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PlantFiles: Wasatch Penstemon
Penstemon cyananthus

Family: Plantaginaceae
Genus: Penstemon (PEN-stem-on) (Info)
Species: cyananthus (SY-an-an-thus) (Info)

10 members have or want this plant for trade.

Alpines and Rock Gardens

12-18 in. (30-45 cm)
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)

18-24 in. (45-60 cm)

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)

Sun Exposure:
Full Sun


Bloom Color:
Medium Blue

Bloom Time:
Mid Spring


Other details:
Drought-tolerant; suitable for xeriscaping

Soil pH requirements:
Unknown - Tell us

Patent Information:

Propagation Methods:
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse

Seed Collecting:
Unknown - Tell us

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2 positives
1 neutral
No negatives

Gardeners' Notes:

Neutral Nejacobs On Apr 21, 2013, Nejacobs from New Hempstead, NY wrote:

A couple years ago, I saw this plant in a garden in upstate NY, but was unable to find out what it was. I only gave up looking for it last month and am SO HAPPY to see that you've showcased it! Now I know what to call it (cyananthus, gosh, what else COULD IT HAVE BEEN CALLED!?) so I can look around for it on the Internet !

Positive BajaBlue On Oct 6, 2009, BajaBlue from Rancho Santa Rita, TX (Zone 8a) wrote:

A real beauty. Rich blue flowers on spikes from 1-3' above mat of green basal leaves. Sun to part shade, well-drained soil. Hardy to -20 degrees F. Northern Rocky Mountains native.

Positive nevadagdn On May 9, 2005, nevadagdn from Sparks, NV (Zone 7a) wrote:

I can't be completely certain how low the hardiness range for this plant might be, but it overwinters nicely in my Zone 7a garden. It would qualify as xeric in most areas, although I have it in rocks over sandy clay and give it additional water during the growing season here in arid Nevada.

The flowers are absolutely, undeniably, brilliantly BLUE.


This plant has been said to grow in the following regions:

Colorado Springs, Colorado
Beatrice, Nebraska
Sparks, Nevada
Riverton, Utah
Salt Lake City, Utah
Sandy, Utah
Santaquin, Utah
Vancouver, Washington

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