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Common Blue Wood Aster

Symphyotrichum cordifolium

Also listed as Aster cordifolius, Symphyotrichum sagittifolium

Also known as Blue Wood Aster, Heart-leaved Aster

herbaceous☀️ full sun💧💧 moderate water❄ Hardy: Zone 3a – Zone 8b

Climate Match for your location

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A native North American wildflower producing delicate blue to purple daisy-like flowers in late summer and fall. It is drought-tolerant once established and attracts pollinators to gardens.

Why grow it

Common Blue Wood Aster flowers later in the season than many native asters, extending pollinator resources into fall when other blooms have faded. Its heart-shaped foliage and compact growth habit make it useful for woodland edges and shade gardens where taller aster species may overshadow nearby plants. Once established, it requires minimal water and maintenance compared to non-native ornamental asters.

Watch out for

This species prefers partial shade to dappled sunlight; flowering may be sparse or plants may stretch leggy in full sun. In very moist soils or poorly draining sites, it can develop mildew or root rot, so ensure adequate air circulation and avoid waterlogged conditions. Like many native asters, it may take a full growing season to become established before flowering reliably.

Overview

Form
Upright
Growth Rate
moderate
Size
2–5′ tall × 1.5–3′ wide
Dormancy
deciduous
Family
Asteraceae
Pollinators & beneficial insects

Native to the United States

Native Range

Eastern North America

Native to: Alabama, Arkansas, Connecticut, District of Columbia, Delaware, Georgia, Iowa, Illinois, Indiana, Kentucky, Massachusetts, Maryland, Maine, Michigan, Minnesota, Missouri, North Carolina, Nebraska, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Virginia, Vermont, Wisconsin, West Virginia

Seasonality

Bloom Season

J
F
M
A
M
J
J
A
S
O
N
D

Season of Interest

SummerFall

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Companion Planting

Plants well with