• Photo of Penstemon laevigatus (Penstemon laevigatuss)

Plant Profile: Penstemon laevigatus

Taxonomy: Penstemon laevigatus

Names

Eastern Beardtongue, Eastern Smooth Beardtongue, Smooth Beardtongue

  • Photo of Penstemon laevigatus (Penstemon laevigatuss)

Phonetic Spelling:PEN-stem-on lee-vih-GAY-tus

Genus:Penstemon

Species:laevigatus

Family:Plantaginaceae

Eastern smooth beardtongue, a native species of North Carolina belonging to the Scrophulariaceae family, is a herbaceous perennial that typically reaches heights of 2 to 3 feet. Its leaves are arranged oppositely, featuring a slightly serrated edge and a hairy underside. The lower leaves are characterized by long stems, while the upper leaves have shorter stems. This plant thrives in woodlands and open fields, favoring rich, moist soils and full sunlight. The lance-shaped leaves measure between 2 to 4 inches in length and are stalkless. From May to July, it produces clusters of purplish-white flowers at the upper sections of its stems. These blooms are tubular and asymmetrical, with a hairy lower lip, which is the origin of its common name, beardtongue. Known for its ease of cultivation, this plant requires moderate watering and minimal maintenance, making it an ideal choice for rock gardens, butterfly gardens, or cottage gardens.

In 2002, this plant was honored as the NC Wildflower of the Year, a recognition facilitated by the North Carolina Botanical Garden with support from the Garden Club of North Carolina.

Fire Risk: This plant has a medium flammability rating.

Seasons of Interest:
- Bloom: Spring-Summer, May-July
- Fruit/Seed/Nut: Late summer

For additional details on Penstemon, please refer to further resources.

Penstemon laevigatus Feature Summary

Penstemon laevigatus Image Gallery

Tags

#hummingbirds
#showy flowers
#perennial
#wildlife plant
#nectar plant
#cottage garden
#herb garden
#highly beneficial coastal plants
#fire
#medium flammability
#NC native
#native garden
#rock gardens
#native wildflower
#wildflower garden
#larval host plant
#food source summer
#food source herbage
#food source nectar
#food source pollen
#coastal FAC
#bird friendly
#nectar plant late spring
#food source hard mast fruit
#butterfly friendly
#nectar plant early summer
#butterfly larvae
#Piedmont Mountains FACU
#pollinators
#pollinator garden
#bee friendly
#audubon
#common buckeye butterfly
#NC Wildflower of the Year

Similar Plants

Penstemon laevigatus Feature Summary

Attributes
Eastern United States
This plant provides nectar for pollinators. Common Buckeye (Junonia coenia) larvae which has two to three broods from May-October. Caterpillars eat the host plant's leaves while adults feed on the nectar of composite flowers including aster, chicory, gumweed, knapweed, and tickseed sunflower. Bees, butterflies, and hummingbirds are attracted to its blooms.
This plant is moderately resistant to damage from deer.
Perennial
Wildlife Food Source
medium flammability
Fruit
Flowers bloom from July to August.
Flowers
The Smooth Beardtongue has pale purple to almost white flowers. Flowers bloom from May to July.
Purple/Lavender
White
Spring
Summer
Leaves
The leaves of the Smooth Beardtongue are opposite with a slightly toothed margin and a hairy underside. The lower leaves are long-stemmed while the upper ones have short stems.
Lanceolate
3-6 inches
Velvety
Whole Plant Traits
Perennial
Native Plant
Wildflower
Herb
Cultural Conditions
Full sun (6 or more hours of direct sunlight a day)
Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Deep shade (Less than 2 hours to no direct sunlight)
Good Drainage
Moist
Occasionally Dry
Coastal
Mountains
Piedmont
High Organic Matter
Landscape
Rock Garden
Butterfly Garden
Pollinator Garden
Cottage Garden
Native Garden
Woodland
Meadow
Butterflies
Pollinators
Songbirds
Bees
Hummingbirds

Penstemon laevigatus Attributes

Penstemon laevigatus: Country Or Region Of Origin

Eastern United States

Penstemon laevigatus: Wildlife Value

This plant provides nectar for pollinators. Common Buckeye (Junonia coenia) larvae which has two to three broods from May-October. Caterpillars eat the host plant's leaves while adults feed on the nectar of composite flowers including aster, chicory, gumweed, knapweed, and tickseed sunflower. Bees, butterflies, and hummingbirds are attracted to its blooms.

Penstemon laevigatus: Particularly Resistant To (Insects/Diseases/Other Problems)

This plant is moderately resistant to damage from deer.

Penstemon laevigatus: Life Cycle

Annual
Biennial
Bulb
Perennial
Woody

Penstemon laevigatus: Recommended Propagation Strategy

Division
Grafting
Layering
Leaf Cutting
Root Cutting
Seed
Stem Cutting

Penstemon laevigatus: Play Value

Attractive Flowers
Attracts Pollinators
Buffer
Colorful
Defines Paths
Easy to Grow
Edible fruit
Fragrance
Pieces Used in Games
Screening
Shade
Sound
Textural
Wildlife Cover/Habitat
Wildlife Food Source
Wildlife Larval Host
Wildlife Nesting
Wind Break
Wind Shimmer

Penstemon laevigatus: Fire Risk Rating

extreme flammability
high flammability
low flammability
medium flammability

Penstemon laevigatus Fruit

Penstemon laevigatus: Fruit Description

Flowers bloom from July to August.

Penstemon laevigatus: Display/Harvest Time

Fall
Spring
Summer
Winter

Penstemon laevigatus Flowers

Penstemon laevigatus: Flower Description

The Smooth Beardtongue has pale purple to almost white flowers. Flowers bloom from May to July.

Penstemon laevigatus: Flower Color

filter_vintage
Purple/Lavender
filter_vintage
White

Penstemon laevigatus: Flower Bloom Time

Winter
Spring
Summer
Fall

Penstemon laevigatus: Flower Shape

Bell
Cross
Crown
Cup
Dome
Funnel
Irregular
Lipped
Radial
Saucer
Star
Trumpet
Tubular
Urn
Wheel

Penstemon laevigatus Leaves

Penstemon laevigatus: Leaf Description

The leaves of the Smooth Beardtongue are opposite with a slightly toothed margin and a hairy underside. The lower leaves are long-stemmed while the upper ones have short stems.

Penstemon laevigatus: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Penstemon laevigatus: Leaf Color

spa
Green

Penstemon laevigatus: Leaf Arrangement

Alternate
Opposite
Other/more complex
Rosulate
Whorled

Penstemon laevigatus: Leaf Shape

Acicular
Auriculate
Cordate
Cuneate
Deltoid
Elliptical
Filiform
Lanceolate
Linear
Oblanceolate
Oblong
Obovate
Obtuse
Orbicular
Ovate
Palmasect
Palmatifid
Peltate
Pinnatifid
Pinnatisect
Reniform
Rhomboidal
Spatulate
Subcordate
Subulate

Penstemon laevigatus: Leaf Margin

Crenate
Crenulate
Dentate
Denticulate
Doubly Crenate
Doubly Dentate
Doubly Serrate
Entire
Lobed
Serrate
Sinuate
Undulate

Penstemon laevigatus: Hairs Present

No
Yes

Penstemon laevigatus: Leaf Length

< 1 inch
1-3 inches
3-6 inches
> 6 inches

Penstemon laevigatus: Leaf Feel

Fleshy
Glossy
Leathery
Papery
Prickly
Rough
Rubbery
Slippery
Smooth
Soft
Velvety
Waxy

Penstemon laevigatus Whole Plant Traits

Penstemon laevigatus: Plant Type

Annual
Bulb
Carnivorous
Edible
Epiphyte
Fern
Ground Cover
Herb
Herbaceous Perennial
Houseplant
Mushroom
Native Plant
Ornamental Grasses and Sedges
Perennial
Poisonous
Rose
Shrub
Succulent
Tree
Turfgrass
Vegetable
Vine
Water Plant
Weed
Wildflower

Penstemon laevigatus: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Penstemon laevigatus Cultural Conditions

Penstemon laevigatus: Light

Dappled Sunlight (Shade through upper canopy all day)
Deep shade (Less than 2 hours to no direct sunlight)
Full sun (6 or more hours of direct sunlight a day)
Partial Shade (Direct sunlight only part of the day, 2-6 hours)

Penstemon laevigatus: Soil Drainage

Frequent Standing Water
Good Drainage
Moist
Occasional Flooding
Occasionally Dry
Occasionally Wet
Very Dry

Penstemon laevigatus: NC Region

Coastal
Mountains
Piedmont

Penstemon laevigatus: USDA Plant Hardiness Zone

thermostat
6a
thermostat
6b
thermostat
7a
thermostat
7b
thermostat
8a
thermostat
8b

Penstemon laevigatus: Soil Texture

Clay
High Organic Matter
Loam (Silt)
Sand
Shallow Rocky

Penstemon laevigatus Stem

Penstemon laevigatus: Stem Is Aromatic

No
Yes

Penstemon laevigatus Landscape

Penstemon laevigatus: Landscape Theme

Asian Garden
Butterfly Garden
Children's Garden
Cottage Garden
Cutting Garden
Drought Tolerant Garden
Edible Garden
English Garden
Fairy Garden
Garden for the Blind
Native Garden
Nighttime Garden
Pollinator Garden
Rain Garden
Rock Garden
Shade Garden
Water Garden
Winter Garden

Penstemon laevigatus: Resistance To Challenges

Black Walnut
Compaction
Deer
Diseases
Drought
Dry Soil
Erosion
Fire
Foot Traffic
Heat
Heavy Shade
Humidity
Insect Pests
Pollution
Poor Soil
Rabbits
Salt
Slugs
Squirrels
Storm damage
Urban Conditions
Voles
Wet Soil
Wind

Penstemon laevigatus: Landscape Location

Coastal
Container
Hanging Baskets
Houseplants
Lawn
Meadow
Naturalized Area
Near Septic
Patio
Pond
Pool/Hardscape
Recreational Play Area
Riparian
Rock Wall
Slope/Bank
Small Space
Vertical Spaces
Walkways
Woodland

Penstemon laevigatus: Attracts

Bats
Bees
Butterflies
Frogs
Hummingbirds
Moths
Pollinators
Predatory Insects
Reptiles
Small Mammals
Songbirds
Specialized Bees