There are some 250 species of penstemon. Most are native to the West, ranging from Canada into Mexico; some grow on highest mountains, some in the desert, others in forest glades, in foothills, on plains. A few are widely available, but most are sold only by specialists. Some of the perennials described here have woody-based stems, while others are herbaceous. Most species have narrowish, pointed leaves; those in basal foliage clump are larger, those on flower stems smaller.Narrowly bell-shaped, lipped flowers (usually 3/4 to 1 1/2 in. long) are most commonly seen in bright reds and blues, but they also come in shades from soft pink through salmon and peach to deep rose, lilac, dark purple, white, and, rarely, yellow. Blossoms of some species attract hummingbirds.
Need fast drainage. Species in particular benefit from rock garden conditions. Usually short lived (3 or 4 years). Hybrids and selections tend to be easier to grow than wild species alongside regular garden plants; wild kinds may die quickly if given too-rich soil and too much water. In dry years or with restricted water, however, plants of wild species may thrive.Penstemon cardinalis
Native to southern NewMexico and Texas. Leafy habitto 2 1/2 ft. high, 2 ft. wide. Large, leathery, dark green foliage. Dark red flowers bloom all summer; very popular with hummingbirds. Long-lived, adaptable plant that thrives even in areas with humid summers.
Perennial. Fast-growinghybrid to 6–8 ft. tall and 3–4 ft.wide, with long, narrow leaves.Produces many ...
Native from Maine to Minnesota, south to Florida, Arizona, and Mexico. Light green leaves form a compa...
Native to Mexico, Guatemala. Grown in listed Zones, but must be lifted and stored in cold-winter clima...