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Native alternative(s) for Juniperus horizontalis 'Wiltonii':
Juniperus communis var. depressa Juniperus comunis var. depressa
Plants that fill a similar niche:
Salvia rosmarinus Rosmarinus officinalis
Dianthus deltoides Dianthus deltoides
Phlox subulata Phlox subulata
Juniperus horizontalis 'Wiltonii' has some common insect problems:
Juniper Pest Management Calendar
Twospotted Spider Mites on Landscape Plants

Juniperus horizontalis 'Wiltonii'

Common Name(s):

Phonetic Spelling
jew-NIP-er-us hor-ih-zon-TAL-iss
Description

'Wiltonii' is a low-growing, evergreen shrub cultivar in the Cupressaceae (cypress) family. It grows as a dense, trailing, creeping form, making an excellent ground cover and for erosion control. The showy blue needles and its coverage give it the common name blue rug.

Growing slowly to a dimiutive hight of 4 to 6 inches and 4 to 6 feet wide it is often planted as a groundcover.  This plant prefers full sun and well-drained, acidic to slightly alkaline soils. It is drought-tolerant, salt-tolerant, and wind tolerant, making it perfect for urban conditions.  It will adapt to the cold, snow, and frost of our colder regions.  Also performs well in the high desert locations where the temperatures fluctuate rapidly.

It has a medium to rapid growth rate and the foliage turns purplish in winter. This plant is seldom damaged by deer.   It grows as a dense, compact, prostrate shrub with trailing branches. 

Many Juniper varieties require moisture and cannot survive on sunny slopes where run off can leave the soil dry. 'Wiltonii' does not require the moisture of other varieties, a great solution for dry, sunny, sloped conditions, or in a drought tolerant garden.  Place along a retaining wall, in the front of a border or along a walkway or patio where the foliage will provide year-round cover and interest.

Quick ID Hints:

  • 100% of leaves are scale leaves and silver-blue in color
  • Leaves grow on only one side of stems
  • Spray is fine-textured and plume-like
  • Branches are long and floppy, forming dense mats
  • The plant produces female cones that are 1/4" in diameter, globose, bluish or greenish-black, and glaucous

Insects, Diseases, and Other Plant Problems:  Spider mites can be an issue.  During the summer months, hose the plants down with a firm spray of water.  This will disrupt web-making.  Juniper blight can cause problems.

VIDEO Created by Elizabeth Meyer for "Trees, Shrubs and Conifers" a plant identification course offered in partnership with Longwood Gardens.

More information on Juniperus horizontalis.

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Cultivars / Varieties:
Tags:
#evergreen#full sun tolerant#drought tolerant#blue needles#salt tolerant#winter interest#air pollution tolerant#erosion control#year-round interest#fast growing#cpp#wind tolerant#well-drained soil#deer resistant#frost tolerant#groundcover#rock garden#fantz#evergreen shrub#poor soils tolerant#evergreen groundcover#border front#walkway planting#urban conditions tolerant#rocky soils tolerant#patio planting#garden walls#dry soils tolerant#purple needles
 
Cultivars / Varieties:
Tags:
#evergreen#full sun tolerant#drought tolerant#blue needles#salt tolerant#winter interest#air pollution tolerant#erosion control#year-round interest#fast growing#cpp#wind tolerant#well-drained soil#deer resistant#frost tolerant#groundcover#rock garden#fantz#evergreen shrub#poor soils tolerant#evergreen groundcover#border front#walkway planting#urban conditions tolerant#rocky soils tolerant#patio planting#garden walls#dry soils tolerant#purple needles
  • Attributes:
    Genus:
    Juniperus
    Species:
    horizontalis
    Family:
    Cupressaceae
    Life Cycle:
    Woody
    Dimensions:
    Height: 0 ft. 4 in. - 0 ft. 6 in.
    Width: 4 ft. 0 in. - 6 ft. 0 in.
  • Whole Plant Traits:
    Plant Type:
    Ground Cover
    Shrub
    Woody Plant Leaf Characteristics:
    Needled Evergreen
    Habit/Form:
    Creeping
    Prostrate
    Spreading
    Growth Rate:
    Rapid
    Maintenance:
    Low
    Texture:
    Fine
  • Cultural Conditions:
    Light:
    Full sun (6 or more hours of direct sunlight a day)
    Soil Texture:
    Clay
    Loam (Silt)
    Sand
    Shallow Rocky
    Soil pH:
    Acid (<6.0)
    Alkaline (>8.0)
    Soil Drainage:
    Good Drainage
    Available Space To Plant:
    12 inches-3 feet
    3 feet-6 feet
    NC Region:
    Coastal
    Mountains
    Piedmont
    USDA Plant Hardiness Zone:
    4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9b, 9a
  • Fruit:
    Fruit Color:
    Black
    Blue
    Fruit Length:
    < 1 inch
    Fruit Width:
    < 1 inch
    Fruit Description:
    No fruits. Plant produces female cones that are 1/4" in diameter, globose, and bluish or greenish-black and glaucous in color.
  • Flowers:
    Flower Description:
    No flowers
  • Leaves:
    Woody Plant Leaf Characteristics:
    Needled Evergreen
    Leaf Color:
    Blue
    Gray/Silver
    Leaf Value To Gardener:
    Showy
    Deciduous Leaf Fall Color:
    Purple/Lavender
    Leaf Type:
    Needles
    Hairs Present:
    No
    Leaf Description:
    All leaves are scale leaves. They are intense silver-blue in color, are closely appressed to stem, and grow on only one side of the stem. The spray is fine-textured and plume-like. Needels turn purplish in the winter.
  • Stem:
    Stem Is Aromatic:
    No
    Stem Description:
    Branches are very long and floppy and form large, dense mats.
  • Landscape:
    Landscape Location:
    Patio
    Rock Wall
    Slope/Bank
    Walkways
    Landscape Theme:
    Drought Tolerant Garden
    Rock Garden
    Winter Garden
    Design Feature:
    Border
    Mass Planting
    Resistance To Challenges:
    Deer
    Erosion
    Salt
    Urban Conditions
    Wind