Moonglow Juniper Tree

Moonglow Juniper is hardy in USDA zones 3 to 9 and performs best in full sun with sharply well-draining soil. Like most junipers, it resents wet feet and will thrive on lean, rocky, or sandy ground where other evergreens sulk. Avoid low spots that stay soggy.

Planting

1. Choose a site with at least six hours of direct sun daily. Full sun gives the densest growth and the brightest blue color; shade thins the foliage and dulls the tone.
2. Confirm the soil drains freely. If water pools after rain, plant on a slight mound or amend with coarse material to improve drainage.
3. Dig the hole twice as wide as the root ball but no deeper than the root ball is tall.
4. Set the plant so the root flare (where the trunk widens into the roots) sits right at or slightly above grade. Never bury the trunk.
5. Backfill with the native soil, firm gently to remove air pockets, and water in deeply to settle the roots.
6. Spread a 2 to 3 inch layer of mulch over the root zone, pulling it back a few inches from the trunk to keep the bark dry.
7. For a privacy row, space plants about 3 to 4 feet apart on center (roughly 60% of the 4 to 6 foot mature spread) so they knit into a continuous columnar screen without overcrowding.

Care & maintenance

• Water. Water deeply but infrequently through the first one to two growing seasons to establish deep roots. Once established it is notably drought tolerant. Give it a deep drink during dry spells in fall and into winter, since evergreens lose moisture year-round and can desiccate when the soil is dry and frozen.
• Feed. Junipers need little. A light application of slow-release evergreen or conifer fertilizer in early spring is plenty; avoid heavy feeding, which forces soft, floppy growth.
• Light. Full sun, always. The more sun it gets, the denser and bluer it stays.
• Prune. Shear or tip-prune only the green outer growth in late spring or early summer to tidy the shape. Never cut back into bare, leafless old wood — like most needled conifers, juniper will not regenerate new growth from brown interior wood, leaving permanent dead gaps.
• Spacing. For a hedge or screen, hold to roughly 3 to 4 feet on center; give single specimens room to reach their full 4 to 6 foot width.
• Pests & disease. Watch for bagworms, whose spindle-shaped cases can defoliate a plant if left unchecked — pick them off or treat early in the season. Spider mites may appear in hot, dry conditions; a strong spray of water helps. Good air circulation and dry foliage discourage juniper tip and twig blights.
• Winter care. Tall narrow junipers can splay under heavy wet snow. In snow country, gently brush snow off the branches or loosely tie the plant with soft twine to help it hold its upright form.

How far apart should I plant them for a privacy screen?

Space Moonglow Junipers about 3 to 4 feet apart, measured center to center. That is roughly 60% of their 4 to 6 foot mature width, which lets the plants grow together into a solid, columnar screen while still leaving each one enough room to stay healthy and dense.

How tall and wide will it get?

Expect a mature height of about 15 to 20 feet with a relatively narrow 4 to 6 foot spread. That tall, slim profile is what makes it so useful for screening tight spaces and adding height without the bulk of a wider conifer.

How fast does it grow?

Moonglow grows at a moderate rate — faster than slow dwarf conifers but not as rapid as a Leyland cypress. Given full sun, good drainage, and consistent water while young, it puts on steady, dependable growth and fills in a screen reliably over a few seasons.

Is it really blue all year?

Yes. The silvery blue-green foliage is evergreen and holds its color through all four seasons, including winter. Full sun keeps the blue at its brightest; in shade the color fades toward green and the growth becomes thinner.

Is it deer resistant?

Largely, yes. Junipers have aromatic, resinous foliage that deer typically find unpalatable and tend to avoid, making Moonglow a smart choice for landscapes with browsing pressure. No plant is completely deer-proof when food is scarce, but junipers rank among the more reliably resistant evergreens.

Why is my juniper turning brown?

A few common causes are worth checking:

• Drainage and water. Junipers hate wet feet — soggy soil causes root rot and browning. Conversely, severe drought or dry winter soil can cause winter burn.
• Bagworms or spider mites. Look closely for spindle-shaped bagworm cases or fine webbing and stippling from mites, both of which discolor foliage.
• Normal inner-needle drop. Older interior foliage naturally browns and sheds, especially in fall. If the outer growth is green and healthy, this is routine and nothing to worry about.