Photo by Melody

PlantFiles: Stokes' Aster, Stokes Aster, Cornflower Aster
Stokesia laevis 'Blue Danube'

Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Stokesia (sto-KEES-ee-uh) (Info)
Species: laevis (LEE-viss) (Info)
Cultivar: Blue Danube

5 vendors have this plant for sale.

24 members have or want this plant for trade.


6-12 in. (15-30 cm)

12-15 in. (30-38 cm)

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)
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)

Sun Exposure:
Full Sun
Sun to Partial Shade

Unknown - Tell us

Bloom Color:
Light Blue

Bloom Time:
Mid Summer


Other details:
This plant is attractive to bees, butterflies and/or birds
Flowers are fragrant
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:
Unknown - Tell us

Propagation Methods:
By dividing the rootball
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse

Seed Collecting:
Allow seedheads to dry on plants; remove and collect seeds
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

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2 positives
1 neutral
No negatives

Gardeners' Notes:

Positive Domehomedee On Oct 20, 2012, Domehomedee from Arroyo Grande, CA (Zone 9a) wrote:

I bought four of these online last fall and was just wowed at how nice two of them looked in summer. The two that did well are in part sun and the two that I just moved were in full sun. I water regularly but with sandy soil and being in sunny California I think they will do better in part shade. I ordered six more this fall, I really like the purple/blue flowers. It's October and they are still blooming. I'm planting them under some oak trees so . . . we'll see.

Positive Steve_in_NC On Jun 13, 2010, Steve_in_NC from Monroe, NC (Zone 8a) wrote:

I planted one specimen in an unused part of my very large back yard, part shade and clay soil, and then gave it seven years of neglect. It thrived all the while, even through drought, and it handily fought off the weeds, reliably flowering every year beginning early June. Now there are at least a half dozen plants and they have staked out their own 2'x4' patch.

I am now clearing out that neglected area. These hardy, charming plants will be divided and allowed to take over the territory. I like a survivor.

Neutral Tjsangel On Jun 24, 2005, Tjsangel from Warren, OH wrote:

Vigorous clumping perennial with blue purple flowers attractive to butterflies and hummingbirds. Blooms profusely in June, July. LIkes some moisture during drought, needs divided every 3 yrs. Can get powdery mildew, treat with insecticide spray. Something different for the landscape.


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

Arroyo Grande, California
Colorado Springs, Colorado
Milton, Florida
Zephyrhills, Florida
Hebron, Kentucky
Baton Rouge, Louisiana
Saint Francisville, Louisiana
Minneapolis, Minnesota
Stillwater, Minnesota
Vicksburg, Mississippi
Munsonville, New Hampshire
Orchard Park, New York
Monroe, North Carolina
Cleveland, Ohio
Geneva, Ohio
Warren, Ohio
Newalla, Oklahoma
Ashland, Oregon
Irwin, Pennsylvania
Knoxville, Tennessee
Jacksonville, Texas
Virginia Beach, Virginia

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