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.
From the Pyrenees. Forms wide, 8–12-in.-tall mats composed of 1–1 1/2-in., soft gray-green...
Bears rose-pink flowers in fall.
Plant is 1 ft. tall and 2 ft. wide; has lilac blooms and resists mildew.