Alberta spruce

:  a white spruce (Picea glauca albertiana) of the northwestern United States and Canada; especially :  a slow-growing, dwarf, cone-shaped cultivar (Picea glauca albertiana conica) grown as an ornamental Many homeowners use Alberta spruce as year-round color near their front door. — Marilee Spanjian, The Tennessean, 23 Feb. 2003 Dwarf Alberta spruce grows in the perfect, conical, Christmas-tree form; it is densely covered with foliage, so decorations don't hang as much as protrude from its surface. — Marty Wingate, Seattle Post-Intelligencer, 6 Dec. 2001