Photo by Melody

PlantFiles: Upright Blue Beardtongue
Penstemon virgatus 'Blue Buckle'

Family: Plantaginaceae
Genus: Penstemon (PEN-stem-on) (Info)
Species: virgatus (vir-GA-tus) (Info)
Cultivar: Blue Buckle

One vendor has this plant for sale.

2 members have or want this plant for trade.

Alpines and Rock Gardens

6-12 in. (15-30 cm)

12-15 in. (30-38 cm)
15-18 in. (38-45 cm)

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)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:
Full Sun


Bloom Color:

Bloom Time:
Mid Summer
Late Summer/Early Fall


Other details:
This plant is attractive to bees, butterflies and/or birds
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Flowers are good for cutting
Suitable for growing in containers

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)

Patent Information:
Unknown - Tell us

Propagation Methods:
By dividing the rootball
From herbaceous stem cuttings
From semi-hardwood cuttings

Seed Collecting:
Unknown - Tell us

Click thumbnail
to view:

By LilyLover_UT
Thumbnail #1 of Penstemon virgatus by LilyLover_UT

By ngam
Thumbnail #2 of Penstemon virgatus by ngam


1 positive
No neutrals
No negatives

Gardeners' Notes:

Positive PlantNutPeg On Aug 19, 2012, PlantNutPeg from Casas Adobes, AZ wrote:

I started P. virgatus from seed. It has been doing well in a pot. As it matures, I will eventually put it in the ground. However, seeing the other places where it does well, I don't think I will plant it in full sun. The Tucson sun will be too harsh for it, I think. It's been thriving in filtered shade all summer.


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

Wasilla, Alaska
Flagstaff, Arizona
Tucson, Arizona
Denver, Colorado
Hebron, Kentucky
Dracut, Massachusetts
Norton, Massachusetts
Geneva, Ohio
Kalama, Washington
Leavenworth, Washington
Vancouver, Washington

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