|This short-lived perennial, often treated as an annual in colder climates, is grown primarily for it's pretty, tubular, two-lipped flowers (all colors but blue and yellow. The leaves are narrow and lance shaped (up to 8 inches long). Penstemons like dry but rich soil. They are mid summer bloomers, attract hummingbirds, and will keep your garden exciting after the spring colors have faded away.
Penstemon barrettiae is a bushy, clump-forming, semi-evergreen perennial with deciduous stems. Bears in early summer, dense racemes of tubular, bell-shaped, lilac-purple flowers, 1 1/2 inches long. Grows 8 to 16 inches tall, 10 inches wide.