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Amsonia illustris (Ozark bluestar)
Wasowski, Sally and Andy

Amsonia illustris

Amsonia illustris Woodson

Ozark Bluestar, Showy Blue-star, Missouri Blue Star, Swamp Bluestar

Apocynaceae (Dogbane Family)



USDA Native Status: L48 (N)


From the Image Gallery

6 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb
Fruit Type: Follicle
Size Notes: Up to about 3 feet tall.
Flower: Flowers 1 inch.

Bloom Information

Bloom Color: Blue
Bloom Time: Mar , Apr , May


USA: AR , KS , MO , OK , TX
Native Habitat: Prairie, Plains, Meadows, Pastures, Savannas, Marshes

Growing Conditions

Water Use: Medium
Light Requirement: Part Shade
Soil Moisture: Moist
Soil Description: Clay, Sand, Sandy Loam, Medium Loam, Acid-based. Perhaps best in clay.
Conditions Comments: Half day of sun best.


Use Ornamental: Attractive, Blooms ornamental, Bog or pond area
Conspicuous Flowers: yes
Attracts: Butterflies
Deer Resistant: High


Propagation Material: Seeds

From the National Organizations Directory

According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:

Mt. Cuba Center - Hockessin, DE


Bibref 1620 - Gardening with Native Plants of the South (Reprint Edition) (2009) Wasowski, S. with A. Wasowski
Bibref 318 - Native Texas Plants: Landscaping Region by Region (2002) Wasowski, S. & A. Wasowski
Bibref 328 - Wildflowers of Texas (2003) Ajilvsgi, Geyata.

Search More Titles in Bibliography

Web Reference

Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter

Additional resources

USDA: Find Amsonia illustris in USDA Plants
FNA: Find Amsonia illustris in the Flora of North America (if available)
Google: Search Google for Amsonia illustris


Record Modified: 2022-11-10
Research By: TWC Staff

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