Symphyotrichum cordifolium(L.) G.L.Nesom

Common Blue Wood Aster

WFO wfo-0000129024 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Symphyotrichum cordifolium, photographed by Michelle Norcéide
fig. a Michelle Norcéide, CC BY 4.0 / 2022-06-13 / obs. 205909848
Symphyotrichum cordifolium, photographed by Henry "Nick" Robertson
fig. b Henry "Nick" Robertson, CC BY-SA 4.0 / obs. 197390480
Symphyotrichum cordifolium, photographed by Yann Kemper
fig. c Yann Kemper, CC0 1.0 / obs. 185287037
Symphyotrichum cordifolium, photographed by Yann Kemper
fig. d Yann Kemper, CC0 1.0 / obs. 185286655
Symphyotrichum cordifolium, photographed by Michael J. Papay
fig. e Michael J. Papay, CC BY 4.0 / obs. 168543810
Symphyotrichum cordifolium, photographed by Michael J. Papay
fig. f Michael J. Papay, CC BY 4.0 / obs. 168544076
Symphyotrichum cordifolium, photographed by Michael J. Papay
fig. g Michael J. Papay, CC BY 4.0 / obs. 168543583
Symphyotrichum cordifolium, photographed by Yann Kemper
fig. h Yann Kemper, CC0 1.0 / obs. 185281042

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

Flowering n = 3,543 observations

Peak flowering in Oct, from 3,543 community-annotated observations worldwide. This is a global aggregate, not a forecast for your garden: the same species flowers on different dates in different hemispheres, and citizen-science records cluster near cities, at weekends, and in spring. Where a species has fewer than 30 annotated records we do not draw this chart at all.

Also published as 42 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

  • Aster cordifolius L.
  • Aster cordifolius subsp. cordifolius
  • Aster cordifolius subsp. laevigatus (Porter) A.G.Jones
  • Aster cordifolius subsp. sagittifolius (Willd.) A.G.Jones
  • Aster cordifolius var. alvearius E.S.Burgess
  • Aster cordifolius var. cordifolius
  • Aster cordifolius var. furbishiae Fernald
  • Aster cordifolius var. glabratus Hollick & Britton
  • Aster cordifolius var. incisus Britton
  • Aster cordifolius var. laevigatus Porter
  • Aster cordifolius var. lanceolatus Porter
  • Aster cordifolius var. moratus Shinners
  • Aster cordifolius var. pedicellatus E.S.Burgess
  • Aster cordifolius var. polycephalus Porter
  • Aster cordifolius var. racemiflorus Fernald
  • Aster cordifolius var. sagittifolius (Willd.) A.G.Jones
  • Aster finkii var. moratus Shinners
  • Aster heterophyllus Willd.
  • Aster lecophyllus Porter
  • Aster lecophyllus var. lecophyllus
  • Aster lowrieanus Porter
  • Aster lowrieanus var. bicknellii Porter
  • Aster lowrieanus var. incisus Porter
  • Aster lowrieanus var. lanceolatus Porter

and 18 more.

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.

We publish what we can source and we say so when we cannot. This page has no care advice, no toxicity claim and no native range, because we do not yet have those from a source we can cite.