Penstemon Species, Beard Tongue, Rocky Mountain Penstemon, Pride of the Mountain

Penstemon strictus

Genus
Penstemon (PEN-stem-on)
Species
strictus (STRIK-tus)
Synonym
Penstemon strictus subsp. angustus
Sun Exposure
Full Sun
Foliage
Evergreen
Smooth
Height
24-36 in. (60-90 cm)
Spacing
18-24 in. (45-60 cm)
Hardiness
USDA Zone 3a: to -39.9 °C (-40 °F)
USDA Zone 3b: to -37.2 °C (-35 °F)
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
Bloom Color
Blue-Violet
Bloom Time
Late Spring/Early Summer
Other Details
Category
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)
Patent Information
Non-patented
Propagation Methods
From herbaceous stem cuttings
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; stratify if sowing indoors
Seed Collecting
Allow pods to dry on plant; break open to collect seeds
Properly cleaned, seed can be successfully stored
Regional

This plant is said to grow outdoors in the following regions:

Knik-Fairview, Alaska

Lakes, Alaska

Meadow Lakes, Alaska

Tanaina, Alaska

Wasilla, Alaska

Buckeye, Arizona

Colorado Springs, Colorado

Denver, Colorado(2 reports)

Hotchkiss, Colorado

Kiowa, Colorado

Parker, Colorado

Itasca, Illinois

Indianapolis, Indiana

Ottawa, Kansas

Constantine, Michigan

Helena, Montana

Carson City, Nevada

Pahrump, Nevada

Albuquerque, New Mexico

Farmington, New Mexico

Las Cruces, New Mexico

Rodeo, New Mexico

Elba, New York

Pottersville, New York

Elizabeth City, North Carolina

Coos Bay, Oregon

MOUNT HOOD PARKDALE, Oregon

Allentown, Pennsylvania

Austin, Texas

Gilmer, Texas

Lewisville, Texas

Wichita Falls, Texas

Magna, Utah

Ogden, Utah

Riverton, Utah

Salt Lake City, Utah

Santaquin, Utah

Essex Junction, Vermont

Leesburg, Virginia

Kalama, Washington

Bayfield, Wisconsin

Kinnear, Wyoming

Riverton, Wyoming

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Gardener's Notes:

4
positives
0
neutral
0
negative
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W
Magna, UT (Zone 7a) | June 2023 | positive

I have read that this Penstemon and maybe even all Penstemon are short lived. I have had one original plant for 10-12 years I seem to th...Read More

T
Leesburg, FL (Zone 9b) | October 2013 | positive

Grew this Penstemon by seed in Jan of 2011. Took a long time to germinate, but well worth the wait.

The plant quickly gr...Read More

M
Gilmer, TX (Zone 8b) | May 2010 | positive

I ordered three of these from Bluestone and have been happy with their performance. The first year, I got only foliage, but all appeared...Read More

L
Ogden, UT (Zone 5b) | January 2005 | positive

Rocky Mountain penstemon is very striking with its deep violet-blue flowers on tall stems. It's one of the easiest penstemons to grow, a...Read More

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