Graham's Beardtongue, Graham's Penstemon, Uinta Basin Beardtongue
Penstemon grahamii

Family: Plantaginaceae
Genus: Penstemon (PEN-stem-on) (Info)
Species: grahamii (GRAM-ee-eye) (Info)

Category:

Perennials

Height:

under 6 in. (15 cm)

6-12 in. (15-30 cm)

Spacing:

3-6 in. (7-15 cm)

6-9 in. (15-22 cm)

Hardiness:

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

Danger:

Unknown - Tell us

Bloom Color:

Magenta (Pink-Purple)

Violet/Lavender

Bloom Time:

Mid Spring

Foliage:

Herbaceous

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:

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; stratify if sowing indoors

Seed Collecting:

Allow pods to dry on plant; break open to collect seeds

Gardeners' Notes:

0
positives
1
neutral
0
negatives
RatingContent
Neutral

On Dec 7, 2004, smiln32 from Oklahoma City, OK (Zone 7a) wrote:

This plant is native to the U.S. and is a Federal candidate for listing as threatened or endangered. It has thick leathery leaves, and beautiful light to deep lavender flowers that bloom from late May to early June.