Ground covers, Perennials
Valued for clusters of intense blue, phloxlike flowers that bloom in summer to late fall, when cool hues are often especially welcome in the garden. (For pale blue-flowered Cape plumbago, see Plumbago auriculata.) Tolerates inconsistent watering. Shrubby species are usually treated like perennials in colder zones; cut them back after bloom and apply a thick mulch.
Native to China. Wiry-stemmed groundcover to 6–12 in. high. Bronzy to dark green, 3-in.-long leaves turn reddish brown with frosts. Blooms well only in areas with a long growing season. Most striking in early or midautumn, when blue blossoms contrast with red fall foliage. In loose soil and where the growing season is long, spreads rapidly and (eventually) widely by underground stems. Plant 1–1 1/2 ft. apart for quick cover. When plants show signs of aging, dig up and replace with rooted stems in spring or summer.
Velvety crimson flowers. Leathery leaves on 10-ft. stems make this suitable as a flowering groundcover...
Slender, upright grower that reaches 30 ft. tall and 15 ft. wide. It’s an excellent specimen tre...
Deciduous shrub from eastern Asia. Grows to 10–12 ft. tall and 6 ft. wide. Upright and compact w...