Penstemon Species, Graham's Penstemon, Pride of the Mountain, Uinta Basin Beardtongue

Penstemongrahamii

Genus
Penstemon (PEN-stem-on)
Species
grahamii (GRAM-ee-eye)
Synonym
Sun Exposure
Full Sun
Foliage
Herbaceous
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)
Bloom Color
Magenta (pink-purple)
Lavender
Bloom Time
Mid Spring
Other Details
Category
Perennials
Water Requirements
Drought-tolerant; suitable for xeriscaping
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)
Patent Information
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

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Gardener's Notes:

0
positive
1
neutral
0
negative
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Oklahoma City, OK (Zone 7a) | December 2004 | neutral

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 b...Read More

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