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Loughmiller, Campbell and Lynn
Penstemon grandiflorus Nutt.
Large beardtongue, Large-flower beardtongue, Large-flowered penstemon
Synonyms: Penstemon bradburii
USDA Symbol: pegr7
USDA Native Status: Native to U.S.
Large, lavender, horizontally arranged, tubular flowers on a smooth stem above opposite, blue-green, clasping leaves and in axils of similar leafy bracts. This perennialís stout, unbranched stems, 2-3 ft. tall, bear opposite, blue-green, waxy leaves and pink to bluish-lavender, tubular flowers. The large flowers extend horizontally on short stalks from the axils of leafy bracts near top of stem.
This handsome plant is especially spectacular when growing in masses. It occasionally escapes from cultivation in the East. At least 15 species of Penstemon occur in eastern North America, and there are many more in the West.
Plant CharacteristicsDuration: Perennial Habit: Herb Flower:
Fruit: Size Class:
Bloom InformationBloom Color: Pink , Purple
Bloom Time: May , Jun
CO , CT , IA , IL , IN , KS , MA , MN , MO , MT , ND , NE , OH , OK , SD , TX , WI , WY Native Distribution:
IL to ND & s.e. MT, s. to c. TX Native Habitat:
Dry prairies USDA Native Status: L48(N)
Growing ConditionsLight Requirement: Sun
Soil Description: Sandy soils.
Conditions Comments: Not Available
PropagationDescription: Propagate by seed.
Seed Collection: Not Available
Seed Treatment: Germination is best with cold-moist stratification.
Commercially Avail: yes
From the National Suppliers Directory
According to the inventory provided by Associate Suppliers, this plant is available at the following locations:
- Westfield, WI
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is either on display or available from the following:
Tohono Chul Park, Inc.
- Tucson, AZNative Seed Network
- Corvallis, OR
Recommended Species Lists
Find native plant species by state. Each list contains commercially available species suitable for gardens and planned landscapes. Once you have selected a collection, you can browse the collection or search within it using the combination search.
View Recommended Species page
Record Modified: 2012-10-03
Research By: TWC Staff