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ASTER cordifolius

Image of Aster cordifolius

James Burghardt

Family

Asteraceae

Botanical Name

ASTER cordifolius

Plant Common Name

Blue Wood Aster

General Description

Blue wood aster is a clump-forming perennial found naturally in open, woodland areas throughout most of eastern North America. Tough but lovely, it is valued as a garden plant for its late-season display of showy, pale blue flowers and for its ability to withstand dry, shady conditions.

The slender, branched stems of this aster are lined alternately with smooth, elongated, heart-shaped leaves. Airy panicles of small but numerous, light blue daisies appear from midsummer to autumn. The yellow-centered blossoms are a magnet for butterflies and other small, pollinating insects. If allowed, the small seeds that follow will self-sow readily to form colonies.

This perennial grows easily in full sun to partial shade and moderately moist, fertile, well-drained soil, but is also tolerant of dry soil. Divide clumps in spring every few years, if needed. If seedlings are not desired, cut back faded flowers stems promptly after blooming. Blue wood aster is a great source of fall color for shady mixed borders and woodland gardens. Its soft blossoms also make fine, long-lasting cut flowers.

Characteristics

  • AHS Heat Zone

    8 - 1

  • Sun Exposure

    Full Sun, Partial Sun, Partial Shade

  • Height

    2'-4' / 0.6m - 1.2m

  • Width

    18"-24" / 45.7cm - 61.0cm

  • Bloom Time

    Summer, Late Summer, Early Fall, Fall

  • Native To

    North America

Growing Conditions

  • Growth Rate

    Medium

  • Water Requirements

    Average Water

Ornamental Features

  • Flower Interest

    Showy

  • Fragrant Flowers

    No

  • Fragrant Fruit

    No

  • Fragrant Foliage

    No

  • Bark or Stem Fragrant

    No

  • Flower Petal Number

    Single

  • Repeat Bloomer

    No

  • Showy Fruit

    No

  • Edible Fruit

    No

  • Showy Foliage

    No

  • Foliage Texture

    Medium

  • Foliage Sheen

    Matte

  • Evergreen

    No

  • Showy Bark

    No

Special Characteristics

  • Sharp or Has Thorns

    No

  • Invasive

    Sometimes

  • Attracts

    Birds, Butterflies

  • Self-Sowing

    Yes