• Photo of Amsonia tabernaemontana (Amsonia tabernaemontanas)

Plant Profile: Amsonia tabernaemontana

Taxonomy: Amsonia tabernaemontana

Names

Blue Dogbane, Blue Star, Blue Star Flower, Eastern Bluestar, Woodland Bluestar

  • Photo of Amsonia tabernaemontana (Amsonia tabernaemontanas)

Phonetic Spelling:am-SO-nee-ah tab-er-nay-mon-TAY-nah

Genus:Amsonia

Species:tabernaemontana

Family:Apocynaceae

Bluestar is a perennial herb native to North America, typically thriving in moist, sandy, nutrient-rich, open woodlands and thickets. It exhibits an upright, clump-forming growth habit. In late spring, it produces clusters of light blue, star-shaped flowers measuring about 3/4 inch, which bloom atop its upright, leafy stems. The plant's slender, willow-like leaves are a dull green and may turn yellow in the fall. Bluestar can be pruned close to the ground or left standing for winter interest.

This plant flourishes best in full sunlight. In areas with less sun, it may require staking to support its somewhat floppy growth. Pruning the stems after flowering can help achieve a more rounded and tidy appearance.

Once established, Bluestar is drought-resistant.

Recognized as one of the most stunning native species, Amsonia offers a graceful display from mountainous regions to coastal areas. Its light blue flowers give way to elongated, pod-like fruits that contain hard, black seeds suitable for propagation. The plant's foliage contains a toxic white latex, making it resistant to browsing by deer and other herbivores.

When propagating from seeds, expect quick germination; however, the plant will not produce flowers until its second year. Division can be performed in either spring or fall while the plant is dormant, ensuring that each division includes at least one eye. To prevent self-seeding, it is advisable to deadhead the flowers.

In 2006, this plant was honored as the NC Wildflower of the Year, a designation managed by the North Carolina Botanical Garden with support from the Garden Club of North Carolina.

Potential issues include the occurrence of rust.

Amsonia tabernaemontana Feature Summary

Amsonia tabernaemontana Image Gallery

Tags

#full sun tolerant
#rain garden
#blue
#drought tolerant
#perennial
#resistant
#wildlife plant
#showy
#blue flowers
#cut flowers
#NC native
#deer resistant
#herbaceous perennial
#fall fruits
#spring interest
#native wildflower
#wildflower garden
#early spring flowers
#food source fall
#food source nectar
#clay soils tolerant
#non-evasive
#butterfly friendly
#partial shade tolerant
#NC Wildflower of the Year

Similar Plants

Amsonia tabernaemontana is often confused with:

Amsonia tabernaemontana Feature Summary

Attributes
Central & Eastern U.S.A
AL, AR, DE, FL, GA, IL, IN, KS, KY, LA, MA, MD, MO, MS, NC, NJ, NY, OH, OK, PA, SC, TN, TX, VA
Hummingbirds, carpenter bees, hummingbird moths, as well as butterflies like Mourning Cloak, feed on the nectar from the blooms.
Perennial
Woody
Seed
Stem Cutting
Division
Root Cutting
Wildlife Food Source
Attracts Pollinators
Colorful
Textural
Easy to Grow
Fruit
Attractive, narrow beanlike pods form after flowering.
Follicle
> 3 inches
Flowers
Clusters of soft light blue, star-like flowers appear in April. They may be hidden by the upper leaves.
Spring
Summer
4-5 petals/rays
Tubular
Star
< 1 inch
Leaves
Narrow oval leaves that are bright green on the surface and pale green underneath. They turn a showy golden-yellow in the fall.
Ovate
Lanceolate
3-6 inches
1-3 inches
Stem
A light-green multi-stemmed perennial. After flowering, the 2-3' stems may need to be cut back by up to half the plants' height to maintain a neater appearance.
Smooth (glabrous)
Straight
Whole Plant Traits
Perennial
Native Plant
Wildflower
Herb
Rounded
Clumping
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)
Neutral (6.0-8.0)
Good Drainage
Moist
Occasionally Wet
Occasionally Dry
Coastal
Mountains
Piedmont
4a
4b
5b
5a
6a
6b
7a
7b
8b
8a
3a
3b
9a
9b
Clay
Loam (Silt)
Sand
Landscape
Butterfly Garden
Pollinator Garden
Rain Garden
Cottage Garden
Native Garden
Shade Garden
Fairy Garden
Mass Planting
Accent
Small groups
Specimen
Container
Patio
Walkways
Meadow
Naturalized Area
Coastal
Butterflies
Pollinators

Amsonia tabernaemontana Attributes

Amsonia tabernaemontana: Country Or Region Of Origin

Central & Eastern U.S.A

Amsonia tabernaemontana: Distribution

AL, AR, DE, FL, GA, IL, IN, KS, KY, LA, MA, MD, MO, MS, NC, NJ, NY, OH, OK, PA, SC, TN, TX, VA

Amsonia tabernaemontana: Wildlife Value

Hummingbirds, carpenter bees, hummingbird moths, as well as butterflies like Mourning Cloak, feed on the nectar from the blooms.

Amsonia tabernaemontana: Particularly Resistant To (Insects/Diseases/Other Problems)

Deer

Amsonia tabernaemontana: Life Cycle

Annual
Biennial
Bulb
Perennial
Woody

Amsonia tabernaemontana: Recommended Propagation Strategy

Division
Grafting
Layering
Leaf Cutting
Root Cutting
Seed
Stem Cutting

Amsonia tabernaemontana: 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

Amsonia tabernaemontana Fruit

Amsonia tabernaemontana: Fruit Description

Attractive, narrow beanlike pods form after flowering.

Amsonia tabernaemontana: Fruit Type

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

Amsonia tabernaemontana: Fruit Value To Gardener

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

Amsonia tabernaemontana: Display/Harvest Time

Fall
Spring
Summer
Winter

Amsonia tabernaemontana: Fruit Length

< 1 inch
1-3 inches
> 3 inches

Amsonia tabernaemontana Flowers

Amsonia tabernaemontana: Flower Description

Clusters of soft light blue, star-like flowers appear in April. They may be hidden by the upper leaves.

Amsonia tabernaemontana: Flower Color

filter_vintage
Blue

Amsonia tabernaemontana: Flower Inflorescence

Catkin
Corymb
Cyme
Head
Insignificant
Panicle
Raceme
Solitary
Spadix
Spike
Umbel

Amsonia tabernaemontana: Flower Value To Gardener

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

Amsonia tabernaemontana: Flower Bloom Time

Winter
Spring
Summer
Fall

Amsonia tabernaemontana: 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

Amsonia tabernaemontana: Flower Shape

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

Amsonia tabernaemontana: Flower Size

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

Amsonia tabernaemontana Leaves

Amsonia tabernaemontana: Leaf Description

Narrow oval leaves that are bright green on the surface and pale green underneath. They turn a showy golden-yellow in the fall.

Amsonia tabernaemontana: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Amsonia tabernaemontana: Leaf Color

spa
Green

Amsonia tabernaemontana: Deciduous Leaf Fall Color

spa
Gold/Yellow

Amsonia tabernaemontana: Leaf Type

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

Amsonia tabernaemontana: Leaf Arrangement

Alternate
Opposite
Other/more complex
Rosulate
Whorled

Amsonia tabernaemontana: 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

Amsonia tabernaemontana: Leaf Margin

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

Amsonia tabernaemontana: Hairs Present

No
Yes

Amsonia tabernaemontana: Leaf Length

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

Amsonia tabernaemontana: Leaf Value To Gardener

Edible
Fragrant
Good Cut
Good Dried
Long-lasting
Showy

Amsonia tabernaemontana: Leaf Width

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

Amsonia tabernaemontana Stem

Amsonia tabernaemontana: Stem Description

A light-green multi-stemmed perennial. After flowering, the 2-3' stems may need to be cut back by up to half the plants' height to maintain a neater appearance.

Amsonia tabernaemontana: Stem Color

grass
Green

Amsonia tabernaemontana: Stem Is Aromatic

No
Yes

Amsonia tabernaemontana: Stem Surface

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

Amsonia tabernaemontana: Stem Form

Straight
Zig Zags

Amsonia tabernaemontana Whole Plant Traits

Amsonia tabernaemontana: 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

Amsonia tabernaemontana: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Amsonia tabernaemontana: 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

Amsonia tabernaemontana: Growth Rate

Slow
Medium
Rapid

Amsonia tabernaemontana: Maintenance

Low
Medium
High

Amsonia tabernaemontana Cultural Conditions

Amsonia tabernaemontana: 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)

Amsonia tabernaemontana: Soil pH

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

Amsonia tabernaemontana: Soil Drainage

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

Amsonia tabernaemontana: 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

Amsonia tabernaemontana: NC Region

Coastal
Mountains
Piedmont

Amsonia tabernaemontana: USDA Plant Hardiness Zone

thermostat
3a
thermostat
3b
thermostat
4a
thermostat
4b
thermostat
5a
thermostat
5b
thermostat
6a
thermostat
6b
thermostat
7a
thermostat
7b
thermostat
8a
thermostat
8b
thermostat
9a
thermostat
9b

Amsonia tabernaemontana: Soil Texture

Clay
High Organic Matter
Loam (Silt)
Sand
Shallow Rocky

Amsonia tabernaemontana Landscape

Amsonia tabernaemontana: 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

Amsonia tabernaemontana: 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

Amsonia tabernaemontana: 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

Amsonia tabernaemontana: 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

Amsonia tabernaemontana: Attracts

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