Malvaceae
Flower of an hour
Hibiscus trionum
- Family
- Malvaceae
- Genus
- Hibiscus
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Common names
By language (28)
- Afrikaans
- Terblansbossie
- Arabic
- خطمي إفريقي
- Armenian
- Բամբակաղբեր ուռած
- arz
- الكركديه تريونوم
- Azerbaijani
- Üçlü hibiskus
- Chinese
- 野西瓜苗, 小秋葵, 火炮草, 灯笼花, 野西瓜苗子, 香铃草, 黑芝麻
- Czech
- Ibišek trojdílný
- Dutch
- Drie-urenbloem, Uurbloem
- English
- Flower of an hour, Flower-of-an-Hour, Bladder hibiscus, Bladder ketmia, Bladder weed, Flower-of-the-hour, Modesty, Puarangi
- Estonian
- Kolmetine hibisk
- Finnish
- Ajannäyttäjä, Ajannäyttäjähibiskus
- German
- Stundenblume
- hsb
- Žołta hodźinka
- Hungarian
- Varjúmák, Dinnyefű
- Korean
- 수박풀
- Macedonian
- Меуреста слезовина
- Malayalam
- ഹൈബിസ്കസ് ട്രൈയോണം
- Māori
- Puarangi
- Norwegian Bokmål
- Timerose
- Persian
- ختمی سه رنگ
- Portuguese
- Flor-de-todas-as-horas
- Romanian
- Zămoșiță
- Russian
- Гибискус тройчатый, Гибискус северный
- Slovenian
- Navadni oslez
- Swedish
- Timvisare
- Tamil
- ஒருமணி நேரப் பூ
- Uzbek
- Boʻritaroq
- Welsh
- Cetmia chwysigennog
Synonyms
- Abelmoschus collinsianus Wood
- Hibiscus africanus Mill.
- Hibiscus armeniacus Bouché
- Hibiscus collinsianus Nutt. ex Torr. & A.Gray
- Hibiscus cuneifolius Garcke
- Hibiscus dissectus Wall.
- Hibiscus hastifolius E.Mey. ex Harv. & Sond.
- Hibiscus hispidus Mill.
- Hibiscus humboldtii Schrank ex Colla
- Hibiscus humboldtii hort. ex Fisch. & C.A.Mey.
- Hibiscus marchallianus hort. ex Fisch. & Mey
- Hibiscus pallidus Raf. ex S.Watson
- Hibiscus physodes E.Mey. ex Harv. & Sond.
- Hibiscus ternatus Cav.
- Hibiscus trionicus St.-Lag.
- Hibiscus trionum var. cordifolius DC.
- Hibiscus trionum var. ternatus DC.
- Hibiscus trionum var. vesicarius (Cav.) Hochr.
- Hibiscus trionum var. vesicarius (Cav.) Hochr.
- Hibiscus uniflorus E.Mey. ex Harv. & Sond.
- Hibiscus vesicarius Cav.
- Ketmia trionum (L.) Scop.
- Laguna ternata Willd.
- Trionum annuum Medik.
- Trionum cordifolium Moench
- Trionum diffusum Moench
- Trionum frutescens Medik.
- Trionum trionum Wooton & Standl.
Flowers
- In flower
- July to October (from 1,282 flowering iNaturalist observations worldwide)
Characteristics
- Growth habit
- Forb/herb
- Lifespan
- Annual
- In the US and Canada
- Canada: introduced, Lower 48 states: introduced
Photos
Photo: Thomas Koffel, CC BY 4.0, from iNaturalist 
Photo: No machine-readable author provided. Bogdan assumed, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Tony Rebelo, CC BY-SA 4.0, from iNaturalist 
Photo: Fabio Alessandro Locati, CC BY-SA 3.0, from Wikimedia Commons 
Photo: takalani.nelu, CC BY-SA 4.0, from Pl@ntNet via GBIF 
Photo: Matthew Fainman, CC BY 4.0, from iNaturalist 
Photo: Fabio Alessandro Locati, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Theodore Weilbach, CC BY-SA 4.0, from Pl@ntNet via GBIF 
Photo: Henry de Lange, CC BY 4.0, from iNaturalist 
Photo: Joe Dillon, CC BY 4.0, from iNaturalist 
Photo: la la means I love you, CC BY-SA 3.0, from Wikimedia Commons 
Photo: takalani.nelu, CC BY-SA 4.0, from Pl@ntNet via GBIF
More in Hibiscus
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- Rose of SharonHibiscus syriacusMalvaceae
- Dixie rosemallowHibiscus mutabilisMalvaceae
- Fringed rosemallowHibiscus schizopetalusMalvaceae
- MahoeHibiscus elatusMalvaceae
- Scarlet rosemallowHibiscus coccineusMalvaceae
- MandrinetteHibiscus fragilisMalvaceae
- Swamp rosemallowHibiscus grandiflorusMalvaceae
- Philip Island hibiscusHibiscus insularisMalvaceae
- Largeleaf rosemallowHibiscus macrophyllusMalvaceae
- Red Kauai rosemallowHibiscus clayiMalvaceae
- PalefaceHibiscus denudatusMalvaceae
Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.