Evergreen, Perennials, Shrubs
Several species are valuable for interesting leaf patterns and silvery gray or white aromatic foliage (flowers are generally insignificant). Most kinds are excellent in mixed borders, where their white or silvery leaves soften harsh reds and oranges and blend beautifully with blues, lavenders, and pinks. Provide good drainage. Cut nonwoody-stemmed perennials to ground in late fall to rejuvenate; prune back woody perennials and shrubs (into older wood if necessary) before first flush of spring growth. Divide perennials in spring or fall; propagate shrubs by cuttings.
Native to the Great Basin of the western United States. Many-branched, silvery-looking plant. Narrow, very aromatic, hairy gray leaves are 3/4 in. long, usually with three teeth at the tip. Insignificant flowers. Emits the pungent fragrance for which Western deserts are known. Grows easily in any sunny, well-drained spot. Does well with no irrigation.
Native from British Columbia to California. Grows to 6–24 in. high, about 9 in. wide. Pale viole...
Native to Iran, Afghanistan, and central Asia. Absolutely covered with slender, sinuous spikes of...
Native to the eastern half of North America, extending southwest to Arizona. The species is rarely off...