Blue Star Flower Amsonia tabernaemontana var. tabernaemontana
Other Common Name(s):
- Phonetic Spelling
- am-SO-nee-ah TAB-er-nay-mon-TAY-nah variety TAB-er-nay-mon-TAY-nah
- Description
-
Bluestar is a native herbaceous perennial that is found most often in wet, sandy, rich, open and rocky woods and thickets. It has an erect, clump-forming growth pattern. 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 plant can be cut close to the ground or left for winter interest.
Grows best in full sun. Where this is not possible, the plant may need to be staked due to its floppy form. Cutting the stems back after flowing will create a more rounded, neater appearance.
Drought tolerant once established.
One of our most beautiful native species, bluestar makes a delicate display from the mountains to the coast. The light blue flowers are followed by elongated, pod-like fruits containing hard, black seeds that can be used for propagation. This plant is 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 that each division has at least one eye. Deadhead to prevent self-seeding.
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.
Insects, Diseases, or Other Plant 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.
- Profile Video:
- See this plant in the following landscape:
- Dry Stream Bed Garden in Cabarrus County
- Cultivars / Varieties:
-
- 'Blue Ice'
- 'Storm Cloud'
Near black stems, dark green leaves with silver veins.
var. salicifolia
- var. tabernaemontana
Wider (ovate) leaves.
Leaves 1/4" wide. - 'Blue Ice'
- 'Blue Ice', 'Storm Cloud', var. salicifolia, var. tabernaemontana
- Tags:
- Cultivars / Varieties:
-
- 'Blue Ice'
- 'Storm Cloud'
Near black stems, dark green leaves with silver veins.
var. salicifolia
- var. tabernaemontana
Wider (ovate) leaves.
Leaves 1/4" wide. - 'Blue Ice'
- 'Blue Ice', 'Storm Cloud', var. salicifolia, var. tabernaemontana
- Tags:
-
-
Attributes:
- Genus:
- Amsonia
- Species:
- tabernaemontana
- Family:
- Apocynaceae
- Life Cycle:
- Perennial
- Recommended Propagation Strategy:
- Division
- Root Cutting
- Seed
- Stem Cutting
- Country Or Region Of 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.
- Play Value:
- Attracts Pollinators
- Colorful
- Easy to Grow
- Textural
- Wildlife Food Source
- Particularly Resistant To (Insects/Diseases/Other Problems):
- Deer
- Dimensions:
- Height: 2 ft. 0 in. - 3 ft. 0 in.
- Width: 2 ft. 0 in. - 3 ft. 0 in.
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Whole Plant Traits:
- Plant Type:
- Herbaceous Perennial
- Native Plant
- Wildflower
- Woody Plant Leaf Characteristics:
- Deciduous
- Habit/Form:
- Clumping
- Rounded
- Growth Rate:
- Slow
- Maintenance:
- Low
- Texture:
- Fine
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Cultural Conditions:
- 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 To Plant:
- 12 inches-3 feet
- NC Region:
- Coastal
- Mountains
- Piedmont
- USDA Plant Hardiness Zone:
- 3a, 3b, 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b
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Fruit:
- Fruit Value To Gardener:
- Showy
- Display/Harvest Time:
- Fall
- Fruit Type:
- Follicle
- Fruit Length:
- > 3 inches
- Fruit Description:
- Attractive, narrow beanlike pods form after flowering.
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Flowers:
- Flower Color:
- Blue
- Flower Inflorescence:
- Cyme
- Panicle
- Flower Value To Gardener:
- Good Cut
- Showy
- Flower Bloom Time:
- Spring
- Summer
- Flower Shape:
- Star
- Tubular
- Flower Petals:
- 4-5 petals/rays
- Flower Size:
- < 1 inch
- Flower Description:
- Clusters of soft light blue, star-like flowers appear in April. They may be hidden by the upper leaves.
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Leaves:
- Woody Plant Leaf Characteristics:
- Deciduous
- Leaf Color:
- Green
- Leaf Value To Gardener:
- Showy
- Deciduous Leaf Fall Color:
- Gold/Yellow
- Leaf Type:
- Simple
- Leaf Arrangement:
- Alternate
- Leaf Shape:
- Lanceolate
- Ovate
- Leaf Margin:
- Entire
- Hairs Present:
- No
- Leaf Length:
- 3-6 inches
- Leaf Width:
- 1-3 inches
- 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.
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Stem:
- Stem Color:
- Green
- Stem Is Aromatic:
- No
- Stem Form:
- Straight
- Stem Surface:
- Smooth (glabrous)
- 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.
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Landscape:
- Landscape Location:
- Coastal
- Container
- Meadow
- Naturalized Area
- Patio
- Walkways
- Landscape Theme:
- Butterfly Garden
- Cottage Garden
- Fairy Garden
- Native Garden
- Pollinator Garden
- Rain Garden
- Shade Garden
- Design Feature:
- Accent
- Mass Planting
- Small groups
- Specimen
- Attracts:
- Butterflies
- Pollinators
- Resistance To Challenges:
- Deer
- Drought