Moonglow Juniper Care – Best Guide

Moonglow Juniper Care - Best Guide
Moonglow Juniper Care - Best Guide

Moonlight juniper is also known as Rocky Mountain juniper. The second name for Moonglow juniper is Juniperus scopulorum ‘Moonglow’, which is its botanical name in reference to ‘Moonglow’.

Let’s see how to care for moonshine juniper. A dense, cone-shaped juniper with intense bluish-grey-green foliage. The color is so intense it almost glows – one of our favorites! Great as an accent plant or planted as a privacy screen or fence border. Holds good color even in winter with very, very little bronzing. It grows especially well in the Plains states and Rocky Mountain regions of the Midwest.

Factory Facts and Specifications Moonglow Juniper

Mature height: 12 – 15 feet

Mature Width: 3 – 5 feet

Growth rate: Moderate (average 4″ – 10″ per year)

Hardiness Zones: 4 – 8 (use the zone finder below if not sure about your zone)

Sun exposure: Full sun is preferred, but partial shade is tolerated.

Soil Preference: Average to slightly acidic and sandy – well drained. Override is recommended.

Foliage Color and Structure: Very beautiful silvery blue-green foliage throughout the year.

Facts about flowers, cones or berries: Nothing to say.

Diseases/Insects: Rust, canker and cedar apple rust have been found in this variety. Many J. scopulorum cultivars appear to have some problems handling the high heat, humidity and nighttime heat in the Southeast.

Moonlight Juniper Treatment

To care for moonshine junipers, provide well-drained soil, as they do not like to have their roots soaked in water. Water by hand until established. Make sure you get about 6 hours of direct sunlight per day and keep the temperature above -34°C (-30°F). Fertilize in early spring with a slow-release fertilizer.

How to Care for Moonglow Juniper

A narrow, tapered evergreen shrub with a soft texture, silver-blue, needle-like leaves and attractive blue berries that makes a great vertical accent in difficult landscaping situations, forming tall evergreen hedges


Mature plants can benefit from fertilization. Make a visual inventory of your landscape. Trees need to be fertilized every few years. Shrubs and other plants in the landscape can be fertilized annually. Soil testing can determine the nutrient levels present in the soil. If one or more nutrients are low, a specific, rather than general, fertilizer may be required. Nitrogen-rich, nitrogen-rich fertilizer that promotes green leaf growth. Excess nitrogen in the soil can lead to excessive vegetative growth of plants, which can impair flower bud development. It is best to avoid fertilizing late in the growing season. Application at this point may force the plant to grow lush and not have a chance to harden before the cold weather begins.


Plant moonshine juniper in full sun. Juniperus monglow scopulorum ‘Moonglow’ is rarely a place where it doesn’t grow happily.


Regular watering means the soil should be kept evenly moist and watered regularly depending on the conditions. Most plants prefer an inch of water per week during the growing season, but be careful not to overwater. For the first two years after the plant is installed, regular watering is important for its establishment. The first year is critical. Watering once a week, deep watering is better than frequent watering for a few minutes.


However, if your Juniperus scopulorum ‘Moonglow’ is not yet established, it will need to be watered.

Watering your young moonshine juniper once a week is ideal and it will encourage the growth of an extensive root system.

This is only necessary if your young tree has experienced a shower.

Water your unestablished moonshine juniper for the first two years.

After the first two years, your Juniperus scopulorum ‘Moonglow’ can be considered a mature tree.

This means you no longer need to water every week.

It feels good to be watered by Mother Nature and her rain.


Moonshine Juniper is hardy to -34.4 °C (-30 °F).

These are incredibly hardy and adaptable trees.

Juniperus scopolorum ‘Moonglow’ does not necessarily have a preferred temperature range.

Moonlight juniper is likely to thrive regardless of the region it is located in.

However, your moonshine juniper may require extra attention.

Only if the area where you are planting this tree is known to have a lot of rain and excessively cold temperatures.

This combination of water and very cold temperatures caused the trees to gain ice cover.

Juniperus scopulorum ‘Moonglow’ cannot tolerate these conditions for more than two days and therefore requires protection.

This can be done by simply overwriting your tree.

In otherwise dry conditions, these trees are hardy with temperatures as low as -30°F (-34.4°C).

How often do I water my bay juniper?

After planting moonshine juniper, water slowly and deeply. Most of the water you put on the plant in the first place will be lost from the plant until the soil is soaked. A general rule of thumb is to count to 5 per gallon of pot size. Check the plants daily for the first week and every other day thereafter. Water according to the counting method for the first few weeks. Gator Bag Jr. can be used to aid this process and also provide a good soak for the plant due to the slow release of water into the root zone of the plant. Drip lines can also be used for watering when planting long hedges.

What type of fertilizer is best for my juniper shrimp?

Upright junipers like Moonglow juniper grow best when lightly fertilized in the spring after frost with a balanced slow-release fertilizer such as Espoma Tree-tone or Holly-tone to provide the extra acidity the juniper crave. Fertilize moonshine juniper again in late summer to mid-autumn. Juniper can be used successfully with chemical fertilizers or organic matter. Since organic methods of applying fertilizer and/or compost around the roots can produce excellent results and also improve soil condition, this will be a good first line of defense. Organic soil conditioners can also be combined with small amounts of chemical fertilizers for maximum effect. If your moonshine juniper uses a chemical fertilizer, applying a balanced release fertilizer once a year may be the easiest solution. Do not fertilize moonshine juniper after August. Autumn is when the juniper is ready to go dormant. Fertilizing at this time can promote new growth that is too tender to survive the winter. In the South, one application in late May was about as correct as another in July. More northerly areas may only want to fertilize once in June or July with an immediate release fertilizer. The amount of fertilizer per plant depends on the size of the plant and its root system. (Use less juniper fertilizer in the container.)

Moonglow Juniper Care - Best Guide
Moonglow Juniper Care – Best Guide

How do I grow Moonshine Juniper BUB?

We recommend digging a hole twice the width of the root system when planting newly purchased moonshine juniper, but no deeper. The most common cause of plant death after transplantation is that the new plant is planted too deeply. For this reason, we do not recommend planting in holes deeper than the bottom line of potted plants. A good rule of thumb is that after backfilling the hole, you should still be able to see the soil where the plants are growing. Depending on the quality of your existing soil, you may need to add local compost or topsoil to the supplemental soil.

What kind of mulch do I use on moonshine juniper?

We strongly recommend that you mulch moonshine juniper with hardwood ground cover or cypress ground cover, depending on local availability. Any type of mulch will do, but cypress or hardwood mulch is higher quality and will provide better overall nutrition as it decomposes. Mulching helps prevent weeds from competing with your new investments in water and nutrients. 2 to 3 inches of mulch is sufficient, but remember to be careful not to cover any part of the plant stem with mulch. It’s best to leave an inch of space between the mulch and the stem or stem of the plant.

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