Penstemon Species, Beard Tongue, Stiffleaf Penstemon, Pride of the Mountain

Penstemonaridus

Genus
Penstemon (PEN-stem-on)
Species
aridus (AR-id-us)
Synonym
Sun Exposure
Full Sun
Foliage
Evergreen
Smooth
Height
under 6 in. (15 cm)
Spacing
12-15 in. (30-38 cm)
Hardiness
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)
Bloom Color
Medium Blue
Blue-Violet
Bloom Time
Late Spring/Early Summer
Mid Summer
Other Details
Category
Alpines and Rock Gardens
Perennials
Water Requirements
Drought-tolerant; suitable for xeriscaping
Foliage Color
Blue-Green
Where to Grow
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
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:

1
positive
0
neutral
0
negative
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St. John's, NL (Zone 5b) | January 2005 | positive

A lovely dwarf penstemon for the rock garden or alpine trough, this one produces a rosette of narrow, somewhat rubbery, blue-green leaves...Read More

Featured
Garden Jumping Spider
(Opisthoncus parcedentatus)
Lesser Goldfinch
(Spinus psaltria)
Featured
Garden Jumping Spider
(Opisthoncus parcedentatus)
Lesser Goldfinch
(Spinus psaltria)