|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 1 inch long).
Penstemons like dry but rich soil. They are summer bloomers, attract hummingbirds, and will keep your garden exciting after the spring colors have faded away.
Penstemon montanus subsp. idahoensis is a clump-forming perennial, bearing short, dense spikes of lavender flowers in summer. Grows 6 inches tall, 9 inches wide.