Large Fortnight Lily
Dietes grandiflora N.E.Br.
- light
- Sun–part
- water
- Medium
- tall
- 1.2 m
- wide
- 30 cm
Iridaceae
Also called Fairy Iris, Butterfly Iris, African Iris, Large Wild Iris
When it flowers
Flowers all year in the tropics.
Read from iNaturalist photographs of it in flower. A month counts at 50% of the best month's flowering share (smoothed over three months) and 10% of its flowering count, from at least 100 flowering observations in the band.
If a child, a pet or anyone may have eaten a plant, contact a doctor or vet straight away, or call the National Poisons Information Centre (AIIMS, New Delhi) on 1800 116 117, free and open 24 hours.
Something wrong with it?About it
- Grows as
- Perennial or rhizomatous geophyteKew's checklist, not yet checked
- Climate
- SubtropicalKew's checklist, not yet checked
- Wild in
- S. & SE. Cape Prov. to KwaZulu-NatalKew's checklist, not yet checked
- Light
- Full sun to part shade (3 h or more)Read from Wikipedia, one source
- Height
- 99 cm to 1.5 mRead from Royal Horticultural Society, one source
- Spread
- 10 cm to 51 cmRead from Royal Horticultural Society, one source
- Water
- Average: moist, well drainedRead from Royal Horticultural Society, one source
- Flowers
- White, yellow, violetRead from Wikipedia, one source
- Coldest it survives
- -5 °C (USDA zone 9a)Read from Royal Horticultural Society, one source
Not known yet: heat, hottest it survives.
In other languages (8)
- Spanish
- Iris sudafricana
- Chinese
- 黑葉鳶尾
- Russian
- Диетес крупноцветковый
- Chinese (China)
- 大花离被鸢尾
- Hebrew
- דיאטס גדול פרחים
- Afrikaans
- Groot wilde-iris
- Hungarian
- Nagyvirágú kaffernőszirom
- Zulu
- Isiqungasehlati
Where this comes from
- iNaturalist, read 2026-10-25, CC0-1.0 (observation counts)
- Wikidata, read 2026-10-25, CC0-1.0
- Kew's checklist, read 2026-10-24, CC-BY-4.0
- Wikipedia, read 2026-10-25, fact, cited
- Royal Horticultural Society, read 2026-10-26, fact, cited
- Wikimedia Commons, read 2026-10-25, CC BY 2.0
- iNaturalist, read 2026-10-25, CC BY-SA
- iNaturalist, read 2026-10-25, CC BY
- iNaturalist, read 2026-10-25, CC BY
- 3D model: Dietes grandiflora (built for Vanagrha) by Vanagrha, own
A fact “checked by a majority of its sources” was settled by a vote of the pages it was read from, not by a person reading it; one marked “one source” rests on that page alone. Anything else not marked checked has not been checked yet. Where nothing is known, the page says so rather than guess.