Juniper, Blue Rug JuniperBlue Rug Juniper is a female coniferous shrub noted for its dense prostrate form. The spiny aromatic needle like foliage is silver blue and earns purple tones in winter. Blue Rug is a female cultivar, and will produce blue black fleshy seed cones that mature in two years. Best planted in full sun and well drained soils. Drought Tolerant once established. Type: Shrub Origins: Alaska, Canada, and Northern US Height: ~0. 5' Spread: 6' 8' Spacing: 6' USDA