Cirsium arvense(L.) Scop.

creeping thistle

WFO wfo-0000006870 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Cirsium arvense, photographed by Светлана Царахова
fig. a Светлана Царахова, CC0 1.0 / 2022-06-13 / obs. 205757914

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.

Confused withby our own model

These are not lookalikes we guessed at. Each one is a species our identification model genuinely mistook for this plant, and how many times. The error rate is published.

Flowering n = 8,029 observations

Flowering observations of Cirsium arvense by month
MonthObservations
Jan80
Feb74
Mar36
Apr45
May189
Jun1646
Jul2895
Aug1623
Sep933
Oct366
Nov99
Dec43

Peak flowering in Jul, from 8,029 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 73 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.

  • Aplotaxis circioides DC.
  • Breea arvensis (L.) Less.
  • Breea dioica (Cass.) Less.
  • Breea ochrolepidia (Juz.) Soják
  • Breea praealta (Cass.) Less.
  • Breea segeta f. segeta
  • Breea setosa (Willd.) Kitam.
  • Breea setosa (Willd.) Kitam.
  • Carduus arvensis (L.) Robson
  • Carduus arvensis var. arvensis
  • Carduus haemorrhoidalis DC.
  • Carduus neglectus Steud.
  • Carduus serratuloides Neck.
  • Carduus setosus Bab.
  • Cephalonoplos arvense (L.) Fourr.
  • Cephalonoplos arvense var. alpestre Kitam.
  • Cephalonoplos arvensis (L.) Fourr.
  • Cephalonoplos arvensis var. arvensis
  • Cephalonoplos ochrolepidium (Juz.) Juz.
  • Cephalonoplos setosus (Willd.) Kitam.
  • Cirsium albiflorum Kitag.
  • Cirsium argunense DC.
  • Cirsium arvense f. albiflorum Kitag.
  • Cirsium arvense f. arvense

and 49 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.