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Rock Penstemon, Shrubby Penstemon
Penstemon baccharifolius

Family: Plantaginaceae
Genus: Penstemon (PEN-stem-on) (Info)
Species: baccharifolius (bak-uh-rih-FOH-lee-us) (Info)

Category:

Shrubs

Height:

18-24 in. (45-60 cm)

Spacing:

9-12 in. (22-30 cm)

Hardiness:

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)

USDA Zone 10a: to -1.1 C (30 F)

USDA Zone 10b: to 1.7 C (35 F)

Sun Exposure:

Full Sun

Sun to Partial Shade

Danger:

Unknown - Tell us

Bloom Color:

Red

Scarlet (Dark Red)

Bloom Time:

Mid Summer

Late Summer/Early Fall

Foliage:

Herbaceous

Velvet/Fuzzy-Textured

Other details:

Drought-tolerant; suitable for xeriscaping

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

Regional

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

Chandler, Arizona

Mesa, Arizona

Tucson, Arizona

Arlington, Texas (2 reports)

Austin, Texas

Crawford, Texas

El Paso, Texas

Helotes, Texas

Uvalde, Texas

show all

Gardeners' Notes:

2
positives
0
neutrals
0
negatives
RatingContent
Positive

On Mar 8, 2007, LindaTX8 from NE Medina Co., TX (Zone 8a) wrote:

I first saw this plant growing out of what seemed to be solid rock on a steep road-cut beside a highway. Blooming away in the heat and dryness of summer. Lovely! Later I discovered you can actually buy this plant at certain nurseries! I love it!

Positive

On Jun 1, 2006, frostweed from Josephine, Arlington, TX (Zone 8a) wrote:

Rock Penstemon is a Texas Endemic perennial plant, that will bloom in full sun or part shade,