Home / Guides / Plant Files / Apocynaceae

Amsonia Species, Ozark Bluestar, Shining Blue Star

Amsoniaillustris

Upload Image Print Article
Amsonia illustris by Equilibrium
View Gallery 3 photos
Upload Image Print Article
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

show all
View this plant in a garden
8 members have or want this plant for trade

Featured Videos

Gardener's Notes:

Post Comment
1
positive
1
neutral
0
negative
Sort By:
Post Comment
Sort By:
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.

Popular Plants
SEE ALL
Iris
Peppers
Hydrangeas
Hostas
Contribute to Dave’s Garden
Add a New Plant to the List
Featured
BUG FILES
(Atheropla decaspila)
BIRD FILES
Red-legged Seriema
(Cariama cristata)
Quick Links
View All Families
View All Genera
View All Species
Freeze/Frost Dates
PlantFiles FAQ
Plants with no Photos
Contribute to Dave’s Garden
Add a New Plant to the List
Featured
BUG FILES
(Atheropla decaspila)
BIRD FILES
Red-legged Seriema
(Cariama cristata)