Dietes grandiflora (Fairy Iris)

Plate 1 figs. a–h · 8 separate observations

Dietes grandiflora, photographed by Thomas Mesaglio — fig. a Thomas Mesaglio, CC BY 4.0 / 2021-12-16 / obs. 172546680

Dietes grandiflora, photographed by chrishorak — fig. b chrishorak, CC BY 4.0 / obs. 169984718

Dietes grandiflora, photographed by Margaret Burger — fig. c Margaret Burger, CC BY-SA 4.0 / obs. 125224246

Dietes grandiflora, photographed by Peter Southwood — fig. d Peter Southwood, CC BY-SA 4.0 / obs. 127380633

Dietes grandiflora, photographed by Tony Rebelo — fig. e Tony Rebelo, CC BY-SA 4.0 / obs. 107564750

Dietes grandiflora, photographed by linkie — fig. f linkie, CC BY 4.0 / obs. 97329738

Dietes grandiflora, photographed by Andrew Gillespie — fig. h Andrew Gillespie, CC BY-SA 4.0 / obs. 80236389

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.

Native range 2 botanical countries

Native distribution of Dietes grandiflora, after Kew’s World Checklist of Vascular Plants. Introduced, extinct and doubtful records are excluded, so this is where the plant is from, not everywhere it now grows.

Region	TDWG code	Continent
Cape Provinces	CPP	AFRICA
KwaZulu-Natal	NAT

Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.

Flowering 168 in flower of 173 examined

92%

100%

91%

85%

100%

Proportion of examined Dietes grandiflora in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	12	13	92%	67% to 99%
Feb	20	20	100%	84% to 100%
Mar	10	11	91%	62% to 98%
Apr	17	20	85%	64% to 95%
May	17	17	100%	82% to 100%
Jun	15	15	100%	80% to 100%
Jul	3	3	too few examined
Aug	8	8	100%	68% to 100%
Sep	13	13	100%	77% to 100%
Oct	20	20	100%	84% to 100%
Nov	19	19	100%	83% to 100%
Dec	14	14	100%	78% to 100%

Peak flowering in Feb. Each bar is the share of Dietes grandiflora 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. 168 of 173 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. One month has fewer than 5 examined observations, so no proportion is drawn for it. 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.

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.
Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.

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.