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

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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

Profile:

No positives
1 neutral
No negatives

Gardeners' Notes:

RatingAuthorContent
Neutral smiln32 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.



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