Salvia dorrii (Desert purple sage)

Giant-flowered purple sage has been winning over gardeners the past few years for its remarkable summer blooms and tough-as-nails demeanor. Native to the dry foothills and mountains of southern California, this sage is considered a woody shrub. It features showy, aromatic silver foliage and bicolored flower spikes with lavender-purple calyces and long, hummingbird-pollinated blue flowers. It grows from 24 to 36 inches high.

This easy to grow evergreen yucca bears dramatic, sword-shaped yellow leaves with a dark green edge. Not as staunchly upright as some yuccas, its leaf tips sometimes droop with age. Its foliage color is best from fall to spring. Plants grow to nearly 2 feet in height and 3 feet in width. In summer, it produces a 6-foot-tall spike covered with nodding, fragrant, white bell-shaped flowers.

This evergreen or deciduous subshrub is grown for its attractive, dark green aromatic foliage and its light pink to deep purple flowers, which blossom in summer and early fall. This garden workhorse can be used in troughs, containers, low hedges, knot gardens, rock gardens, or as edging.

This compact, evergreen subshrub has glossy, dark green leaves and grows to only 5 inches tall and 16 inches wide. It bears long-lasting, lavender flowers, and it is a great choice for low edging or for a rock garden.