Artemisia tridentata ssp. wyomingensis - Big Sagebrush- Spokane: kʷ’el’kʷ’mníłp / Zone 3 (-40F)/ Sun - One of the most iconic plants of the American west. Silvery foliage cycles through shades of blue, green and silver, but looks lovely all year. Smells nice after a rainstorm. No irrigation necessary once established. Long lived and rather slow growing. Great choice for tough dry sites.