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The Plant Guide

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Blue rug juniper

Juniperus horizontalis 'Wiltonii'

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This creeping shrub has a prostrate form and dense, steely blue foliage. The mature height is 1 foot tall. Scale-like green leaves turn a dull purple in winter. Blue rug juniper creates a flat ground cover. It grows 6 to 12 inches per year and bears ovoid dark blue fruit.

Noteworthy CharacteristicsExcellent in a rock garden or on banks to prevent erosion.

CareGrows well in well-drained soil and tolerates a wide variety of types of soils and conditions.

PropagationTake ripe cuttings in late autumn through winter and root in a humid cold frame. Or take softwood cuttings in summer under mist with bottom heat.

ProblemsLeaf miners, bark beetles, scale insects, aphids, mites, and caterpillars. Phomopsis twig blight, Gymnosporangium (cedar-apple) rust, dieback and canker, lesion nematodes, brown felt blight, and various heart and wood rots.

  • Genus : Juniperus
  • Plant Height : 1 to 3 feet
  • Zones : 3, 4, 5, 6, 7, 8, 9
  • Plant Width : 6 to 10 feet
  • Moisture : Dry to Medium
  • Light : Full Sun to Partial Shade
  • Uses : Ground Covers
  • Characteristics : Showy Foliage, Showy Fruit
  • Plant Type : Shrubs
  • Plant Seasonal Interest : Winter Interest
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