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Eastern Blue Star

Amsonia tabernaemontana (am-SO-nee-ah TAB-er-nay-mon-TAY-nah)

Family: Apocynaceae Native Herbaceous (3-15 ft)

Eastern bluestar is a native herbaceous perennial in the dogbane family (Apocynaceae) native to central and eastern North America and found most often in wet, sandy, rich, open and rocky woods and thickets. The Genus name honors Dr. John Amson, an English physician and amateur botanist who lived and worked in Williamsburg, Virginia during the colonial period. The specific epithet honors Jakob Theodor von Bergzabern (d. 1590) who Latinized his name as Tabernaemontanus. This plant will grow 2-3 feet tall and wide in an erect clumping form in full sun to partial shade. Too much shade may cause the plant to flop and need staking. Cutting the stems back after flowing will create a more rounded, neater appearance. Plant in well-drained moist to occasionally wet soils. Drought tolerant once established and resistant to damage by deer and other herbivores due to the foliage containing a toxic white latex. When propagating by seed, the seedlings will germinate quickly, but the plant will not flower until the second year. Division can be accomplished in spring or fall when the plant is dormant, ensuring each division has at least one eye. Deadhead to prevent self-seeding. Clusters of 3/4", light blue, star-like flowers open in late spring atop erect, leafy stems. Its narrow, willow-shaped, dull green foliage may turn yellow in fall. The flowers are followed by elongated, pod-like fruits containing hard, black seeds that can be used for propagation. This plant was selected as the 2006 NC Wildflower of the Year, a program managed by the North Carolina Botanical Garden with some financial support from the Garden Club of North Carolina. Use eastern bluestar in the border or in groups in native, pollinator, cutting or cottage gardens. Insects, Diseases, or Other Plant Problems: No significant problems . Rust may occur. VIDEO created by Andy Pulte for “Landscape Plant Identification, Taxonomy and Morphology” a plant identification course offered by the Department of Plant Sciences, University of Tennessee.

Source: NC State Extension Gardener Plant Toolbox ↗ Reconciled to full toolbox: matched by slug to slug 'amsonia-tabernaemontana'. Identity (id/common/scientific name) preserved from the original 87-plant Hunnicutt set; attribute data refreshed from the 67-attribute toolbox scrape.

How it fits the guild

Guild layer 4 - Herbaceous (3-15 ft) Optimal soil pH Neutral (6.0-8.0)
See companions & conflicts ↓

Companions & Conflicts

Curated pairwise relationships between this plant and others in the library — who feeds whom, who competes, who confuses the pests. Green reads as a good pairing, red as one to avoid.

No curated interactions recorded for this species yet.

Also noted by NC State

Related species the NC State Plant Toolbox flags for this plant — look-alikes to tell apart, and plants that play a similar role in a planting. Ones we carry in the library are linked.

Often confused with Amsonia 'Blue Ice'

Full plant profile

Growing Conditions
Plant type
Herbaceous Perennial; Native Plant; Wildflower
Life cycle
Perennial
USDA zones
3a, 3b, 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b
Light
Full sun (6 or more hours of direct sunlight a day) | Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Soil texture
Clay; Loam (Silt); Sand
Soil pH
Neutral (6.0-8.0)
Soil drainage
Good Drainage | Moist | Occasionally Dry | Occasionally Wet
Available space
12 inches-3 feet
NC region
Coastal; Mountains; Piedmont
Mature size
Height: 2 ft. 0 in. - 3 ft. 0 in. | Width: 2 ft. 0 in. - 3 ft. 0 in.
Growth rate
Slow
Maintenance
Low
Canopy layer
4 - Herbaceous (3-15 ft)
Form & Appearance
Habit / form
Clumping; Rounded
Texture
Fine
Foliage
Deciduous
Leaf color
Green
Leaf type
Simple
Leaf arrangement
Alternate
Leaf shape
Lanceolate; Ovate
Leaf margin
Entire
Leaf value
Showy
Leaf size
3-6 inches long, 1-3 inches wide
Hairs present
No
Leaf detail
Narrow oval leaves that are bright green on the surface and pale green underneath. They turn a showy golden-yellow in the fall.
Fall color
Gold/Yellow
Flower color
Blue
Flower value
Good Cut; Showy
Flower form
Cyme; Panicle
Flower shape
Star; Tubular
Flower size
< 1 inch
Flower detail
Clusters of soft light blue, star-like flowers appear in April. They may be hidden by the upper leaves.
Bloom time
Spring; Summer
Fruit type
Follicle
Fruit value
Showy
Fruit size
> 3 inches long
Fruit detail
Attractive, narrow beanlike pods form after flowering.
Stem color
Green
Stem detail
Smooth erect light green stems
Wildlife & Ecology
Native status
Native
Origin
Central & Eastern U.S.A
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
Wildlife value
Hummingbirds, carpenter bees, hummingbird moths, as well as butterflies like Mourning Cloak, feed on the nectar from the blooms.
Attracts
Butterflies; Pollinators
Play value
Attracts Pollinators; Colorful; Easy to Grow; Textural; Wildlife Food Source
Food & Medicine
Harvest time
Fall
Fruit type
Follicle
Landscape Use
Landscape location
Coastal; Container; Meadow; Naturalized Area; Patio; Walkways
Landscape theme
Butterfly Garden; Cottage Garden; Cutting Garden; Native Garden; Pollinator Garden; Rain Garden
Design feature
Accent; Mass Planting; Small groups; Specimen
Garden tags
#blue flowers #full sun tolerant #NC native #native wildflower #food source nectar #flowers early spring #food source fall #fruits fall #spring interest #clay soils tolerant #drought tolerant #herbaceous perennial #butterfly friendly #rain garden #partial shade tolerant #NC Wildflower of the Year #cutting garden #landscape plant sleuths course #perennial #wildlife friendly #pollinator plant #NC Native Pollinator Plant #wildflower #HS304
Problems & Resistance
Insect problems
Orange-Shouldered Sherbet Moth
Resistant to
Deer; Drought
Particularly resistant to
Deer
Propagation
Division; Root Cutting; Seed; Stem Cutting

Planted at Hunnicutt

Nobody’s planted this one yet.