky Mountain Juniper is the tree for you.
Trees have a spectacular, wild appearance that always makes people think of forests or mountainsides. For the gardener, however, they’re very versatile; they can have their own special place in your urban landscape and, sometimes, even in your own home. The Moonglow Rocky Mountain Juniper is one tree that can meet a variety of needs as well as adapt appropriately to numerous climate and soil conditions.
Not only does it make an attractive and beneficial environmental addition to your property, but this particular juniper is a popular choice for use in the art of bonsai. Bonsai is the creations of stunning miniatures of full-sized trees placed in decorative pots, and the results are often used in home décor. Horticulturists choose the Rocky Mountain Juniper because of its exceptional beauty that cannot be bested by other trees of similar shape and color.
Growing Moonglow Rocky Mountain Juniper Trees
The Rocky Mountain Juniper is native to North America and can be found throughout the country, as well as further north into Canada. As mentioned, it is regularly used in bonsai but also makes a perfect specimen for buffering noise around parking lots or from busy roads near your home. They are regularly used in the United States in the median strip between our highways. Its pyramidal shape is symmetric and uniform from the base of the truck all the way to the top. In home or commercial landscape use the juniper can reach a moderate height of about 15 feet with a six foot spread. If left to its own device to grow as it would in nature, it can top 30-40 feet with a ten to 15 foot spread.
Appearance
The blue-green needles form along the branches to create a full and dense display that lasts throughout the entire year. Unlike other needle-foliaged trees, the Rocky Mountain Juniper retains most of its needles, ensuring an unlittered base and surrounding area. The branches on the juniper form at the base and slope upwards as the tree matures, giving it a full and perky appearance. It is very similar in appearance to the Eastern Red Cedar and it may hybridize with it if there are examples grown close by. This is a non-flowering specimen that does not produce any cones or fruits. However, its thick foliage is a favorite refuge for many types of birds, as well as small animals like squirrels and chipmunks.
Hardiness
Since the Rocky Mountain Juniper is so adaptable and versatile, it is suitable for a wide range of USDA plant hardiness zones. It is suitable for zones 3 through 7, which includes the lower parts of Alaska and Minnesota, into the warmer locations of northern Georgia and Virginia. In colder locations that are subject to a lot of rain (which can result in ice) the juniper will need a little bit of extra attention. Ice covering that lasts more than a day or two can damage the plants fragile foliage.
Soil Conditions and Drought Tolerance
Junipers do well in soil that is loamy, acidic and alkaline based. It has a very high drought tolerance but it is still important to remember that the tree will need to be watered regularly. Droughts can cause the root system to dry out completely and result in the tree perishing. Soil should be able to drain adequately to prevent damage to the roots from over watering.
Sun Exposure
Rocky Mountain Junipers also love the sun so you will want to ensure that the location you choose to plant your trees can receive as much of the daytime sun as possible. Some shade is acceptable but too much can be detrimental to the health of your tree. Overall, the juniper is going to be quite happy in most locations if you are mindful of its minimal list of intolerances. The tree’s ability to adapt fairly well to its environment can also reduce the amount of time you will need to care for it.
Pests and Diseases
The Rocky Mountain Juniper may attract bagworm caterpillars and juniper webworms. Both insects can cause damage to branches and the foliage. However if you check your tree periodically you can remove affected branches and prevent a sever infestation. The juniper is also susceptible to twig blight, which may cause death to the tree twig tips. Pruning out the dead bits will encourage new replacement growth. There are also three types of tree rust that may affect the juniper; cedar-apple, hawthorn and quince rust. Pruning away the diseased branches in the spring will again prevent further damage.
Adding Moonglow Junipers to Your Property
The neat and tidy growth patterns of the Moonglow Rocky Mountain Juniper make it a perfect selection for you garden. You can rely on its adaptability to provide an easy to grow plant that has exceptional coloring throughout the year and which can serve many purposes in all landscape design possibilities. Whether you are using it as a bordering plant, or decide to venture into the art of creating bonsai, the Rocky Mountain Juniper will deliver optimal results time and time again. You may also want to consider planting other similar varieties, like the Skyrocket Juniper or the Blue Point Juniper.
What is the best time of year to plant a Moonglow Juniper?
The best time to plant a Moonglow Juniper is in the early spring or fall. This allows the tree to establish its root system before the extreme temperatures of summer or winter. However, due to its hardiness and adaptability, it can be planted at any time of the year, provided it is watered regularly and protected from extreme weather conditions.
How often should I water my Moonglow Juniper?
While the Moonglow Juniper is drought-tolerant, it still needs regular watering, especially during dry periods. Water it deeply once a week during the growing season, and less frequently during the winter. However, avoid overwatering as this can lead to root rot. The soil should be well-drained to prevent waterlogging.
Can I grow a Moonglow Juniper in a pot?
Yes, you can grow a Moonglow Juniper in a pot. In fact, it is a popular choice for bonsai due to its attractive shape and color. However, it is important to ensure the pot is large enough to accommodate the tree’s root system and growth rate. Regular pruning will also be necessary to maintain its size and shape.
How can I use Moonglow Juniper in my landscape design?
The Moonglow Juniper’s pyramidal shape, moderate height, and slender width make it a versatile addition to any landscape design. It can be used as a focal point, a privacy screen, or a windbreak. Its year-round color also provides visual interest during the winter months when other plants may be dormant.
What kind of wildlife does the Moonglow Juniper attract?
The thick, dense foliage of the Moonglow Juniper provides an ideal refuge for many types of birds, as well as small animals like squirrels and chipmunks. However, as it does not produce cones or fruits, it is not likely to attract wildlife that feeds on these types of food sources.
How do I protect my Moonglow Juniper from pests and diseases?
To protect your Moonglow Juniper from pests and diseases, regularly check the tree for signs of infestation or disease, such as damaged branches or discolored foliage. If you notice any affected branches, remove them to prevent the problem from spreading. You can also use organic or chemical pesticides to control pests, and fungicides to prevent or treat diseases.
Can I grow Moonglow Juniper in a shady area?
While the Moonglow Juniper prefers full sun, it can tolerate some shade. However, too much shade can be detrimental to its health, leading to sparse, leggy growth and a lack of vibrant color. For the best results, plant your Moonglow Juniper in a location where it will receive at least six hours of direct sunlight each day.
How fast does a Moonglow Juniper grow?
The Moonglow Juniper is a slow-growing tree, adding only a few inches to its height each year. However, with proper care and optimal growing conditions, it can reach a height of 15 feet with a six foot spread in a home or commercial landscape. Its slow growth rate makes it an ideal choice for locations where a fast-growing tree may become too large too quickly.
What type of soil is best for a Moonglow Juniper?
The Moonglow Juniper is adaptable to a wide range of soil conditions, including loamy, acidic, and alkaline soils. However, it prefers well-drained soil to prevent waterlogging and root rot. If your soil is heavy clay or sandy, you can improve its texture and drainage by adding organic matter, such as compost or well-rotted manure.
Can I prune my Moonglow Juniper?
Yes, you can prune your Moonglow Juniper. In fact, regular pruning is necessary if you are growing it as a bonsai or want to control its size and shape in your landscape. Pruning can also help prevent pests and diseases by improving air circulation and removing affected branches. However, avoid heavy pruning as this can stress the tree and reduce its vigor.
