Blue Rug Juniper
Juniperus horizontalis 'Wiltonii'
Blue Rug Juniper: Nature’s Silver-Blue Carpet
Snapshot
Common Name: Blue Rug Juniper, Wilton's Carpet Juniper
Scientific Name: Juniperus horizontalis 'Wiltonii'
Hardiness: Zones 3 – 9 (Completely indifferent to New Jersey’s humidity or deep freezes)
Vibe: Sleek, trailing, and serene; the "Liquid Metal" of the plant world.
Landscape Performance: Low Profile, High Impact
Ultra-Low Growth: This is one of the flattest evergreens in existence, rarely rising more than 4–6 inches off the ground. It provides a clean, modern look that highlights the contour of your land rather than hiding it.
Living Mulch: Because it forms such a dense, interlocking mat of foliage, it acts as a permanent mulch. Once established, it shades the soil so thoroughly that weed seeds rarely get a chance to see the sun.
Winter Transformation: While it stays a brilliant silver-blue most of the year, a Jersey cold snap often coaxes out a beautiful, subtle purple or plum tint in the foliage, adding a layer of seasonal "mystery."
Soft Drapery: Its long, trailing branches are designed to follow the terrain. If you plant it near a ledge or a container edge, it will flow downward like a slow-motion waterfall.
New Jersey Resilience
Deer Resistance: Like its taller cousins, Blue Rug is not on the local menu. The texture and scent are enough to keep the neighborhood herds moving along to someone else’s Hostas.
Salt & Sand Specialist: Whether it’s the salt spray of a coastal garden or the winter road salt of a suburban sidewalk, this juniper handles it with ease. It’s a "shore-style" plant that thrives even miles from the Atlantic.
Erosion Control: If you have a sunny bank that washes away every time we get a heavy Jersey downpour, Blue Rug is your best friend. Its roots "knit" into the soil, holding it firmly in place while the foliage protects the surface.
Gardener Chronicles: A Coastal Transformation
"I have a property in Spring Lake with a small slope that leads down to a sandy area where grass simply refused to grow. I was tired of looking at bare dirt and weeds. I bought several pots of Blue Rug Juniper and spaced them out about 3 feet apart. Two seasons later, the whole area is a solid, gorgeous carpet of blue. It looks so high-end, and I haven't had to do anything but watch it grow. It even handles the salt air from the ocean without a single brown tip."
— Leah S., Zone 7 Gardener (Spring Lake, NJ)
Designer Tips: Mastering the Ground Game
The "Rock Garden" Anchor: Tuck Blue Rug into the crevices of a rock garden. Its silver-blue foliage provides a stunning color contrast against gray granite or brown fieldstone.
Draping over Walls: Plant it 6 inches back from the edge of a retaining wall. Within a season, it will begin to "spill" over the side, softening the hard lines of the masonry.
The "No-Mow" Slope: On a steep, sunny hill where a lawnmower is a safety hazard, mass-plant Blue Rug. You’ll get year-round color and zero maintenance.



