Rhododendron canadense(L.) Torr.

Rhodora

WFO wfo-0001245657 Accepted WFO 2026-06 5 photographs CC0 / CC BY

Plate 1 figs. a–e

Rhododendron canadense, photographed by Steven Lamonde
fig. a Steven Lamonde, CC BY 4.0 / 2022-06-05 / obs. 206014060
Rhododendron canadense, photographed by Alexis Godin
fig. b Alexis Godin, CC BY 4.0 / obs. 202451416
Rhododendron canadense, photographed by Lucian Vazquez
fig. c Lucian Vazquez, CC BY 4.0 / obs. 199795031
Rhododendron canadense, photographed by Michael Bunsen
fig. d Michael Bunsen, CC0 1.0 / obs. 203114455
Rhododendron canadense, photographed by Mary E. Macaulay, P.Eng.
fig. e Mary E. Macaulay, P.Eng., CC BY 4.0 / obs. 200132110

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 = 1,513 observations

Peak flowering in May, from 1,513 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 11 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.

  • Azalea canadensis (L.) Kuntze
  • Hochenwartia canadensis (L.) Crantz
  • Rhododendron canadense f. albiflorum (E.L.Rand & Redf.) Rehder
  • Rhododendron canadense f. album Voss.
  • Rhododendron canadense f. canadense
  • Rhododendron canadense f. viridifolium Fernald
  • Rhododendron pulchellum Salisb.
  • Rhododendron rhodora J.F.Gmel.
  • Rhododendron rhodora f. albiflorum E.L.Rand & Redfield
  • Rhodora canadensis L.
  • Rhodora congesta Moench

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.