Calendula arvensis (field marigold)

Plate 1 figs. a–h · 8 separate observations

Calendula arvensis, photographed by Quentin Groom — fig. a Quentin Groom, CC0 1.0 / 2022-05-16 / obs. 198290708

Calendula arvensis, photographed by scolym — fig. b scolym, CC BY 4.0 / obs. 195879438

Calendula arvensis, photographed by Noa — fig. c Noa, CC BY 4.0 / obs. 191622935

Calendula arvensis, photographed by Chuck Wilson — fig. d Chuck Wilson, CC0 1.0 / obs. 190537786

Calendula arvensis, photographed by Katrin Simon — fig. e Katrin Simon, CC BY 4.0 / obs. 190020912

Calendula arvensis, photographed by Vasileia Sef — fig. f Vasileia Sef, CC BY 4.0 / obs. 189244849

Calendula arvensis, photographed by Rick Mandel — fig. g Rick Mandel, CC BY 4.0 / obs. 189355722

Calendula arvensis, photographed by Tim Johnson — fig. h Tim Johnson, CC BY 4.0 / obs. 188971612

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 1,721 in flower of 1,797 examined

96%

97%

94%

92%

81%

79%

91%

92%

96%

97%

Proportion of examined Calendula arvensis in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	312	325	96%	93% to 98%
Feb	379	393	96%	94% to 98%
Mar	359	370	97%	95% to 98%
Apr	211	224	94%	90% to 97%
May	49	53	92%	82% to 97%
Jun	17	21	81%	60% to 92%
Jul	11	14	79%	52% to 92%
Aug	10	11	91%	62% to 98%
Sep	11	12	92%	65% to 99%
Oct	47	49	96%	86% to 99%
Nov	99	102	97%	92% to 99%
Dec	216	223	97%	94% to 98%

Peak flowering in Nov. Each bar is the share of Calendula arvensis observations in which someone actually recorded the reproductive state and found the plant in flower, not the raw number of flowering records. That distinction matters: people observe plants far more in spring than in winter, so a bare count of flowering records partly measures when people go outside. Dividing by the number examined removes that. 1,721 of 1,797 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. This is still a global aggregate and not a forecast for your garden: the same species flowers on different dates in different hemispheres. Where a species has fewer than 30 flowering records we do not draw this chart at all. Computed from 10.15468/dl.cgje2x.

Also published as 3 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.

Calendula arvensis subsp. arvensis
Calendula arvensis var. echinata Ball
Calendula arvensis var. micrantha Ball

Sourcesevery claim on this page

World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.

We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite. It has no native range either: Kew's checklist does not cover this taxon.