Juniperus horizontalis 'Wiltonii' / Wilton's creeping juniper
Juniperus horizontalis 'Wiltonii' is a dense, compact, slow-growing, very flat selection of creeping juniper with trailing branches and attractive, silver-blue foliage. It is arguably the most popular groundcover juniper in the nursery trade. After 10 years of growth, a mature specimen will measure 6 to 10 feet (2 - 3 m) wide, but only a couple of inches (2 - 3 cm) high, an annual lateral growth rate of 7 to 10 inches (18 - 25 cm).
This cultivar originated as a natural mutation, found in 1914 on the island of Vinalhaven, Maine, by Jacob van Heiningen of South Wilton, Connecticut, USA. It is sometimes seen listed as 'Blue Rug' in the nursery trade.
Juniperus horizontalis 'Wiltonii' at The Gotelli Collection in The U.S. National Arboretum in Washington, D.C. May 2006.
Photo by Dax Herbst
Juniperus horizontalis 'Wiltonii' in a private garden in Kansas, October 2006.
Photo by David Stegmaier
Juniperus horizontalis "Wiltonii' in a private garden in Maine.
Photo by Don Levesque
Juniperus horizontalis 'Wiltonii' — accessioned in 2005 at the Morris Arboretum, Philadelphia, Pennsylvania; photo from 2020.
Photo by Katherine Wagner-Reiss
Juniperus horizontalis 'Wiltonii' / Wilton's creeping juniper
RECOMMENDED HARDINESS ZONES:
4 (-20 to -30 F / -28.9 to -34.4 C)
HORTICULTURAL STATUS: Established
COLOR: Blue Green
TRINOMIAL TYPE: Cultivar
GROWTH SHAPE: Prostrate or Ground Covering
GROWTH SIZE: Intermediate: 6 to 12 inches (15 – 30 cm) per year / 5 to 10 feet (1.5 – 3 m) after 10 years
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Explore other Juniperus horizontalis trinomial
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Juniperus horizontalis 'Admirabilis'
Juniperus horizontalis 'Adpressa'
Juniperus horizontalis 'Alpina'
Juniperus horizontalis 'Argentea'
Juniperus horizontalis 'Banff' / Banff creeping juniper
Juniperus horizontalis 'Bar Harbor' / Bar Harbor creeping juniper
Juniperus horizontalis 'Blue Chip' / Blue Chip creeping juniper
Juniperus horizontalis 'Blue Forest' / Blue Forest creeping juniper
Juniperus horizontalis 'Blue Horizon' / Blue Horizon creeping juniper
Juniperus horizontalis 'Blue Mat' / Blue Mat creeping juniper
Juniperus horizontalis 'Blue Moon' / Blue Moon creeping juniper
Juniperus horizontalis 'Blue Prince' / Blue Prince creeping juniper
Juniperus horizontalis 'Blue Pygmy' / Blue Pygmy creeping juniper
Juniperus horizontalis 'Blue Rug' / Blue Rug creeping juniper
Juniperus horizontalis 'Copper Harbor' / Copper Harbor creeping juniper
Juniperus horizontalis 'Douglasii' / Waukegan creeping juniper
Juniperus horizontalis 'Dunvegan Blue' / Dunvegan Blue creeping juniper
Juniperus horizontalis 'Emerald Spreader' / Emerald Spreader creeping juniper
Juniperus horizontalis 'Emerson' / Emerson creeping juniper
Juniperus horizontalis 'Filicina' / Filicina creeping juniper
Juniperus horizontalis 'Glauca' / Glauca creeping juniper
Juniperus horizontalis 'Glenmore' / Glenmore creeping juniper
Juniperus horizontalis 'Glomerata' / Glomerata creeping juniper
Juniperus horizontalis 'Golden Carpet' / Golden Carpet Creeping juniper
Juniperus horizontalis 'Gracilis' / Gracilis creeping juniper
Juniperus horizontalis 'Grey Carpet' / Grey Carpet creeping juniper
Juniperus horizontalis 'Grey Forest' / Grey Forest creeping juniper
Juniperus horizontalis 'Hughes' / Hughes creeping juniper
Juniperus horizontalis 'Humilis'
Juniperus horizontalis 'Jade Spreader' / Jade Spreader creeping juniper
Juniperus horizontalis 'Limeglow' / Limeglow creeping juniper (TM) 'LCH47'
Juniperus horizontalis 'Livida' / Livida creeping juniper
Juniperus horizontalis 'Livington'
Juniperus horizontalis 'Marcellus' / Marcellus creeping juniper
Juniperus horizontalis 'Monber (Ice Blue)' / Ice Blue Juniper
Juniperus horizontalis 'Montana' / Montana creeping juniper
Juniperus horizontalis 'Mother Lode' / Mother Lode creeping juniper
Juniperus horizontalis 'Pancake' / Pancake creeping juniper
Juniperus horizontalis 'Petraeus' / Petraeus creeping juniper
Juniperus horizontalis 'Planifolia' / Planifolia creeping juniper
Juniperus horizontalis 'Plumosa' / Andorra Juniper
Juniperus horizontalis 'Plumosa Compacta'
Juniperus horizontalis 'Prince of Wales' / Prince of Wales creeping juniper
Juniperus horizontalis 'Procumbens'
Juniperus horizontalis 'Prostrata' / Prostrate creeping juniper
Juniperus horizontalis 'Pulchella' / Pulchella creeping juniper
Juniperus horizontalis 'Sea Spray' / Sea Spray creeping juniper
Juniperus horizontalis 'Turquoise Spreader' / Turquoise Spreader creeping juniper
Juniperus horizontalis 'Two Medicine' / Two Medicine creeping juniper
Juniperus horizontalis 'Variegata' / Variegated creeping juniper
Juniperus horizontalis 'Venusta' / Venusta creeping juniper
Juniperus horizontalis 'Viridis' / Viridis creeping juniper
Juniperus horizontalis 'Wapiti' / Wapiti creeping juniper
Juniperus horizontalis 'Watnong' / Watnong creeping juniper
Juniperus horizontalis 'Waukegan' / Waukegan creeping juniper
Juniperus horizontalis 'Webberi' / Webberi creeping juniper
Juniperus horizontalis 'Wilms' / Wilms creeping juniper
Juniperus horizontalis 'Youngstown' / Youngstown creeping juniper
Juniperus horizontalis 'Yukon Bell' / Yukon Bell creeping juniper
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