Dwarf Sedge
Acorus gramineus Aiton
- light
- Sun–part
- water
- Plenty
- tall
- 23 cm
- wide
- 23 cm
Acoraceae
Also called Grassleaf sweet flag, Grassy-Leaved Sweet Flag, Japanese Rush, Japanese Sweet Flag, Japanese Sweetflag
Formerly Acorus humilis, Acorus macrospadiceus, Acorus pusillus, Acorus xiangyeus
When it flowers
Not known yet in the tropics: too few flowering observations to read a season from.
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
- TemperateKew's checklist, not yet checked
- Wild in
- E. Himalaya to Japan and PhilippinesKew's checklist, not yet checked
- Light
- Full sun to part shade (3 h or more)Read from NC State Extension, one source
- Height
- 15 cm to 30 cmRead from NC State Extension, one source
- Spread
- 15 cm to 30 cmRead from NC State Extension, one source
- Water
- Plenty: wet or constantly moistRead from NC State Extension, one source
- Flowers
- Yellow, greenRead from NC State Extension, one source
- Coldest it survives
- -23.3 °C (USDA zone 6a)Read from NC State Extension, one source
Not known yet: heat, hottest it survives.
In other languages (5)
- Chinese
- 菖蒲, 昌陽, 长苞菖蒲
- Simplified Chinese
- 石菖蒲, 菖蒲, 九节菖蒲
- Czech
- puškvorec trávolistý
- Welsh
- gellesgen bêr fain
- Slovenian
- japonski kolmež
Where this comes from
- Wikidata, read 2026-10-25, CC0-1.0
- Kew's checklist, read 2026-10-24, CC-BY-4.0
- NC State Extension, read 2026-10-25, fact, cited
- Wikimedia Commons, read 2026-10-25, CC BY 2.0
- 3D model: Acorus gramineus (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.