About Blue Rug Juniper
Blue Rug Juniper (Juniperus horizontalis ‘Blue Rug’) is a low-growing evergreen groundcover valued for its dense spreading habit, silver-blue foliage, drought tolerance, and ability to cover slopes and open landscape areas without developing substantial height.
Rather than growing upright like many traditional shrubs, Blue Rug Juniper spreads horizontally across the ground, creating a dense mat of fine-textured evergreen foliage.
Its extremely low profile makes it particularly useful for slopes, retaining-wall edges, rock gardens, erosion-conscious landscapes, foundation beds, and other areas where customers want evergreen coverage without blocking views.
Outdoor Warehouse Supply stocks Blue Rug Juniper in 3-gallon containers year-round.
| Plant Details | Specifications |
|---|---|
| Common Name | Blue Rug Juniper |
| Other Common Name | Blue Rug Creeping Juniper |
| Botanical Name | Juniperus horizontalis ‘Blue Rug’ |
| Also Associated With | Juniperus horizontalis ‘Wiltonii’ |
| Plant Type | Low-growing evergreen groundcover shrub |
| Stocked Size | 3 Gallon |
| Availability | Stocked year-round |
| USDA Hardiness Zones | Generally Zones 3–9 |
| Typical Mature Height | Approximately 4–6 inches |
| Typical Mature Spread | Approximately 6–8 feet |
| Spacing | Commonly about 4–6 feet apart depending on desired coverage |
| Growth Habit | Creeping, trailing, dense, spreading |
| Sun Exposure | Full sun |
| Water Requirements | Moderate during establishment; drought tolerant once established |
| Soil Preference | Well-drained soil |
| Foliage | Silver-blue to blue-gray evergreen foliage |
| Winter Color | May develop bronze or purple tones |
| Common Uses | Groundcover, slopes, retaining walls, rock gardens, borders, and erosion-conscious landscapes |
NC State describes Blue Rug Juniper as a dense, trailing, creeping juniper with silver-blue evergreen foliage and a mature height of only about 4–6 inches.
Common Names Associated with Blue Rug Juniper
This plant is most commonly searched as:
- Blue Rug Juniper
- Blue Rug Creeping Juniper
- Creeping Juniper
- Blue Rug Groundcover Juniper
Its botanical identity is Juniperus horizontalis ‘Blue Rug’, and the closely associated cultivar name ‘Wiltonii’ is also widely used in horticulture.
For customer-facing naming, Blue Rug Juniper is the clearest and most recognizable choice.
Growth Habit & Mature Size
Blue Rug Juniper is one of the lowest-growing forms of creeping juniper.
Rather than developing substantial vertical height, its branches extend horizontally along the ground and gradually create a dense evergreen mat.
Typical mature dimensions are approximately:
- 4–6 inches tall
- 6–8 feet wide
Its broad spread relative to its height is one of the plant’s defining characteristics.
This makes it especially valuable where customers want ground coverage without adding another upright shrub layer to the landscape.
Plant Spacing & Common Planting Patterns
Because Blue Rug Juniper can eventually spread several feet, spacing should account for its mature width.
Approximately 4–6 feet between plants is a useful starting point for many groundcover installations.
Closer spacing can create faster coverage, while wider spacing allows individual plants more time to spread before meeting.
Common planting patterns include:
- Slopes and banks
- Retaining-wall edges
- Rock gardens
- Large groundcover areas
- Foundation beds
- Landscape borders
- Areas surrounding boulders
- Drought-conscious planting designs
Sun, Soil & Water Requirements
Blue Rug Juniper performs best in full sun.
Strong sunlight helps maintain dense growth and attractive blue foliage.
It adapts to a range of soil types as long as drainage is good. NC State notes that the plant tolerates rocky, sandy, and relatively poor soils and performs especially well in dry, sunny conditions.
Newly planted junipers require regular watering while establishing.
Once established, Blue Rug develops strong drought tolerance and generally performs better in well-drained soil than in areas that remain constantly wet.
Is Blue Rug Juniper Evergreen or Deciduous?
Blue Rug Juniper is a needled evergreen.
Its silver-blue foliage remains present throughout the year, although winter temperatures can cause the foliage to develop bronze, purple, or plum-colored tones.
This seasonal color change is normal and does not necessarily indicate plant decline.
Growth Rate & Ground Coverage
Blue Rug Juniper has a relatively slow to moderate growth rate depending on site conditions.
Although it remains extremely low, established branches can eventually spread several feet.
For customers covering larger slopes or open landscape areas, mature spread should be considered carefully when determining plant quantities.
Its growth habit makes it particularly useful where long-term ground coverage is more important than immediate vertical impact.
Blue Rug Juniper for Slopes & Erosion-Conscious Landscapes
One of the strongest uses for Blue Rug Juniper is landscaping sunny slopes and banks.
Its creeping branches spread across exposed soil, helping establish vegetation in locations where taller shrubs may be awkward or difficult to maintain.
NC State specifically identifies Blue Rug Juniper for slopes, banks, rock gardens, walkways, and retaining-wall areas.
It should not be treated as a substitute for engineered erosion-control systems where structural stabilization is required, but it can be a useful plant component in appropriately designed landscapes.
Blue Rug Juniper Around Retaining Walls & Boulders
The trailing growth habit of Blue Rug Juniper works particularly well around hardscape and natural stone.
Branches can visually soften:
- Retaining-wall edges
- Landscape boulders
- Large natural stone
- Raised planting beds
- Rock gardens
- Concrete borders
Because the plant remains low, it provides greenery and contrast without covering substantial portions of larger architectural features.
Pros & Cons of Blue Rug Juniper
| Pros | Cons |
|---|---|
| Extremely low-growing evergreen groundcover | Requires substantial horizontal space |
| Attractive silver-blue foliage | Poor drainage can cause decline |
| Drought tolerant once established | Performs poorly in excessive shade |
| Excellent for slopes and banks | Slow coverage if planted too far apart |
| Useful around retaining walls and boulders | Can experience spider mites and other juniper pests |
| Handles hot, dry locations well | Winter foliage may bronze or purple |
| Provides year-round landscape structure | Dense mature growth can collect debris |
Blue Rug Juniper in Dallas–Fort Worth Landscapes
Blue Rug Juniper can be particularly useful in Dallas–Fort Worth landscapes where customers need low-growing evergreen coverage for sunny, well-drained areas.
Its drought tolerance once established makes it suitable for rock gardens, slopes, large planting beds, and areas around natural stone.
North Texas drainage remains important. Heavy clay soils that hold excessive moisture can create problems for junipers, so planting locations should allow water to move away from the root zone.
Outdoor Warehouse Supply stocks 3-gallon Blue Rug Juniper year-round for residential and commercial landscape projects throughout Dallas–Fort Worth and North Texas.
Customers can contact our Plano or Lewisville sales staff for current quantities and larger project availability.
Industry Contractor & Wholesale Pricing
Outdoor Warehouse Supply offers industry contractor and wholesale pricing for qualifying landscape professionals, builders, property managers, and commercial customers.
Contractors can source Blue Rug Juniper alongside shrubs, trees, ornamental grasses, soils, mulch, decorative rock, boulders, and other landscape materials for projects throughout Dallas–Fort Worth.
Contact our Plano or Lewisville locations for current inventory and contractor pricing.
Frequently Asked Questions
What size Blue Rug Juniper does Outdoor Warehouse Supply carry?
Outdoor Warehouse Supply stocks Blue Rug Juniper in 3-gallon containers.
Does Outdoor Warehouse Supply stock Blue Rug Juniper year-round?
Yes. Outdoor Warehouse Supply stocks 3-gallon Blue Rug Juniper year-round.
Inventory levels may vary with demand, so customers purchasing larger quantities should contact our Plano or Lewisville sales staff.
How big does Blue Rug Juniper get?
Blue Rug Juniper commonly remains only about 4–6 inches tall while eventually spreading approximately 6–8 feet wide.
Why is Blue Rug Juniper called a groundcover juniper?
Its branches grow horizontally rather than forming a tall upright shrub.
Over time, the plant develops a dense mat that covers a broad area of ground.
How far apart should Blue Rug Junipers be planted?
Approximately 4–6 feet apart is a useful starting point for many installations.
Closer spacing can create faster coverage, while wider spacing allows each plant to spread more gradually.
Does Blue Rug Juniper need full sun?
Yes. Blue Rug Juniper performs best in full sun and well-drained soil.
Is Blue Rug Juniper drought tolerant?
Yes. Once established, Blue Rug Juniper has strong drought tolerance and performs well in dry, sunny locations.
Is Blue Rug Juniper evergreen?
Yes.
Its silver-blue foliage remains through the year, although winter temperatures can cause bronze or purple coloration.
Can Blue Rug Juniper grow on slopes?
Yes. Slopes and banks are among its most common landscape applications.
Its spreading growth makes it useful for covering open, sunny areas where low vegetation is desired.
Can Blue Rug Juniper grow in North Texas clay?
It can grow in clay soils if drainage is adequate.
Persistently wet or poorly drained areas should be avoided.
Does Blue Rug Juniper work around retaining walls?
Yes.
Its low trailing growth can soften retaining-wall edges and create evergreen coverage without developing substantial height.
Is Blue Rug Juniper deer resistant?
Blue Rug Juniper is generally considered deer resistant, although no landscape plant should be considered completely deer-proof. NC State lists deer resistance among its landscape attributes.
Does Blue Rug Juniper turn purple in winter?
It can.
Cold weather commonly causes the blue foliage to develop purple or bronze tones, which is a normal seasonal response.
