Nasturtium officinaleR.Br.

watercress

WFO wfo-0000380323 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Nasturtium officinale, photographed by Zakqary Roy
fig. a Zakqary Roy, CC BY 4.0 / 2022-06-10 / obs. 204957100
Nasturtium officinale, photographed by Michael Warner
fig. b Michael Warner, CC BY 4.0 / obs. 204786250
Nasturtium officinale, photographed by Andrew Tree
fig. c Andrew Tree, CC BY 4.0 / obs. 203236672
Nasturtium officinale, photographed by Andrew Tree
fig. d Andrew Tree, CC BY 4.0 / obs. 202999310
Nasturtium officinale, photographed by Lee
fig. e Lee, CC BY 4.0 / obs. 201038463
Nasturtium officinale, photographed by David Delon
fig. f David Delon, CC BY 4.0 / obs. 203228518
Nasturtium officinale, photographed by David Delon
fig. g David Delon, CC BY 4.0 / obs. 198909140
Nasturtium officinale, photographed by Quentin Groom
fig. h Quentin Groom, CC0 1.0 / obs. 197842641

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 = 1,761 observations

Peak flowering in May, from 1,761 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 34 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.

  • Arabis nasturtium [Clairv.]
  • Baeumerta nasturtium G.Gaertn., B.Mey. & Scherb.
  • Baeumerta nasturtium-aquaticum (L.) Hayek
  • Cardamine aquatica (Garsault) Nieuwl.
  • Cardamine fontana Lam.
  • Cardamine nasturtium Kuntze
  • Cardamine nasturtium-aquaticum Borbás
  • Cardaminum nasturtium Moench
  • Crucifera fontana E.H.L.Krause
  • Dictyosperma olgae Regel
  • Nasturtium alexandrinum Crantz
  • Nasturtium aquaticum Wahlenb.
  • Nasturtium flexuosum Seub.
  • Nasturtium fontanum Asch.
  • Nasturtium fontanum var. longisiliquum Irmisch
  • Nasturtium nasturtium-aquaticum H.Karst.
  • Nasturtium officinale subsp. rotundifolium A.P.Khokhr.
  • Nasturtium officinale var. officinale
  • Nasturtium parvifolium (Peterm.) H.W.Howard & Manton
  • Nasturtium siifolium Phil.
  • Nasturtium siifolium Rchb.
  • Pirea olgae (Regel) T.Durand ex Prantl
  • Radicula nasturtium Druce
  • Radicula nasturtium (Thunb.) Cav.

and 10 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.