• Photo of Baptisia australis (Baptisia australiss)

Plant Profile: Baptisia australis

Taxonomy: Baptisia australis

Names

Blue False Indigo, Blue Wild Indigo, False Indigo, Wild Indigo

  • Photo of Baptisia australis (Baptisia australiss)

Phonetic Spelling:bap-TEE-zee-uh aw-STRAL-iss

Genus:Baptisia

Species:australis

Family:Fabaceae

Blue False Indigo is a perennial herb native to the bean family, typically found in forested areas or along woodland edges. This plant reaches heights of 3 to 5 feet and showcases vibrant blue flowers that are a standout feature in spring. It thrives in full sun to partial shade, although it may become leggy and droop if grown in too much shade. Blue False Indigo forms tall clumps that look particularly appealing when placed next to wooden fences. The striking indigo flowers create a beautiful contrast when paired with yellow or white flowering perennials.

For those seeking a rounded shape without the need for additional support and wishing to prevent seed pod formation, pruning the leaves after flowering but before the seed pods develop is advisable. The most effective way to propagate this plant is by collecting seeds in late summer once they are fully mature and sowing them directly in the desired location, though it may take several years for them to bloom. Alternatively, cuttings taken in April or May can root easily if harvested while the growth is still tender.

This plant was honored as the 1992 NC Wildflower of the Year, a recognition managed by the North Carolina Botanical Garden with support from the Garden Club of North Carolina.

Another option to consider is B. tinctoria, a yellow-flowered species of Baptisia that is also native to the eastern United States and flourishes in warm, sunny gardens.

Fire Risk: This plant has a medium flammability rating.

Seasons of Interest:
- Blooms: Spring
- Nut/Fruit/Seed: Late summer

In terms of pests and diseases, Blue False Indigo is generally resilient, facing no significant issues. However, if the plants grow tall in partial shade, providing support may be beneficial.

For more information on Baptisia, please refer to additional resources.

Baptisia australis Feature Summary

Baptisia australis Image Gallery

Tags

#showy flowers
#full sun tolerant
#drought tolerant
#wildlife plant
#native perennial
#blue flowers
#salt tolerant
#cottage garden
#rabbit resistant
#erosion control
#showy fruits
#NC native
#dye plant
#deer resistant
#Hoary edge
#Frosted elfin
#long lifespan
#dried arrangements
#poor soils tolerant
#larval host plant
#NC Native Pollinator Plant
#dried fruits
#Wild Indigo Duskywing
#rocky soils tolerant
#clay soils tolerant
#dry soils tolerant
#butterfly friendly
#partial shade tolerant
#HS302
#woodlands
#shallow soil tolerant
#blue dye
#eastern tailed-blue butterfly
#clouded sulphur butterfly
#orange sulphur butterfly
#stormwater demo garden orange co
#NC Wildflower of the Year

Similar Plants

Baptisia australis Feature Summary

Attributes
Uses by indigenous people included rattles (from the ripened seed pods) for children and blue dye. The beautiful blue flowers have been used to make a blue dye nearly comparable to dye made from the flowers of indigo.
Central & Eastern U.S.A
PA south to NC and TN
Its flowers are attractive to butterflies, bees, and other insects. This plant is also a larval host plant for a variety of butterflies including: Orange sulphur, Clouded Sulphur, Frosted Elfin, Eastern Tailed Blue, Hoary Edge, and Wild Indigo Duskywing.
Drought, salt, poor soil, rabbit, erosion, dry soil, clay soil, shallow-rocky soil, highly resistant to deer damage
Perennial
medium flammability
Fruit
Inflated seed pods filled with many seeds appear after bloom. They ripen when they are very black and up to 2.5 inches long in late summer. People enjoy the seed pods' appearance for ornamental interest or even dried flower arrangments (when the seed pod is with the stem).
1-3 inches
1-3 inches
Flowers
On spikes and arranged on 16-inches-tall racemes, flowers are generally purple/blue (about .75-in.). Plant it in full sun to part shade but in the shade tends to get leggy and droop over.  It forms tall clumps which are especially attractive planted next to wooden fences. The bright, indigo blue flowers are attractive when combined with yellow or white flowering perennials.  Flowers are either on long-stalked clusters above the leaves or axillary. They bloom in late spring (sometimes around early summer) in white, blue, purple/blue, or yellow and are irregular and pea-shaped.
Purple/Lavender
White
Gold/Yellow
Blue
Insignificant
Spike
Corymb
Showy
Long Bloom Season
Leaves
Trifoliate leaves look similar to clovers but are blue/green: these leaflets can be as long as 2 inches and have smooth edges. The alternate leaves have a smooth margin (entire). This perennial herb has 3-parted leaves, turning black upon drying.
Green
Blue
Compound (Pinnately , Bipinnately, Palmately)
Subulate
< 1 inch
Smooth
Slippery
Stem
Stems with seed pods are valued additions to dried flower arrangements.
Smooth/Hairless
Poisonous to Humans
THIS PLANT CAUSES ONLY LOW TOXICITY IF EATEN. Poisonous through ingestion. All parts are poisonous. Symptoms: Nausea, vomiting, diarrhea
Baptisin and cytisine
Seeds
Leaves
Stems
Sap/Juice
Flowers
Bark
Fruits
Roots
Whole Plant Traits
Perennial
Native Plant
Cultural Conditions
Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Dappled Sunlight (Shade through upper canopy all day)
Acid (<6.0)
Good Drainage
Occasionally Wet
Frequent Standing Water
3 feet-6 feet
12 inches-3 feet
Coastal
Mountains
Piedmont
Landscape
Butterfly Garden
Children's Garden
Rain Garden
Native Garden
Water Garden
Fairy Garden
Hedge
Mass Planting
Accent
Drought
Deer
Insect Pests
Rabbits
Dry Soil
Diseases
Erosion
Fire
Poor Soil
Woodland
Houseplants
Vertical Spaces
Butterflies
Pollinators
Bees
Hummingbirds
Problem for Cats
Weedy
Problem for Children
Allelopathic

Baptisia australis Attributes

Baptisia australis: Uses (Ethnobotany)

Uses by indigenous people included rattles (from the ripened seed pods) for children and blue dye. The beautiful blue flowers have been used to make a blue dye nearly comparable to dye made from the flowers of indigo.

Baptisia australis: Country Or Region Of Origin

Central & Eastern U.S.A

Baptisia australis: Distribution

PA south to NC and TN

Baptisia australis: Wildlife Value

Its flowers are attractive to butterflies, bees, and other insects. This plant is also a larval host plant for a variety of butterflies including: Orange sulphur, Clouded Sulphur, Frosted Elfin, Eastern Tailed Blue, Hoary Edge, and Wild Indigo Duskywing.

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

Drought, salt, poor soil, rabbit, erosion, dry soil, clay soil, shallow-rocky soil, highly resistant to deer damage

Baptisia australis: Life Cycle

Annual
Biennial
Bulb
Perennial
Woody

Baptisia australis: Recommended Propagation Strategy

Division
Grafting
Layering
Leaf Cutting
Root Cutting
Seed
Stem Cutting

Baptisia 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

Baptisia australis: Fire Risk Rating

extreme flammability
high flammability
low flammability
medium flammability

Baptisia australis Fruit

Baptisia australis: Fruit Description

Inflated seed pods filled with many seeds appear after bloom. They ripen when they are very black and up to 2.5 inches long in late summer. People enjoy the seed pods' appearance for ornamental interest or even dried flower arrangments (when the seed pod is with the stem).

Baptisia australis: Fruit Type

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

Baptisia australis: Fruit Color

grass
Black

Baptisia australis: Fruit Value To Gardener

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

Baptisia australis: Display/Harvest Time

Fall
Spring
Summer
Winter

Baptisia australis: Fruit Length

< 1 inch
1-3 inches
> 3 inches

Baptisia australis: Fruit Width

< 1 inch
1-3 inches
> 3 inches

Baptisia australis Flowers

Baptisia australis: Flower Description

On spikes and arranged on 16-inches-tall racemes, flowers are generally purple/blue (about .75-in.). Plant it in full sun to part shade but in the shade tends to get leggy and droop over.  It forms tall clumps which are especially attractive planted next to wooden fences. The bright, indigo blue flowers are attractive when combined with yellow or white flowering perennials.  Flowers are either on long-stalked clusters above the leaves or axillary. They bloom in late spring (sometimes around early summer) in white, blue, purple/blue, or yellow and are irregular and pea-shaped.

Baptisia australis: Flower Color

filter_vintage
Blue
filter_vintage
Gold/Yellow
filter_vintage
Purple/Lavender
filter_vintage
White

Baptisia australis: Flower Inflorescence

Catkin
Corymb
Cyme
Head
Insignificant
Panicle
Raceme
Solitary
Spadix
Spike
Umbel

Baptisia australis: Flower Value To Gardener

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

Baptisia australis: Flower Bloom Time

Winter
Spring
Summer
Fall

Baptisia australis Leaves

Baptisia australis: Leaf Description

Trifoliate leaves look similar to clovers but are blue/green: these leaflets can be as long as 2 inches and have smooth edges. The alternate leaves have a smooth margin (entire). This perennial herb has 3-parted leaves, turning black upon drying.

Baptisia australis: Leaf Color

spa
Blue
spa
Green

Baptisia australis: Leaf Type

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

Baptisia australis: Leaf Arrangement

Alternate
Opposite
Other/more complex
Rosulate
Whorled

Baptisia 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

Baptisia australis: Leaf Margin

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

Baptisia australis: Hairs Present

No
Yes

Baptisia australis: Leaf Length

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

Baptisia australis: Leaf Feel

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

Baptisia australis Stem

Baptisia australis: Stem Description

Stems with seed pods are valued additions to dried flower arrangements.

Baptisia australis: Stem Buds

Hairy
Hairy tips
Scaly
Smooth/Hairless

Baptisia australis Poisonous to Humans

Baptisia australis: Poison Symptoms

THIS PLANT CAUSES ONLY LOW TOXICITY IF EATEN. Poisonous through ingestion. All parts are poisonous. Symptoms: Nausea, vomiting, diarrhea

Baptisia australis: Poison Toxic Principle

Baptisin and cytisine

Baptisia australis: Poison Severity

High
Low
Medium

Baptisia australis: Causes Contact Dermatitis

No
Yes

Baptisia australis: Poison Part

Bark
Flowers
Fruits
Leaves
Roots
Sap/Juice
Seeds
Stems

Baptisia australis Whole Plant Traits

Baptisia 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

Baptisia australis Cultural Conditions

Baptisia 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)

Baptisia australis: Soil pH

Acid (<6.0)
Alkaline (>8.0)
Neutral (6.0-8.0)

Baptisia australis: Soil Drainage

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

Baptisia australis: Available Space To Plant

12 inches-3 feet
12-24 feet
24-60 feet
3 feet-6 feet
6-feet-12 feet
Less than 12 inches
more than 60 feet

Baptisia australis: NC Region

Coastal
Mountains
Piedmont

Baptisia australis: Soil Texture

Clay
High Organic Matter
Loam (Silt)
Sand
Shallow Rocky

Baptisia australis Landscape

Baptisia 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

Baptisia 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

Baptisia 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

Baptisia 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

Baptisia australis: Attracts

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

Baptisia australis: Problems

Allelopathic
Contact Dermatitis
Frequent Disease Problems
Frequent Insect Problems
Invasive Species
Malodorous
Messy
Poisonous to Humans
Problem for Cats
Problem for Children
Problem for Dogs
Problem for Horses
Short-lived
Spines/Thorns
Weak Wood
Weedy