Juniperus horizontalis 'Wiltonii'

Additional Photos
Juniperus horizontalis (Blue Rug Juniper)

Blue Rug Juniper

This Juniper makes a fine-textured, dense, slow growing ground cover comprised of bright blue foliage. Foliage changes to a darker, reddish blue during the winter but new growth in the spring emerges blue.

Natural habitat is dry and windy with full sun exposure. It looks best in an open site with no shade during the day. This allows the foliage to dry quickly in the morning and helps prevent foliage disease from thinning the canopy. A well-drained soil is essential for good growth. Wet soil rots the roots and causes plant decline.

The plant is excellent for low-maintenance landscapes as it requires virtually no pruning, except along the borders of the mass planting as it reaches the edge of the landscape bed. It is one of the best plants for cascading over a wall as the stems hug the contour of the wall. When used as a ground cover plant 3 to 4 feet apart. Blue Rug Juniper is a more common name for this ground-hugging juniper. The plant may reach 2 to 4 inches tall. It cascades down a wall if planted on top, literally hugging the ground. The tallest part of a mass planting is usually where the original plants were installed.

It tolerates exposed sites and a wide range of soils. Full sun makes for the densest canopy of foliage. It will grow in partial shade but may become thin and allow weeds to germinate in the landscape bed. It is very difficult to weed a mass planting of Blue Rug. Once established, this juniper is quite drought-tolerant.

3-6 Inches


6-10 Feet


USDA Hardiness Zone 4A to 9A

Characteristics & Attributes

Ground Cover
Partial Sun/Shade
Growth Rate
Soil Moisture Needs
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