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Smooth Penstemon
Penstemon digitalis

a.k.a. Beardtongue

Foxglove Beardtongue can be found in meadows, prairies, savannas, and woodland edges. Preferring medium soils and tolerant of a range of sun conditions, it is easy to grow from seed. Its tubular flowers attract a variety of long-tongued bees.

USDA symbol: PEDI

General Information

Plant TypeForb
Height1 to 2 feet
Light ExposureSun, Part Sun
Soil MoistureDry
Bloom ColorWhite
Smooth Penstemon (Smooth Penstemon<div><em class="small">Penstemon digitalis</em></div>)
Photo credit: United States Department of Agriculture (Click to enlarge)


Flooding / Inundation ToleranceModerate
General Resilience7
Salt ToleranceMedium
Stress ToleranceDrought Tolerant

Pollinator Value: Very High

Bloom MonthsJune to July
Larval Host ofBees
Specific Pollinators HostedOsmia cyaneonitens, Osmia distincta
Pollinator BenefitInsect Pollinated, Provides Nectar, Supports Generalists

Project Planning

Project TypeShoreline Buffer
Coefficient of Conservatism4
Herbivore SensitivityMedium
Rate of SpreadSlow
Soil StabilizationShallow
Vegetative ReproductionClonal


CountyHennepin, Houston, Mille Lacs, Pine, Washington
EcoregionDriftless Area, North Central Hardwood Forests, Northern Lakes and Forests, Western Cornbelt Plains
Approximate Eco ProvinceEastern Broadleaf Forest, Laurentian Mixed Forest, Prairie Parkland