We want to hear from you! Please take this short, anonymous survey to help us improve the DG home page.

Beardtongue, Beard Tongue, Penstemon 'Sunburst Ruby'

Penstemon x mexicali

Family: Plantaginaceae
Genus: Penstemon (PEN-stem-on) (Info)
Species: x mexicali (meks-ih-KAL-ee) (Info)
Cultivar: Sunburst Ruby


Alpines and Rock Gardens


Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Flowers are good for cutting

This plant is attractive to bees, butterflies and/or birds

Water Requirements:

Drought-tolerant; suitable for xeriscaping

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us


12-18 in. (30-45 cm)


6-9 in. (15-22 cm)

9-12 in. (22-30 cm)


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)

Sun Exposure:

Full Sun

Sun to Partial Shade


Unknown - Tell us

Bloom Color:

Fuchsia (Red-Purple)


Bloom Time:

Late Spring/Early Summer

Mid Summer



Other details:

Unknown - Tell us

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Unknown - Tell us

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; sow indoors before last frost

Seed Collecting:

Unknown - Tell us


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

Minneapolis, Minnesota

Norristown, Pennsylvania

Leesburg, Virginia

Freeland, Washington

Kalama, Washington

Gardeners' Notes:


On Sep 3, 2011, mehitabel45 from Whidbey Island, WA (Zone 8b) wrote:

What a pleasant surprise!
I planted a small pot of this last fall, just before an 18 degree freeze. It died back, but this summer, it came back beautifully. Perhaps 12"-15" in diameter, and about 18" tall, it bloomed from June through August, and is just slowing down now.
Everyone should have this very lovely deep pink color in their garden.

Update: It's her third summer, and she's 2.5 feet wide. Ignore the spacing above. Still a stunning plant. Blooms until late fall if pruned and happy. It would make a nice low hedge in 3 year's time. Mine's about 2.5 feet tall, too.


On Jun 5, 2010, Malus2006 from Coon Rapids, MN (Zone 4a) wrote:

Didn't last past its first winter - could be not enough sun or too much moisture.