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PlantFiles: Large Flowered Penstemon, Shell-leaf Penstemon
Penstemon grandiflorus

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Family: Plantaginaceae
Genus: Penstemon (PEN-stem-on) (Info)
Species: grandiflorus (gran-dih-FLOR-us) (Info)

6 vendors have this plant for sale.

14 members have or want this plant for trade.

Category:
Perennials

Height:
36-48 in. (90-120 cm)

Spacing:
18-24 in. (45-60 cm)

Hardiness:
USDA Zone 3a: to -39.9 C (-40 F)
USDA Zone 3b: to -37.2 C (-35 F)
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)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:
Full Sun

Danger:
Unknown - Tell us

Bloom Color:
Violet/Lavender

Bloom Time:
Late Spring/Early Summer

Foliage:
Herbaceous

Other details:
This plant is attractive to bees, butterflies and/or birds
Average Water Needs; Water regularly; do not overwater
This plant may be considered a protected species; check before digging or gathering seeds

Soil pH requirements:
Unknown - Tell us

Patent Information:
Non-patented

Propagation Methods:
Unknown - Tell us

Seed Collecting:
Unknown - Tell us

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No details have been posted.

Regional...

This plant has been said to grow in the following regions:

Wasilla, Alaska
Stockton, California
Aurora, Colorado
Colorado Springs, Colorado
Pacific Junction, Iowa
Luverne, Minnesota
Minneapolis, Minnesota
Saint Paul, Minnesota
Denville, New Jersey
Riverton, Utah
Leesburg, Virginia



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