Blue rug juniper (Juniperus horizontalis "Wiltoni") is a nice, low-growing evergreen shrub. Its foliage is thick and hugs the ground, achieving a maximum height of 6 to 8 inches (15.2 to 20.3 centimeters). During the warmer months, blue rug juniper foliage is silvery blue-green; during the autumn and winter, the evergreen becomes purplish blue. It brings an unexpected splash of color to any fading landscape.
Blue rug junipers make a great, hardy addition to embankments (they hold soil and prevent erosion well) or to any sunny area. They're also highly adaptable to different soil and water conditions [source: Nature Hills Nursery]. Installing some around a tall plant or shrub like a gardenia or dwarf crape myrtle will provide colorful contrast all year [source: Wilson Bros. Nursery]. In the fall, the purple juniper will pop against dark green evergreen leaves of broadleaf plants.