Datura stramoniumL.

jimsonweed

WFO wfo-0001021374 Accepted WFO 2026-06 6 photographs CC0 / CC BY

Plate 1 figs. a–f

Datura stramonium, photographed by Peter Burka
fig. a Peter Burka, CC BY-SA 4.0 / 2022-06-09 / obs. 204750633

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 = 2,966 observations

Flowering observations of Datura stramonium by month
MonthObservations
Jan95
Feb80
Mar93
Apr174
May97
Jun231
Jul486
Aug686
Sep565
Oct302
Nov108
Dec49

Peak flowering in Aug, from 2,966 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 18 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.

  • Datura bernhardii Lundstrom
  • Datura bertolonii Parl. ex Guss.
  • Datura inermis Juss. ex Jacq.
  • Datura muricata Hort.Berol. ex Godr.
  • Datura stramonium Wall.
  • Datura stramonium Thunb.
  • Datura stramonium Vell.
  • Datura stramonium f. inermis (Juss.) Hupke
  • Datura stramonium f. tatula (L.) Geerinck & É.Walravens
  • Datura stramonium f. tatula (L.) B.Boivin
  • Datura stramonium var. chalybea W.D.J.Koch
  • Datura stramonium var. inermis (Juss.) Fernald
  • Datura stramonium var. tatula (L.) Torr.
  • Datura tatula L.
  • Datura wallichii Dunal
  • Stramonium tatula (L.) Moench
  • Stramonium vulgare Hill
  • Stramonium vulgare 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.