Ground covers, Perennials
These showy perennials bear clusters of small, tubular, five-petaled flowers, usually in summer. Most are fast-growing groundcovers, good in parking strips, along driveways, and on dry banks; also attractive in wall crevices and hanging baskets. Best in hot weather. Need good air circulation (to avoid mildew) and well-drained soil, especially in winter. Many are treated as annuals. There are many hybrid groups, which often confuses the botany.Verbena bipinnatifida
Perennial, native from western Great Plains to Mexico. Grows to 8–16 in. high and 1/2 ft. or wider. Finely divided leaves and blue flowers. Self-sows. ‘Valley Lavender’ is low growing, just 3–6 in. high, with bright lavender flowers over a long period. Little water.
Himalayan native to 1 1/2 ft. high, spreading by rhizomes. Long-stalked, medium green, 2 1/2-in.-wide ...
Excellent groundcover, 6–8 in. high, spreading slowly but widely. Pleasantly scented, dark green...
Bears rose-pink flowers in fall.