Blue Rug Juniper Juniperus horizontalis ‘Wiltoni’ Description Blue foliage in the Summer that turns purple-blue foliage in the Winter.Growth Habit: Dense, spreading and trailing Mature Height: 4” to 6” (10cm to 15cm)Mature Spread: 5' to 6.5' (150cm to 195cm)Growth Rate: Moderate More Details Sun Exposure: Full sunCold Hardiness Zone: 3Drought and heat tolerantDeer resistantGood for erosion controlLandscape Uses: Ground cover. Accent in a garden or rock garden.