How to Grow Skyrocket
Wikimedia Commons
Skyrocket
Juniperus scopulorum 'Skyrocket'
shrubSkyrocket is a narrow, columnar cultivar of Rocky Mountain juniper that grows as a tall, slender evergreen shrub. Known for its striking vertical form and blue-gray foliage, it adds architectural interest to landscapes without requiring much horizontal space. It is extremely hardy and drought-tolerant once established.
When should you plant Skyrocket 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.
Example Skyrocket timeline · Pittsburgh, PA (Zone 6b)
-
Plant Skyrocket
Around Apr 17Near Pittsburgh's average last spring frost.
-
Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
-
Harvest Skyrocket
Late summer into fallBefore the first fall frost (≈ Nov 8)
Sample dates for Pittsburgh, PA. Sign up to get exact Skyrocket dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-8, with excellent performance in arid and cold climates
Sign up free to see if Skyrocket grows in your zone — and get a personalized planting timeline.
Get my Skyrocket timeline →Growth Stages
Establishment (Year 1)
12 monthsYoung plant with thin, upright stems and fine blue-gray foliage. Develops root system and establishes vertical structure.
Water deeply and regularly to establish roots. Mulch lightly with gravel around base. Avoid heavy organic mulch. Stake if in windy location.
Early Growth (Years 2-3)
24 monthsPlant grows taller and gains density along the narrow columnar form. Foliage color deepens.
Reduce watering frequency as roots deepen. Allow soil to dry between waterings. Minimal pruning needed; remove any dead or crossing branches.
Mature Growth (Years 4+)
IndefiniteReaches mature height of 15-20 feet with consistent 2-3 feet width. Full color and architectural presence established.
Minimal maintenance required. Water only during extended drought. Light pruning to maintain shape if desired. No fertilizer needed.
Flowering/Fruiting
Spring to fallProduces small, inconspicuous flowers in spring; females develop blue, berry-like cones in fall.
No special care needed. Cones provide winter interest and food for wildlife.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
-
Spray with water to dislodge; use insecticidal soap if severe. Ensure good air circulation.
-
Hand-pick bags in fall/winter; apply Bt (Bacillus thuringiensis) in early spring if infestation occurs.
-
Prune affected branches; apply horticultural oil in early spring or late fall.
-
Ensure excellent drainage; avoid overwatering. Remove affected plants if severely infected.
Uses
Ornamental focal point
CraftSkyrocket's narrow, columnar form serves as a striking vertical accent in landscapes, screens, and formal gardens. It draws the eye upward and adds architectural structure to garden designs. [source]
Wildlife habitat and food source
WildlifeThe dense foliage provides shelter and nesting sites for birds. Blue-gray cones are eaten by cedar waxwings, robins, and juncos in fall and winter. [source]
Windbreak and privacy screen
HouseholdMultiple plants spaced appropriately create tall, narrow screens that block wind and provide privacy without occupying excessive horizontal space. Excellent for narrow spaces along property lines. [source]
Low-maintenance xeriscaping
HouseholdIdeal for drought-tolerant landscapes, water-wise gardens, and arid climates. Requires minimal irrigation, fertilizer, or pruning once established, making it economical for large properties. [source]
Aromatic foliage
CraftJuniper foliage has a pleasant, distinctive cedar-like aroma. Can be dried for wreaths, potpourri, or pressed arrangements, adding sensory appeal to craft projects. [source]
Harvest Tips
Not harvested. Foliage may be lightly pruned for arrangements or cleared of dead branches seasonally. Best appearance maintained by allowing natural growth without heavy pruning.
Fun Facts
- 🌱 Skyrocket can reach heights of 15-20 feet but maintains a remarkably narrow width of only 2-3 feet, making it one of the most columnar junipers available for small spaces.
- 🌱 The blue-gray color is actually a waxy coating (bloom) on the foliage; this coating provides UV protection and contributes to the plant's drought tolerance.
- 🌱 Rocky Mountain juniper is not a true cedar, despite the common nickname 'Rocky Mountain cedar'—the 'cedar' name comes from the aromatic wood, which was historically used for closet linings and pencils.
Join 30,000 gardeners planning their gardens with LizPlants.
Get your personalized Skyrocket planting timeline
Tell us your zip code and we'll calculate exactly when to start Skyrocket 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 Skyrocket timeline →