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Ozark Bluestar, Shining Blue Star
Amsonia illustris

Family: Apocynaceae (a-pos-ih-NAY-see-ee) (Info)
Genus: Amsonia (am-SO-nee-uh) (Info)
Species: illustris (il-LUS-tree) (Info)

Category:

Perennials

Height:

24-36 in. (60-90 cm)

36-48 in. (90-120 cm)

Spacing:

18-24 in. (45-60 cm)

Hardiness:

USDA Zone 3a: to -39.9 C (-40 F)

USDA Zone 3b: to -37.2 C (-35 F)

USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

Sun Exposure:

Sun to Partial Shade

Danger:

Handling plant may cause skin irritation or allergic reaction

Bloom Color:

Light Blue

Bloom Time:

Late Spring/Early Summer

Foliage:

Herbaceous

Other details:

Average Water Needs; Water regularly; do not overwater

Requires consistently moist soil; do not let dry out between waterings

Soil pH requirements:

Unknown - Tell us

Patent Information:

Non-patented

Propagation Methods:

From herbaceous stem cuttings

From softwood cuttings

From seed; direct sow outdoors in fall

From seed; stratify if sowing indoors

Scarify seed before sowing

Seed Collecting:

Allow seedheads to dry on plants; remove and collect seeds

Properly cleaned, seed can be successfully stored

Regional

This plant has been said to grow in the following regions:

Iowa City, Iowa

Shawnee Mission, Kansas

Jordan, Minnesota

Cole Camp, Missouri

Elsberry, Missouri

Saint Louis, Missouri

Stoutland, Missouri

Warsaw, Missouri

Beatrice, Nebraska

Lincoln, Nebraska

Flint, Texas

show all

Gardeners' Notes:

1
positive
1
neutral
0
negatives
RatingContent
Positive

On Dec 17, 2008, KSBaptisia from Beatrice, NE (Zone 5b) wrote:

Beautiful native plant that is very easy to grow and long lived. The flowers only last for a couple of weeks in late spring, but the foliage looks great throughout the growing season and turns a really nice shade of gold late in the fall.

Neutral

On Nov 22, 2006, frostweed from Josephine, Arlington, TX (Zone 8a) wrote:

Ozark Bluestar, Shining Blue Star, Amsonia illustris is native to Texas and other States.