Rocky Mountain beardtongue, with its spikes of bright blue flowers and evergreen foliage, is one of the easiest-to-grow Penstemon. Long-lived, this beauty thrives in most any well-drained soil with full sun exposure. Drought resistant/drought tolerant plant (xeric).

Common Name

Rocky Mountain Beardtongue

Botanical Name

Penstemon strictus


4, 5, 6, 7, 8, 9

Light Requirements

Full Sun

Flower Color

Blue, Purple

Mature Height

24-30" tall

Mature Spread

36" wide

Bloom Time

Mid to late spring

Ships As

Potted Plant

Evergreen Foliage


Soil Type

Sandy Soil, Average Soil

Soil Moisture

Drought Resistant / Waterwise

Amount Of Rain

10 to 20", 20 to 30", 30 to 40" (with care)


Easy To Grow, Attract Hummingbirds, Attract Birds, Bee Friendly, Rabbit Resistant, Native, Low Maintenance, Evergreen, Multiplies / Naturalizes, Good For Erosion Control

Ideal Region

West, Western Only, Southwest, Suitable Above 7000 ft

Planting Time

Spring / Summer, Fall


Rocky Mountain Penstemon