← Plant Guides

How to Grow Blue Arrow Juniper

Blue Arrow Juniper

Juniperus scopulorum 'Skyrocket'

shrub

Blue Arrow is a narrow, columnar evergreen shrub prized for its striking blue-gray foliage and distinctive pencil-thin silhouette. This compact conifer reaches 20-25 feet tall but only 2-3 feet wide, making it ideal for tight spaces, borders, and accent plantings. Its foliage remains vibrant year-round and requires minimal maintenance once established.

When should you plant Blue Arrow Juniper in your zone?

Get a personalized planting timeline — when to start seeds, transplant, and harvest — based on your USDA zone and local frost dates. Free to start.

Get my Blue Arrow Juniper timeline →

Example Blue Arrow Juniper timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Blue Arrow Juniper

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest Blue Arrow Juniper

    Late summer into fall

    Before the first fall frost (≈ Nov 8)

Sample dates for Pittsburgh, PA. Sign up to get exact Blue Arrow Juniper dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun, 6+ hours daily; performance declines in partial shade
💧
Water: Low water needs once established; drought tolerant. Water regularly during first growing season to establish deep roots. Reduce frequency significantly after year one. Avoid wet feet or waterlogged soil.
📏
Spacing: 24 inches
📅
Days to maturity:
🌱
Planting depth: Plant at same depth as root ball; do not bury trunk

Soil

Type: Well-draining sandy or gravelly soil; tolerates poor soil conditions
pH: 6.5-7.5
Amendments:
Coarse sand or gravel for drainage improvement Perlite or pumice if soil is heavy Avoid excessive organic matter or mulch

Growing Zones

Find your zone →

Thrives in zones 3-8, with excellent cold hardiness and drought tolerance

3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b

Sign up free to see if Blue Arrow Juniper grows in your zone — and get a personalized planting timeline.

Get my Blue Arrow Juniper timeline →

Growth Stages

1

Establishment

6-12 months

Young transplant with developing root system; blue-gray needles tightly columnar

Water deeply 2-3 times weekly for first 6 months. Mulch lightly around base (not touching trunk). Avoid fertilizing; junipers prefer lean soil.

2

Juvenile Growth

1-3 years

Plant grows taller and maintains tight columnar form; foliage deepens in color

Reduce watering as plant establishes. Maintain mulch 2-3 inches away from trunk. Minimal pruning needed; only remove dead branches.

3

Mature Growth

Ongoing

Plant reaches full height and width; dense, pencil-thin form with rich blue-gray color

Water only during extended drought (less than 1 inch monthly rain). No fertilizer needed. Prune only to shape or remove damaged growth.

4

Seasonal Foliage Changes

November-March

Winter foliage may develop purplish tones in cold climates; color returns to blue-gray in spring

This is normal winter dormancy coloring. No intervention needed. Protect from heavy wet snow if possible.

Companion Planting

Plan your garden →

Plant with:

Ornamental grasses (Feather Reed Grass, Blue Oat Grass) Coneflowers Black-eyed Susan Lavender Russian Sage Sedums Catmint Creeping Junipers Smoke Bush

Avoid planting near:

Water-loving plants (Hostas, Ferns, Astilbe) Lawn sprinkler systems (excess moisture) Areas with poor drainage or standing water Plants requiring frequent watering

Common Pests

  • Spray with strong water spray or neem oil in early morning. Increase humidity around plant. Rarely serious on established plants.

  • Hand-pick bags in winter. Spray with Bacillus thuringiensis (Bt) in late spring when caterpillars emerge.

  • Dormant oil spray in late winter. Insecticidal soap in growing season if infestation is heavy.

  • Prune out infected branch tips and destroy. Improve air circulation. Avoid overhead watering. Apply fungicide in spring if disease is persistent.

Uses

🏠

Ornamental Accent & Screening

Household

Blue Arrow's narrow columnar form makes it ideal for creating strong vertical lines in landscapes, framing entryways, or screening undesirable views without consuming much ground space. Its year-round blue-gray foliage provides consistent color and structure. [source]

🦋

Wildlife Habitat & Food

Wildlife

Junipers provide shelter and nesting habitat for birds throughout the year. The foliage offers protection for overwintering insects and small animals. [source]

🎨

Dried Arrangements & Décor

Craft

Pruned branches from Blue Arrow can be used in dried floral arrangements, wreaths, and holiday décor. The blue-gray color persists when dried. [source]

🏠

Drought-Tolerant Landscaping

Household

Blue Arrow is an excellent choice for xeriscaping and water-wise gardens, thriving on minimal supplemental water once established and requiring no irrigation in most climates. [source]

Harvest Tips

Blue Arrow is an ornamental plant, not harvested for food. Prune selectively in late winter or early spring to remove dead wood or shape if desired. Avoid heavy pruning as it may damage the narrow form. Some gardeners use trimmed branches in dried floral arrangements.

Fun Facts

  • 🌱 Blue Arrow is a cultivar of Rocky Mountain Juniper (Juniperus scopulorum) and was originally selected in Colorado for its exceptional cold hardiness and sculptural form.
  • 🌱 The 'Skyrocket' cultivar name perfectly describes its growth habit—it can grow 1-2 feet per year vertically while remaining pencil-thin, creating a dramatic skyward accent in the landscape.
  • 🌱 Juniper foliage contains aromatic oils that repel some insects naturally, and the wood has been used historically for incense and in cedar chests for moth protection.

Gardening Terms

New to gardening? Learn about terms used in this guide:

Full Sun Mulch Partial Shade Transplant
Shop Blue Arrow Juniper plants and related plants at Plant Addicts →

Join 30,000 gardeners planning their gardens with LizPlants.

Get your personalized Blue Arrow Juniper planting timeline

Tell us your zip code and we'll calculate exactly when to start Blue Arrow Juniper seeds, transplant seedlings, and harvest — based on your USDA zone and local frost dates. Includes calendar reminders and printable task lists. Free to start.

Get my Blue Arrow Juniper timeline →