Blue Rug Juniper – Juniperus horizontalis

Blue Rug Juniper
Juniperus horizontalis
Height: up to ½’ / Spread: 6-8′
Habit/Form: Low, flat, spreading / Zone: 3-9

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Blue Rug Juniper
Needles and Berries

Cultural Requirements: Best in dry, well-drained soil in full sun. Established plants withstand drought and wind. salt-tolerant. Resistant to most pests (including deer) and to cedar rust. Susceptible to juniper twig-blight diseases that can cause branch die-back. South of the Chicago region, bagworm can be a problem.

Ornamental Characteristics: A very low, flat, spreading or trailing, dense, female evergreen shrub with prickly, silvery-blue foliage that turns light purplish in winter. Plants of this female cultivar produce berry-shaped cones that, if pollinated, ripen to a bluish color. (Male plants of J. horizontalis produce small, inconspicuous cones resembling catkins that produce pollen.) Uses in the Landscape: Use as a year-round ground cover, in foundation plantings, on slopes, or trailing over ledges.


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Family Cupressaceae Redwood, Cypress, Arborvitae, Juniper
There are thirty (many monotypic) genera and 142 species in the family Cupressaceae, now widely regarded as including the Taxodiaceae, previously treated as a family. The Cupressaceae are found in the fossil record as far back as the Jurassic Period, about 210 million years ago. Cupressaceae Index | Tree Encyclopedia | Trees Index