Aster cordifolius (Symphyotrichum) - HEART-LEAF ASTER (COMMON BLUE WOOD ASTER)

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Very late blooming native perennial (September/October), with clouds of small pale blue flowers. Woodland Aster tolerant to shade.

Usually 3' tall x 1'-1.5' wide, upright plant with heart-shaped basal leaves. Blooms very late, when some trees turn their leaves yellow (which makes nice contrast). Each flower is only 1/2" in diameter.

This aster prefers some shade - half shade, dappled shade, but it is adaptable and can grow in nearly full sun and nearly full shade. For the best blooming should get at least 3 hours of sun.

Tough, adaptable to soil, light and moisture conditions - average soil, clay soil, gritty to loam, with moisture from medium-moist, medium to medium-dry.

Hardy in zones 3-9.

Native to the whole eastern part of USA and Canada (and some states of central USA), where can be found in woodland edges, light deciduous woods, thickets, abandoned land.

Important source of pollen and nectar to butterflies, skippers and native bees. Host plants for Silvery Checkerspot Butterfly, Pearl Crescent Butterfly and several species of moths.

Deer avoids it. Tolerates black walnuts.

Best in half shade or light shade gardens, for pollinator gardens, woodland edges and woodland gardens, for naturalization.

Even this plant is sometimes considered somewhat weedy, it is great companion to other woodland (shade or half shade tolerant) plants like Aconitum, Anemone x hupehensis (Japanese Anemone and hybrids), Aster divaricatus, Chrysogonum virginicum, Eupatorium coelestinum,  Heliopsis, Helianthus divaricatus, Geranium macrorrhizum, Hosta (in half shade with average moist soil), Phlox paniculata, Patrinia scabiosifolia, Rudbeckia triloba, Rudbeckia fulgida 'Goldsturm', Sidago caesia, Solidago flexicaulis, Vernonia, grasses like Hakonechloa,  Carex. Dead-heading will prevent seedlings.

Pot size : square 3.5" x 4" deep perennial pot

Picture copyright : Sten, Commons Wikipedia

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  • 5
    Carefully package, fast shipping! Plants look great.

    Posted by Kiely Turgeon on 18th Oct 2021

    Carefully package, fast shipping! Plants look great.