Creeping Juniper
Juniperus horizontalis
A hardy, low-maintenance evergreen ground cover that forms dense, spreading mats perfect for slopes and difficult areas. This native North American plant offers year-round color with needle-like foliage that ranges from blue-green to purplish in winter. Extremely drought tolerant once established, making it ideal for xeriscaping and low-water gardens.
Sun
Full sun
Zones
3–9
USDA hardiness
Height
6-18 inches
Planting Timeline
Showing dates for Creeping Juniper in USDA Zone 7
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Creeping Juniper · Zones 3–9
Growing Details
Zone-by-Zone Planting Calendar
Complete Growing Guide
Light: Full sun (6 or more hours of direct sunlight a day). Soil: Sand, Shallow Rocky. Soil pH: Acid (<6.0), Neutral (6.0-8.0). Drainage: Good Drainage, Occasionally Dry. Height: 0 ft. 6 in. - 1 ft. 6 in.. Spread: 4 ft. 0 in. - 10 ft. 0 in.. Spacing: 6-feet-12 feet. Growth rate: Medium. Maintenance: Low. Regions: Coastal, Mountains, Piedmont.
Harvesting
No fruits, cones are blue 2 to 3-seeded and berry-like on recurved stalks appear the second year after pollination. They are less than 1/2 inch wide. May or may not be present on cultivars.
Color: Blue. Length: < 1 inch. Width: < 1 inch.
Storage & Preservation
Creeping Juniper is a living plant requiring outdoor cultivation; it does not have a harvest or storage phase like edibles. Maintain in full sun with well-draining soil. Overwatering is the primary concern—ensure soil dries between waterings, especially in winter dormancy. No cold storage needed; established plants are extremely hardy to USDA zones 3-9. Propagation methods include cuttings in summer (rooted in sand/perlite mix), or division of mature spreading stems. For container specimens, repot in spring into gritty, fast-draining soil.
History & Origin
Origin: Northern North America into Canada
Advantages
- +Forms dense mats quickly, ideal for stabilizing slopes and erosion control
- +Extremely drought tolerant once established, perfect for xeriscaping and water conservation
- +Year-round color interest with seasonal foliage shifts from blue-green to purple
- +Requires minimal maintenance and thrives in poor soils other plants reject
- +Native North American species supports local ecosystems and wildlife habitats
Considerations
- -Susceptible to juniper blight and root rot in wet, poorly drained soils
- -Scale insects and spider mites frequently infest creeping juniper in stressed conditions
- -Dense mat growth can harbor pests and disease if air circulation poor
- -Very slow to fill in initially, requiring 2-3 years for complete coverage
Companion Plants
Lavender, Sedum, and Russian Sage are your best neighbors here — all three thrive in lean, well-drained soil at full sun and stay well-behaved in the 6.0–8.0 pH range where juniper does its best work. Ornamental grasses and Yucca add vertical structure without shading the low-spreading stems. Black Walnut is a hard no: its roots release juglone, an allelopathic compound that causes chlorosis and dieback across a broad range of plants, and in zone 7 Georgia it's common enough in older yards that you should actually check your property lines before planting. Apple and Hawthorn belong on a different side of the garden entirely — both host cedar-apple rust (Gymnosporangium juniperi-virginianae), a fungal disease that completes half its two-host life cycle on juniper and can badly disfigure new growth.
Plant Together
Lavender
Shares similar drought tolerance and well-draining soil requirements, creates attractive color contrast
Ornamental Grasses
Complement the texture and provide vertical interest while sharing similar low-maintenance requirements
Sedum
Both are drought-tolerant succulents that thrive in poor, well-draining soils
Russian Sage
Similar drought tolerance and creates beautiful textural contrast with aromatic foliage
Yucca
Shares preference for dry, sandy soils and adds architectural interest
Pine Trees
Natural companions in native habitats, both tolerate acidic soil and similar growing conditions
Cotoneaster
Similar growth habits and soil preferences, both are low-maintenance groundcovers
Wild Bergamot
Attracts beneficial insects and pollinators while tolerating similar growing conditions
Keep Apart
Black Walnut
Produces juglone, a chemical compound toxic to many conifers including junipers
Apple Trees
Junipers can host cedar-apple rust fungus which severely damages apple trees
Hawthorn
Susceptible to cedar-hawthorn rust, with junipers serving as alternate host for this fungal disease
Pests & Disease Resistance
Resistance
Generally disease resistant, good pest tolerance
Common Pests
Scale insects, spider mites, bagworms
Diseases
Root rot in poorly drained soils, juniper blight
Troubleshooting Creeping Juniper
What you'll see, why it happens, and what to do about it.
Needles turning gray-brown with a sooty, crusty coating on stems, most visible in late spring
Likely Causes
- Scale insects (juniper scale, Carulaspis juniperi) — sedentary, hard to spot until populations are large
- Bagworms (Thyridopteryx ephemeraeformis) — caterpillars that build spindle-shaped bags from foliage fragments
What to Do
- 1.In late May to early June when crawlers are active, spray with horticultural oil (2% solution) — this is your best window before they harden their shells
- 2.Hand-pick bagworm bags in fall and winter when they're easy to see; drop them in a bucket of soapy water
- 3.For heavy scale infestations, NC State Extension recommends a dormant oil application in late winter before new growth starts
Branch tips dying back from the tips inward, with reddish-brown discoloration spreading down the stems in spring
Likely Causes
- Juniper blight (Phomopsis juniperovora) — a fungal disease that hits new growth during wet, cool springs
- Kabatina tip blight — similar dieback but infects through wounds and appears earlier in the season than Phomopsis
What to Do
- 1.Prune out all blighted tips at least 4-6 inches below the discolored tissue; sterilize your pruners between cuts with a 10% bleach solution
- 2.Avoid overhead irrigation — drip or soaker hose keeps foliage dry and cuts disease pressure significantly
- 3.Don't push soft new growth with a heavy nitrogen application after an outbreak; Phomopsis hits that tender tissue hardest
Plant wilting or showing overall decline with yellowing foliage despite adequate rainfall, roots appearing brown and mushy when pulled
Likely Causes
- Root rot (Phytophthora spp.) — almost always tied to poorly drained soil or low spots that hold water after rain
- Planting too deep — burying the crown even 2-3 inches too low keeps the root collar wet and invites rot
What to Do
- 1.If caught early, improve drainage immediately: cut a swale to redirect water away, or excavate and replant in a raised bed amended with coarse sand or pea gravel
- 2.There's no chemical cure for established Phytophthora root rot — a badly affected plant should come out before it spreads to neighboring plants
- 3.At planting, set the crown at or slightly above grade and mulch 3-4 inches out from the plant, keeping mulch 2 inches clear of the stems
Frequently Asked Questions
Is Creeping Juniper a good ground cover for beginners?▼
How long does Creeping Juniper take to establish and spread?▼
Can you grow Creeping Juniper in containers?▼
When should I plant Creeping Juniper?▼
Does Creeping Juniper change color in winter?▼
How do you control pests on Creeping Juniper?▼
Growing Guides from Wind River Greens
Where to Buy Seeds
Sources & References
External authority sources used in compiling this guide.
- ExtensionNC State Extension
See the Methodology page for how this data is sourced, what's AI-assisted, and known limitations.