Plant creeping juniper (Juniperus horizontalis) in full sun and soil that drains well. Choose a cultivar by its mature height, spread and foliage color, then plan spacing around that plant’s label. Water new plants during dry periods, keep weeds down as the cover fills in, and do not assume drought tolerance means no care.
Choose a site with sun and good drainage
Full sun and well-drained soil are the most dependable starting conditions. Virginia Cooperative Extension’s care guidance says, “Be sure to plant creeping junipers in the full sun with well-drained soil.” The profile, last reviewed in March 2024, notes that the plant can adapt to clay when drainage is adequate; shade and poorly drained soil can contribute to disease and poor health. Virginia Cooperative Extension and North Carolina State Extension also describe tolerance of dry conditions, heat or moderately poor soils, but that is not a reason to plant in a persistently wet spot.
Pick a cultivar for the space you have
“Creeping juniper” covers many different forms. Virginia Cooperative Extension reports more than 60 cultivars in the trade, and their mature size and color can vary. Check the complete botanical name and mature dimensions on the nursery label rather than relying on a generic juniper tag.
| Cultivar | Reported form | Foliage |
|---|---|---|
| ‘Blue Rug’ (‘Wiltonii’) | Virginia Cooperative Extension describes it as low-growing; Oregon State University describes a very low, dense form about 4 inches tall with trailing branches. | Silver-blue; may turn lightly purple in winter. |
| ‘Prince of Wales’ | Oregon State University describes a form reaching about 8 inches tall. | Turns purplish in winter. |
| ‘Plumosa’ (also called Andorra juniper) | Virginia Cooperative Extension describes a flatter mound around 2 feet tall and at least 5 feet wide. | Purplish in winter. |
These are source-reported cultivar descriptions, not guarantees for every plant or site. Iowa State University Extension describes creeping juniper as a 6-to-15-inch full-sun ground cover and notes that foliage colors are available; use the named cultivar’s label when selecting for a particular height or look. Oregon State University · Iowa State University Extension
#1 Best Overall
- Vibrant Year-Round Color: Features stunning, dense silvery-blue foliage throughout the spring and summer that gracefully transitions to a rich, purplish-blue tint during the cold winter months.
- Low-Growing Ground Cover: Reaches a mature height of just 4 to 6 inches while spreading aggressively up to 6 to 8 feet wide, forming a thick, weed-suppressing carpet over your soil.
- Erosion Control & Slope Master: An excellent, deep-rooting choice for stabilizing steep banks, filling in rocky terraced landscapes, and preventing soil erosion in areas difficult to mow.
- Extremely Hardy & Resilient: Thrives in USDA Growing Zones 3 through 9, adapting beautifully to full sun, poor rocky soils, extreme heat, drought, and urban environments once established.
- ow-Maintenance Starter Plants: These ready-to-plant starter plugs save you time and money, establishing rapidly with high resistance to pests, deer, and common plant diseases.
Set spacing by mature spread and the coverage you want
Published spacing recommendations differ: North Carolina State Extension lists plants 6 to 12 feet apart, while a University of New Hampshire Extension ground-cover guide recommends 2 to 4 feet for creeping juniper. These are not one universal interval. Wider spacing uses fewer plants but leaves more open ground while the planting fills in; closer spacing can close the gaps sooner. Cultivar size matters, so compare the selected plant’s expected spread with the desired coverage and follow the nursery label or ask a local extension service for a site-specific plan.
For context, North Carolina State Extension gives the species a typical height range of about 6 inches to 2 feet and spread of about 8 feet; it notes a possible mat spread of 10 feet. The variation is another reason to plan from the cultivar, not the species name alone. North Carolina State Extension · University of New Hampshire Extension ground-cover guide
Rank #2
- Vibrant Year-Round Color: Features stunning, dense silvery-blue foliage throughout the spring and summer that gracefully transitions to a rich, purplish-blue tint during the cold winter months.
- Low-Growing Ground Cover: Reaches a mature height of just 4 to 6 inches while spreading aggressively up to 6 to 8 feet wide, forming a thick, weed-suppressing carpet over your soil.
- Erosion Control & Slope Master: An excellent, deep-rooting choice for stabilizing steep banks, filling in rocky terraced landscapes, and preventing soil erosion in areas difficult to mow.
- Extremely Hardy & Resilient: Thrives in USDA Growing Zones 3 through 9, adapting beautifully to full sun, poor rocky soils, extreme heat, drought, and urban environments once established.
- ow-Maintenance Starter Plants: These ready-to-plant starter plugs save you time and money, establishing rapidly with high resistance to pests, deer, and common plant diseases.
Help new plants establish and keep weeds from taking over
The UNH guide’s advice is for ground-cover plantings generally, rather than a species-specific watering schedule. It recommends watering during dry periods, with occasional thorough soaking rather than frequent light watering. It also suggests occasional hand weeding with little soil disturbance. A 1-to-2-inch layer of leaf mold, compost or similar organic mulch can help conserve moisture and reduce weed growth while plants fill in.
Once established, creeping juniper is often described as low-care, but the open spaces between low-growing branches can still allow weeds to germinate and compete. The UNH guide also suggests that clipping the ends of main branches for two or three seasons after planting may encourage denser branching; treat this as an optional practice, not a required pruning schedule.
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Rank #3
- Stunning Blue Rug Juniper Wiltonii features striking silvery-blue foliage, perfect for adding color and texture to your garden
- Low-maintenance ground cover plant thrives in sunny locations, creating a lush carpet-like appearance with minimal upkeep required
- Ideal for erosion control, its dense, spreading habit stabilizes soil on slopes and banks, preventing soil loss effectively
- Adaptable and versatile, this resilient juniper tolerates a variety of soil types, including sandy and rocky conditions
- Perfect for rock gardens, borders, and edges, Blue Rug Juniper Wiltonii adds a sophisticated touch to any landscape design
Watch for pests and disease without assuming they will occur
North Carolina State Extension lists aphids, bagworms, caterpillars, false spider mites, juniper scale, juniper tip mite, juniper webworm and spruce spider mites among possible pests. Potential diseases include Cercospora needle blight, Phomopsis and other blights, and rust. The rust it describes can produce “cedar apples” on juniper twigs and dark leaf spots on apple leaves. These are possibilities, not inevitable problems; identify the symptom and consult a local extension service before choosing a treatment. North Carolina State Extension
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Check hardiness information against the cultivar and local conditions
Published hardiness ranges differ: Virginia Cooperative Extension lists USDA Zones 4 to 9, while Oregon State University lists the species as hardy to Zone 3. Because cultivar identity and local climate matter, check the plant supplier’s label and regional guidance rather than treating either range as a guarantee for every creeping juniper.
Rank #4
- Stunning Blue Rug Juniper Wiltonii features striking silvery-blue foliage, perfect for adding color and texture to your garden
- Low-maintenance ground cover plant thrives in sunny locations, creating a lush carpet-like appearance with minimal upkeep required
- Ideal for erosion control, its dense, spreading habit stabilizes soil on slopes and banks, preventing soil loss effectively
- Adaptable and versatile, this resilient juniper tolerates a variety of soil types, including sandy and rocky conditions
- Perfect for rock gardens, borders, and edges, Blue Rug Juniper Wiltonii adds a sophisticated touch to any landscape design
Virginia Cooperative Extension · Oregon State University
Quick Recap
Best Value
- Stunning Blue Rug Juniper Wiltonii features striking silvery-blue foliage, perfect for adding color and texture to your garden
- Low-maintenance ground cover plant thrives in sunny locations, creating a lush carpet-like appearance with minimal upkeep required
- Ideal for erosion control, its dense, spreading habit stabilizes soil on slopes and banks, preventing soil loss effectively
- Adaptable and versatile, this resilient juniper tolerates a variety of soil types, including sandy and rocky conditions
- Perfect for rock gardens, borders, and edges, Blue Rug Juniper Wiltonii adds a sophisticated touch to any landscape design
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