WSU Clark County Extension

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Blue Rug Creeping Juniper

Scientific name: Juniperus horizontalis 'Wiltonii'

Type:Groundcovers evergreen
Plant Requirements
Zone:3 to 9
Plant Characteristics
Height:0 ft
Width:6 ft
Additional Characteristics



Wildlife value

Description Wiltonii juniper, often referred to in the trade as Blue Rug juniper, is an excellent evergreen groundcover for a multitude of different soil types and sites. Over time a planting of the Blue Rug juniper will provide a dense, low growing carpet that prevents weed growth and keeps the soil intact.

As a coniferous groundcover this juniper features bright blue foliage during the summer with a darker, reddish blue coloration during the winter. The vines are flat growing, and the foliage typically only grows 4” tall. With time each plant can grow to a width of 6’-8’. Leaves are soft textured, and mostly scale-like. Fleshy seed cones (dark blue berries) generally mature in two years, but are often absent on cultivated plants.

This plant grows well on all soil types, and requires no pruning other than for along side a flower bed where it can creep into the grass. It is often used in rockery plantings where it forms a very nice cascading effect as it spreads out.

Avoid wet sites that can encourage root rots.
For assistance, contact Dr. Charles Brun (, (360) 397-6060 5701
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