Amsonia tabernaemontana

blue star, willow slimpod, eastern bluestar, blue dogbane, willow amsonia, woodland bluestar
Family

Apocynaceae

Leaf Arrangement

alternate

Leaf Attachment

petiolate

Leaf Margin

entire

Leaf Type

simple

Leaf Shape

oblong, elliptic, lanceolate, ovate

Growth Form

forb

Flower Color

blue, white

Flower Month

March - May

Height (meters)

0.3 - 1.0

Milky Sap

Yes

Armed/Unarmed

Unarmed

Origin

native

Lifespan

perennial

Growing Season

Warm season


Wetland Class

FACW

Prairie Coefficient of Conservatism

6

Cultural Information

This species is easily grown from seed. If seeds are to be stored they should be collected when the follicles turn brown and split. Allow the pods to dry then remove seeds. Before planting the hard coated seed should be scarified and soaked in water for 1-2 days. Seeds collected when still green can be sown fresh and will germinate with no treatment. The fruit ripens from August to October. Store dry seeds at about 40 degrees F. Plant 1/4 inch deep in spring or fall. Tip cuttings taken in May, or woody cuttings taken any time, are also an effective method of mass producing Amsonia. Plants may be increased by root division while the plants are dormant.

Natural History

Amsonia prefers rich soil, high organic matter, and moist locations.

Habitat

Moist or wet woods or prairie.