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Eastern Bluestar, Woodland Blue Star, Willow Amsonia, Blue Dogbane 'Blue Ice'

Amsonia tabernaemontana

Family: Apocynaceae (a-pos-ih-NAY-see-ee) (Info)
Genus: Amsonia (am-SO-nee-uh) (Info)
Species: tabernaemontana (tab-er-nay-MON-tah-nuh) (Info)
Cultivar: Blue Ice



Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Grow outdoors year-round


12-18 in. (30-45 cm)

18-24 in. (45-60 cm)


18-24 in. (45-60 cm)


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)

USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:

Sun to Partial Shade


Unknown - Tell us

Bloom Color:

Medium Blue

Bloom Time:

Late Spring/Early Summer



Other details:

Unknown - Tell us

Soil pH requirements:

Unknown - Tell us

Patent Information:


Propagation Methods:

By dividing the rootball

Seed Collecting:

N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed


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

Menifee, California

Jacksonville, Florida

Saint Charles, Illinois

Winnetka, Illinois

Dracut, Massachusetts

Hopkins, Minnesota

Pontotoc, Mississippi

Litchfield, New Hampshire

Fayetteville, New York

Elizabeth City, North Carolina

Cleveland, Ohio

Williamsburg, Ohio

West Chester, Pennsylvania

Wilkes Barre, Pennsylvania

Greenville, South Carolina

Knoxville, Tennessee

Medina, Tennessee

Desoto, Texas

Mc Kinney, Texas

Concrete, Washington

Charleston, West Virginia

Madison, Wisconsin

show all

Gardeners' Notes:


On Jul 8, 2016, coriaceous from ROSLINDALE, MA wrote:

A long-lived, adaptable plant with clean foliage. I like the flowers, whose blue color is more saturated than that of the other bluestars I'm familiar with, but it doesn't stay in bloom for long---perhaps 2 weeks.

Requires good sun exposure for the leaves to turn yellow in fall.

Spotted in a seedling block of A. tabernaemontana at Connecticut's Sunny Border Nursery by Michael Dodge, then of White Flower Farm.


On Jul 8, 2016, Rickwebb from Downingtown, PA wrote:

My biggest customer had me plant several of this dwarf form of the Willow Bluestar in between a low stone wall and the lawn in a border about four years ago. They are doing well and are a low maintenance, clean, easy perennial.


On Jul 6, 2016, JenDion from Litchfield, NH (Zone 5b) wrote:

I just read the most recent comment on this plant (prior to mine) about how the needle-variety blue star does not seem to have the fall color that Amsonia is touted for....Well, I bought 'Blue Ice' expecting a 2 season display...Ha! Not! Yes, the blue flowers are nice, and they do flower for quite a while, but I wanted that clear-yellow fall color they are known for too....Nothing. It's exactly as the last post said - it just sort of looks like it's dying.

I'm actually thinking about getting rid of it!


On Mar 28, 2016, bobbieberecz from Concrete, WA wrote:

This is one of those long lasting late spring bloomers that always gets attention. All visitors want to know what it is and where to get it. I have one that grows 20 to 25 inches by about the same in the dappled shade of an alder tree. It gets a little (maybe a couple of hours) of morning to noon sun. It grows in a perfectly round mound with beautiful vivid blue flowers. This is NOT the needle leaf variety; it appears more substantial and even without the flowers looks fresh in the garden. I have the needle leaf variety and am not impressed with the fall color it supposed to boast. It just looks like it's dying back to me; and the flowers are a pale blue and don't stand out the way blue ice does. I planted a new blue ice last year in the open in all day sun. We had a nasty drought... read more


On Jul 1, 2011, ms_greenjeans from Hopkins, MN (Zone 4a) wrote:

Blue Ice is one of those mainstay/backbone of your garden type perennials. It is rather like a small shrub, and it looks good all the time. The foliage is always clean and glossy, the small blue flowers are lovely and last quite awhile, and it also has good fall color. It's very low maintenance and trouble-free.


On May 9, 2011, echinaceamaniac from (Clint) Medina, TN (Zone 7b) wrote:

Awesome border plant. Blooms for weeks! The color is very vibrant. Very nice.