Photo by Melody

PlantFiles: Ozark Bluestar, Shining Blue Star
Amsonia illustris

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

4 vendors have this plant for sale.

8 members have or want this plant for trade.

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

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to view:

By Equilibrium
Thumbnail #1 of Amsonia illustris by Equilibrium

By Equilibrium
Thumbnail #2 of Amsonia illustris by Equilibrium

By Equilibrium
Thumbnail #3 of Amsonia illustris by Equilibrium

By Equilibrium
Thumbnail #4 of Amsonia illustris by Equilibrium

By creekwalker
Thumbnail #5 of Amsonia illustris by creekwalker

By creekwalker
Thumbnail #6 of Amsonia illustris by creekwalker

By growin
Thumbnail #7 of Amsonia illustris by growin

There are a total of 8 photos.
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Profile:

1 positive
1 neutral
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive KSBaptisia 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 frostweed 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.

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



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