perennial

Rocky Mountain Beard Tongue

Penstemon strictus

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Rocky Mountain Beard Tongue (Penstemon strictus) at Eagle Crest Nursery

Rocky Mountain Beard Tongue flowers

Rocky Mountain Beard Tongue flowers

(Photo courtesy of NetPS Plant Finder)

Plant Height:  18 inches

Flower Height:  30 inches

Spacing:  14 inches

Sunlight:  full sun  partial shade 

Hardiness Zone:  3a

Other Names:  Beardtongue

Description:

A pretty, colorful variety producing long spires of large, royal blue-purple tubular flowers; makes a beautiful visual impact when massed in the garden, along walkways, or in borders; drought tolerant once established; easy to grow and low maintenance

Ornamental Features

Rocky Mountain Beard Tongue has masses of beautiful spikes of royal blue tubular flowers with purple overtones rising above the foliage from late spring to early summer, which are most effective when planted in groupings. The flowers are excellent for cutting. Its narrow leaves remain green in color throughout the season.

Landscape Attributes

Rocky Mountain Beard Tongue is an herbaceous perennial with an upright spreading habit of growth. Its relatively fine texture sets it apart from other garden plants with less refined foliage.

This is a relatively low maintenance plant, and is best cleaned up in early spring before it resumes active growth for the season. It is a good choice for attracting bees, butterflies and hummingbirds to your yard. It has no significant negative characteristics.

Rocky Mountain Beard Tongue is recommended for the following landscape applications;

  • Mass Planting
  • Rock/Alpine Gardens
  • Border Edging
  • General Garden Use
  • Container Planting

Planting & Growing

Rocky Mountain Beard Tongue will grow to be about 18 inches tall at maturity extending to 30 inches tall with the flowers, with a spread of 30 inches. When grown in masses or used as a bedding plant, individual plants should be spaced approximately 14 inches apart. It grows at a medium rate, and under ideal conditions can be expected to live for approximately 10 years. As an herbaceous perennial, this plant will usually die back to the crown each winter, and will regrow from the base each spring. Be careful not to disturb the crown in late winter when it may not be readily seen!

This plant does best in full sun to partial shade. It prefers dry to average moisture levels with very well-drained soil, and will often die in standing water. It is considered to be drought-tolerant, and thus makes an ideal choice for a low-water garden or xeriscape application. This plant does not require much in the way of fertilizing once established. It is not particular as to soil type or pH. It is highly tolerant of urban pollution and will even thrive in inner city environments. This species is native to parts of our region. It can be propagated by division.

Rocky Mountain Beard Tongue is a fine choice for the garden, but it is also a good selection for planting in outdoor pots and containers. With its upright habit of growth, it is best suited for use as a 'thriller' in the 'spiller-thriller-filler' container combination; plant it near the center of the pot, surrounded by smaller plants and those that spill over the edges. Note that when growing plants in outdoor containers and baskets, they may require more frequent waterings than they would in the yard or garden.

 
 
Hardiness Zone Plant Height Minimum Sunlight
Characteristics
Massing  Rock  Edging  Garden  Container 
Applications
Flowers  Attracts Wildlife 
Ornamental Features