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.
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