Acorus gramineus

Japanese rush

Aquarium suitability: restricted
Usage: Semi-emersed plant for open tanks
Growth: very slow

Height: 10 - 50 cm
Width: 10 - 20 cm

Availability [?]: 
  • frequently available commercially

Common names: 
  • Japanese rush
  • Japanese sweet flag
  • Dwarf sedge
  • Grass-leaved sweet flag
  • Grassy-leaved sweet flag

Habit, plant type:

  • rosette
  • rhizome or creeping stem
  • emergent aquatic plant
Botanical name [?]: Ácorus gramíneus Solander

Major group (unranked): Seed plants: Flowering plants (Angiosperms)
Order: Acorales
Family: Acoraceae
Genus: Acorus


Various varieties of Japanese sweet flag, Acorus gramineus, have been available in the aquarium trade for many years. This plant is unsuitable for long-term submersed cultivation, though.

- To be continued -

References and further reading:
  1. follows
Temperature tolerance 4 to 28 °C
Optimum temperature 18 to 23 °C
Carbonate hardness 0 to 14 °dKH
pH value 5 to 7.5 
Carbon dioxide (CO2) 10 to 40 mg/l

Growth: very slow

Propagation: Splitting, cutting off daughter plants

Can grow emersed?: yes

Suited for outdoor cultivation / ponds: yes

Winter hardiness: half-hardy in Germany

There is no detailled information for cultivating this plant yet.
There are no further design information for this plant yet.
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Trading possible?
This plant is a part of the following tanks:
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TODO Acorus gramineus is also known as Japanese rush, Japanese sweet flag, Dwarf sedge, Grass-leaved sweet flag and Grassy-leaved sweet flag.

Wasserpflanzen sind ein fester Bestandteil der meisten Aquarien. Beim Aquascaping, dem Naturaquarium, Biotop-Aquarium oder dem Gesellschaftsaquarium sind Wasserpflanzen nicht nur für die Wasserqualität entscheidend, sondern sorgen auch stets für eine optische Aufwertung des Aquariums.