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Amsonia Species, Ozark Bluestar, Shining Blue Star

Amsoniaillustris

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Amsonia illustris by Equilibrium
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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
Synonym
Sun Exposure
Sun to Partial Shade
Foliage
Herbaceous
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)
Danger
Handling plant may cause skin irritation or allergic reaction
Bloom Color
Light Blue
Bloom Time
Late Spring/Early Summer
Other Details
Category
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Requires consistently moist soil; do not let dry out between waterings
Foliage Color

Unknown - Tell us

Where to Grow

Unknown - Tell us

Bloom Characteristics

Unknown - Tell us

Bloom Size

Unknown - Tell us

Other details

Unknown - Tell us

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 is said to grow outdoors in the following regions:

Iowa City, Iowa

Shawnee Mission, Kansas

Jordan, Minnesota

Cole Camp, Missouri

Elsberry, Missouri

Saint Louis, Missouri

Stoutland, Missouri

Beatrice, Nebraska

Lincoln, Nebraska

Morton, Pennsylvania

Flint, Texas

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Gardener's Notes:

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K
K
KSBaptisia
Beatrice, NE (Zone 5b) | December 2008 | positive

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 fol...Read More

F
F
frostweed
Josephine, Arlington, TX (Zone 8a) | November 2006 | neutral

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

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