• Photo of Penstemon australis (Penstemon australiss)

Plant Profile: Penstemon australis

Taxonomy: Penstemon australis

Names

Eustis Lake Beardtongue, Eustis Lake Penstemon, Pink Beardtongue, Sandhill Beardtongue, Slender Beardtongue, Slender penstemon, Southern Beardtongue

  • Photo of Penstemon australis (Penstemon australiss)

Phonetic Spelling:PEN-stem-on aw-STRAL-iss

Genus:Penstemon

Species:australis

Family:Plantaginaceae

A brief-lived native species found along the coastal plains stretching from Louisiana to southeastern Virginia, this plant thrives in dry pinelands, sparse upland forests, sandy hills, and uncultivated fields.

Each specimen features one or more flowering stems that emerge from a rosette of leaves. These leaves are smooth, rounded at the top with a tapered base, and have serrated edges. The leaves on the upper stem (known as cauline leaves) are lanceolate, tapering at both ends and exhibiting lightly toothed edges.

The flowers are tubular and have a two-lipped structure, with the upper lip divided into two lobes and the lower into three. The blossoms display a pink to rose-purple hue on the exterior, while the interior is white adorned with dark purple streaks. A staminode, which is a non-functional stamen, extends from the flower, resembling a tongue protruding from an open mouth, which is how it earned the nickname 'beard tongue.'

This plant is relatively easy to cultivate in sandy, low-nutrient, well-drained soil, thriving in full sun to partial shade. It is an excellent choice for native pollinator gardens or rock gardens.

Insects, diseases, and other plant issues: It is a short-lived perennial.

For further details on Penstemon, additional information is available.

Penstemon australis Feature Summary

Penstemon australis Image Gallery

Tags

#hummingbirds
#showy flowers
#drought tolerant
#wildlife plant
#native perennial
#nectar plant
#specialized bees
#native garden
#rock gardens
#borders
#pollinator plant
#native wildflower
#food source summer
#food source herbage
#food source nectar
#food source pollen
#bird friendly
#food source hard mast fruit
#mammals
#butterfly larvae
#Piedmont Mountains FACU
#Coastal FACU
#pollinators
#bee friendly
#audubon

Similar Plants

Penstemon australis Feature Summary

Attributes
Members of the genus Penstemon support the following specialized bee: Osmia (Melanosmia) distincta. Attracts bees and humming birds.
Perennial
Attracts Pollinators
Fruit
Capsule containing several seeds July to August.
Brown/Copper
Flowers
The 1-inch flowers are deep rose in color on the outside and white on the inside. Clusters of flowers occur on multiple terminal stems. Flowers bloom from May to July.
Pink
White
Green
Spring
Summer
4-5 petals/rays
Tubular
Lipped
< 1 inch
Leaves
Basal rosette of oblanceolate to obovate leaves 2-4 inches long and .5 to 1 inch wide. Stem leaves are often edged in red, serrated, clasping and lanceolate. 2-4 inches long. Surface with short hairs.
Green
Red/Burgundy
Opposite
Rosulate
Lanceolate
Obovate
Oblanceolate
3-6 inches
1-3 inches
Stem
Single stemmed. Not branched above the base.
Hairy (pubescent)
Straight
Whole Plant Traits
Perennial
Native Plant
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)
Good Drainage
Occasionally Dry
Very Dry
Coastal
Piedmont
5b
5a
6a
6b
7a
7b
8b
8a
9a
9b
Loam (Silt)
Sand
Shallow Rocky
Landscape
Butterfly Garden
Pollinator Garden
Native Garden
Dry Soil
Poor Soil
Butterflies
Pollinators
Small Mammals
Specialized Bees
Hummingbirds

Penstemon australis Attributes

Penstemon australis: Country Or Region Of Origin

SE USA

Penstemon australis: Wildlife Value

Members of the genus Penstemon support the following specialized bee: Osmia (Melanosmia) distincta. Attracts bees and humming birds.

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

Heat and drought tolerant.

Penstemon australis: Life Cycle

Annual
Biennial
Bulb
Perennial
Woody

Penstemon australis: Recommended Propagation Strategy

Division
Grafting
Layering
Leaf Cutting
Root Cutting
Seed
Stem Cutting

Penstemon australis: 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 australis Fruit

Penstemon australis: Fruit Description

Capsule containing several seeds July to August.

Penstemon australis: Fruit Type

Achene
Aggregate
Berry
Capsule
Caryopsis
Drupe
Follicle
Legume
Nut
Pome
Samara
Schizocarp
Siliqua

Penstemon australis: Fruit Color

grass
Brown/Copper

Penstemon australis: Display/Harvest Time

Fall
Spring
Summer
Winter

Penstemon australis Flowers

Penstemon australis: Flower Description

The 1-inch flowers are deep rose in color on the outside and white on the inside. Clusters of flowers occur on multiple terminal stems. Flowers bloom from May to July.

Penstemon australis: Flower Color

filter_vintage
Green
filter_vintage
Pink
filter_vintage
White

Penstemon australis: Flower Inflorescence

Catkin
Corymb
Cyme
Head
Insignificant
Panicle
Raceme
Solitary
Spadix
Spike
Umbel

Penstemon australis: Flower Value To Gardener

Edible
Fragrant
Good Cut
Good Dried
Long Bloom Season
Long-lasting
Showy

Penstemon australis: Flower Bloom Time

Winter
Spring
Summer
Fall

Penstemon australis: Flower Petals

2-3 rays/petals
4-5 petals/rays
6 petals/rays
7 - 20 petals/rays
asymmetrical petals
Bracts
Colored Sepals
fused petals
more than 20 petals/rays
Tepals

Penstemon australis: Flower Shape

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

Penstemon australis: Flower Size

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

Penstemon australis Leaves

Penstemon australis: Leaf Description

Basal rosette of oblanceolate to obovate leaves 2-4 inches long and .5 to 1 inch wide. Stem leaves are often edged in red, serrated, clasping and lanceolate. 2-4 inches long. Surface with short hairs.

Penstemon australis: Leaf Color

spa
Green
spa
Red/Burgundy

Penstemon australis: Leaf Type

Compound (Pinnately , Bipinnately, Palmately)
Fronds
Needles
Sheath
Simple

Penstemon australis: Leaf Arrangement

Alternate
Opposite
Other/more complex
Rosulate
Whorled

Penstemon australis: 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 australis: Leaf Margin

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

Penstemon australis: Hairs Present

No
Yes

Penstemon australis: Leaf Length

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

Penstemon australis: Leaf Width

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

Penstemon australis Stem

Penstemon australis: Stem Description

Single stemmed. Not branched above the base.

Penstemon australis: Stem Color

grass
Green

Penstemon australis: Stem Is Aromatic

No
Yes

Penstemon australis: Stem Surface

Corky Ridges
Covered with a powdery bloom (glaucous)
Dull
Hairy (pubescent)
Polished
Smooth (glabrous)

Penstemon australis: Stem Form

Straight
Zig Zags

Penstemon australis Whole Plant Traits

Penstemon australis: 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 australis: Habit/Form

Arching
Ascending
Broad
Cascading
Climbing
Clumping
Columnar
Conical
Creeping
Dense
Erect
Horizontal
Irregular
Mounding
Multi-stemmed
Multi-trunked
Open
Oval
Prostrate
Pyramidal
Rounded
Spreading
Vase
Weeping

Penstemon australis: Growth Rate

Slow
Medium
Rapid

Penstemon australis: Maintenance

Low
Medium
High

Penstemon australis Cultural Conditions

Penstemon australis: 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 australis: Soil Drainage

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

Penstemon australis: NC Region

Coastal
Mountains
Piedmont

Penstemon australis: USDA Plant Hardiness Zone

thermostat
5a
thermostat
5b
thermostat
6a
thermostat
6b
thermostat
7a
thermostat
7b
thermostat
8a
thermostat
8b
thermostat
9a
thermostat
9b

Penstemon australis: Soil Texture

Clay
High Organic Matter
Loam (Silt)
Sand
Shallow Rocky

Penstemon australis Landscape

Penstemon australis: 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 australis: Design Feature

Accent
Barrier
Border
Flowering Tree
Foundation Planting
Hedge
Mass Planting
Screen/Privacy
Security
Shade Tree
Small groups
Small Tree
Specimen
Street Tree
Understory Tree

Penstemon australis: 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 australis: 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 australis: Attracts

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