Rocky Mountain Penstemon - <i>Penstemon strictus</i>

General Characteristics: An erect, evergreen herbaceous plant with medium-sized green leaves.

Flowers and Fruits: Flowers mid- to late summer. Flowers are purple.

Height: Flowering stalks 1-2 feet.

Width: 8-15 inches.

Horticultural Notes: Available commercially with searching. Once established, requires no irrigation.