Alphabetical Plant Listing

Penstemon strictus (Rocky Mountain Beardtongue)

Rocky Mountain Penstemon, Rocky Mountain Beardtongue, Strict Beardtongue, Toadflax Beardtongue


A long-lived western native, Penstemon strictus (Rocky Mountain Beardtongue) is an evergreen perennial boasting abundant spires of large, royal-blue to purple flowers rising above a low foliage mat. Blooming for several weeks in late spring and early summer, the tubular flowers attract scores of hummingbirds, bumblebees and other beneficial pollinators. The lustrous emerald green leaves, ranging from grass-like to lance-shaped, remain fresh looking year-round. The beautiful flowers and handsome evergreen foliage make Penstemon strictus attractive for ornamental and landscape plantings. Easy to grow, fuss-free, water-wise, it is perfect for the sunny garden.

  • Grows up to 18-30 in. tall and wide (45-75 cm). Self-sows mildly
  • Performs best in full sun in light, dry, well-drained soils. Drought tolerant once established. Tolerates heavy soils and moisture better than most penstemons.
  • Provides a bold and striking impact in beds and borders, cottage gardens, rock gardens or in containers. Plant in bold groupings.
  • No serious pest or disease issues.
  • Deadhead after flowering to promote vigor.
  • Propagation by seed or root division. Barely scratch seeds into the soil in fall. Make root divisions in early spring, making sure each division has at least one bud.
  • Native from southern Wyoming to Arizona and New Mexico.

Not sure which Penstemon - Beardtongues to pick?
Compare All Penstemon - Beardtongues

Buy Penstemon strictus (Rocky Mountain Beardtongue)

Requirements

Hardiness 3 – 8
Climate Zones 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 10, 11, 12, 13
Plant Type Perennials
Plant Family Penstemon - Beardtongues
Exposure Full Sun
Season of Interest Spring (Late)
Summer (Early)
Height 1' – 3' (30cm – 90cm)
Spread 1' – 3' (30cm – 90cm)
Spacing 36" (90cm)
Water Needs Low
Maintenance Low
Soil Type Chalk, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Showy, Evergreen
Native Plants United States, Rocky Mountains, Colorado, Utah, Wyoming, Southwest, Arizona, New Mexico
Tolerance Drought, Dry Soil, Rocky Soil
Attracts Hummingbirds
Garden Uses Beds and Borders
Garden Styles Gravel and Rock Garden, Informal and Cottage, Prairie and Meadow

Buy Plants

Great Plant Combination Ideas with Penstemon - Beardtongues

Guides with Penstemon - Beardtongues


By Arina P Habich, Shutterstock

While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.


Requirements

Hardiness 3 – 8
Climate Zones 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 10, 11, 12, 13
Plant Type Perennials
Plant Family Penstemon - Beardtongues
Exposure Full Sun
Season of Interest Spring (Late)
Summer (Early)
Height 1' – 3' (30cm – 90cm)
Spread 1' – 3' (30cm – 90cm)
Spacing 36" (90cm)
Water Needs Low
Maintenance Low
Soil Type Chalk, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Showy, Evergreen
Native Plants United States, Rocky Mountains, Colorado, Utah, Wyoming, Southwest, Arizona, New Mexico
Tolerance Drought, Dry Soil, Rocky Soil
Attracts Hummingbirds
Garden Uses Beds and Borders
Garden Styles Gravel and Rock Garden, Informal and Cottage, Prairie and Meadow

Great Plant Combination Ideas with Penstemon - Beardtongues

Guides with Penstemon - Beardtongues

Plant Calculator

How many Penstemon strictus (Rocky Mountain Beardtongue) do I need for my garden?

%
ft
ft

Your Shopping List

Plant Quantity
Penstemon strictus (Rocky Mountain Beardtongue)

Find your Hardiness Zone

Find your Climate Zone

Find your Heat Zone

Join Gardenia.net

Create a membership account to save your garden designs and to view them on any device.

Becoming a contributing member of Gardenia is easy and can be done in just a few minutes. If you provide us with your name, email address and the payment of a modest $25 annual membership fee, you will become a full member, enabling you to design and save up to 25 of your garden design ideas.

Join now and start creating your dream garden!

Create a New Collection

Optional. For your reference.


Move Selected Plants to a Different Collection


Delete Collection

This field is required.