Penstemon Species, Cardwell's Penstemon, Pride of the Mountain

Penstemoncardwellii

Genus
Penstemon (PEN-stem-on)
Species
cardwellii (card-WELL-ee-eye)
Synonym
Sun Exposure
Sun to Partial Shade
Foliage
Herbaceous
Height
6-12 in. (15-30 cm)
Spacing
12-15 in. (30-38 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)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
Bloom Color
Rose/Mauve
Blue-Violet
Bloom Time
Late Spring/Early Summer
Other Details
Category
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
Patent Information
Non-patented
Propagation Methods
From woody 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 is said to grow outdoors in the following regions:

MOUNT HOOD PARKDALE, Oregon

Monmouth, Oregon

Portland, Oregon

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Gardener's Notes:

2
positives
0
neutral
0
negative
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C
Portland, OR | December 2011 | positive

This is a native in the Pacific Northwest, it has done well in a predominantly dry bed under a native Garry oak and beside other PNW nati...Read More

T
St. John's, NL (Zone 5b) | January 2005 | positive

Another member of the Dasanthera Section, this one is relatively easy to accomodate. It can take a fair amount of drought but performs b...Read More

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