University of Wisconsin-Madison | Botany Plant Growth Facilities

Botanical Garden

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Genus: Amsonia Species: tabernaemontana Common Name: Blue Star Family: Apocynaceae + Asclepiadaceae Order: Gentianales Native: Southeastern United States Habit: Herbaceous Perennial Height: 2 to 3 feet Width: 2 to 3 feet Flowering Season: Late Spring to Summer Flower Color: Blue Propagation: Seed, division or stem cutting Zone: 3-9 Note: This low maintenance plant is suitable for native plant gardens, woodland gardens, and borders. Leaves turn to a beautiful yellow color during the fall season. Plant has a tendency to become less bushy under rich soil and shady conditions. Tall plants require staking. Prefers sunny to partly shady, moist, well-drained, sandy-loam soil.