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Cornflower Aster Stokesia laevis 'Blue Danube'

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Other plants called Cornflower Aster:

Description

Blue Danube is a cultivar of the native Stokes' Aster or Cornflower Aster. It is a showy herbaceous perennial that is named for the Danube River due to its lavender-blue colored flowers. It attracts bees, butterflies, and hummingbirds, is low maintenance, drought tolerant once established, heat tolerant, deer and rabbit resistant. 

The leaves are medium to dark green, hairy, leathery, and measure 6 inches long. The hairy stems arise from the basal rosette and are 12 to 18 inches in height. In warmer climates, the leaves may be retained throughout the winter months. The solitary flower is pale lavender to blue with a white center and arises at the top of the stem. It measures about 2 to 4 inches across. The white center is surrounded by lavender to blue florets, and the florets are surrounded by lavender to blue, deeply divided petals/rays. It is best to remove the flowers when faded to encourage new buds. 

When the plant has completed blooming, it may be cut back to its basal foliage. The plants may need to be divided about every 3-4 years. Divisions may be done in the spring and fall. The soil should be moist but well-drained.

The 'Blue Danube" with its fluffy, pale lavender to bluish cornflower-like blooms can be enjoyed in many different settings including borders, cottage gardens, small groups, mass plantings, or woodlands. It prefers sun to partial shade in moist well-drained soil.

 

 

More information on Stokesia laevis.

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Tags:
#showy flowers#drought tolerant#blue flowers#low maintenance#rabbit resistant#long-lasting flowers#summer flowers#deer resistant#border planting#butterfly friendly#pollinator garden#bee friendly
 
Cultivars / Varieties:
Tags:
#showy flowers#drought tolerant#blue flowers#low maintenance#rabbit resistant#long-lasting flowers#summer flowers#deer resistant#border planting#butterfly friendly#pollinator garden#bee friendly
  • Attributes:
    Genus:
    Stokesia
    Species:
    laevis
    Family:
    Asteraceae
    Life Cycle:
    Perennial
    Recommended Propagation Strategy:
    Division
    Wildlife Value:
    Pollinator and nectar plant for bees, butterflies, and hummingbirds
    Particularly Resistant To (Insects/Diseases/Other Problems):
    drought, rabbit
    Dimensions:
    Height: 1 ft. 0 in. - 1 ft. 0 in.
    Width: 1 ft. 0 in. - 1 ft. 6 in.
  • Whole Plant Traits:
    Plant Type:
    Herbaceous Perennial
    Habit/Form:
    Mounding
    Spreading
    Growth Rate:
    Medium
    Maintenance:
    Low
    Texture:
    Medium
  • Cultural Conditions:
    Light:
    Full sun (6 or more hours of direct sunlight a day)
    Partial Shade (Direct sunlight only part of the day, 2-6 hours)
    Soil Texture:
    Clay
    Loam (Silt)
    Sand
    Soil pH:
    Acid (<6.0)
    Neutral (6.0-8.0)
    Soil Drainage:
    Good Drainage
    Moist
    Occasionally Dry
    NC Region:
    Coastal
    Mountains
    Piedmont
    USDA Plant Hardiness Zone:
    5a, 5b, 6b, 6a, 7a, 7b, 8a, 8b, 9b, 9a
  • Fruit:
    Fruit Color:
    Brown/Copper
    Display/Harvest Time:
    Fall
    Fruit Type:
    Achene
    Fruit Length:
    < 1 inch
    Fruit Width:
    < 1 inch
    Fruit Description:
    The fruits are small achenes. A mature seed is brown, papery, and about 1/4 inch long.
  • Flowers:
    Flower Color:
    Blue
    White
    Flower Inflorescence:
    Head
    Flower Value To Gardener:
    Long-lasting
    Showy
    Flower Bloom Time:
    Summer
    Flower Shape:
    Radial
    Flower Petals:
    more than 20 petals/rays
    Flower Size:
    1-3 inches
    Flower Description:
    The flower is solitary, somewhat daisy-like, and appears at the top of the stem. The bloom measures 2 to 4 inches across. The flower head is pale lavender to blue in color and has many tubular disk florets which are surrounded by deeply divided, thin petal/rays. A prominent white stigma is present in the center of the flower. Stokes' asters bloom typically from May to September. The flowers have a delicate fragrance.
  • Leaves:
    Leaf Color:
    Green
    Leaf Feel:
    Leathery
    Leaf Type:
    Simple
    Leaf Arrangement:
    Alternate
    Leaf Shape:
    Elliptical
    Lanceolate
    Leaf Margin:
    Dentate
    Hairs Present:
    Yes
    Leaf Length:
    3-6 inches
    Leaf Width:
    < 1 inch
    Leaf Description:
    The plant begins as a basal rosette with straplike leaves. The leaves grow in low mounds and appear leathery. The leaves are dark green, hairy, medium-sized, lanceolate to elliptic in shape, and have an alternate arrangement. They measure 6 inches long, but the basal leaves are larger than the stem leaves. The leaf margins are dentate near the base of the plant.
  • Stem:
    Stem Color:
    Green
    Stem Is Aromatic:
    No
    Stem Cross Section:
    Round
    Stem Form:
    Straight
    Stem Surface:
    Hairy (pubescent)
    Stem Description:
    The hairy stems are 12-18 inches tall, erect and arise from a basal rosette.
  • Landscape:
    Landscape Location:
    Container
    Patio
    Pond
    Small Space
    Walkways
    Landscape Theme:
    Butterfly Garden
    Cottage Garden
    English Garden
    Pollinator Garden
    Rain Garden
    Design Feature:
    Border
    Mass Planting
    Small groups
    Attracts:
    Bees
    Butterflies
    Hummingbirds
    Resistance To Challenges:
    Deer
    Drought
    Heat
    Rabbits