Japanese Rush (Blyxa japonica) is a submerged aquatic herb from Asia, grown mainly in aquariums and wet paludariums. It is demanding and needs strong light, stable water, and nutrient-rich substrate to thrive.
Family
Hydrocharitaceae (Hydrocharit family)
Grows as
Grass
Light
Bright indirect
Water
Keep fully submerged in clean, stable aquarium water; no watering needed in the usual sense.
Soil
Nutrient-rich aquarium substrate or fine gravel with root tabs or plant fertiliser.
Temperature
20–28 °C; protect below 15 °C
How easy
Hard
Native range
Trop. & Subtrop. Asia
Climate
subtropical
About
Blyixa japonica is a species of plant in the family Hydrocharitaceae. It is known as Japanese blyxa or dwarf Asian grass.
How to grow it
The species, along with other members of the genus such as Blyxa aubertii, are common in the aquarium trade. B. japonica is difficult and demanding to grow.
B. japonica var. japonica, B. j. var. alternifolia, and B. j. var. recurvifolia are all found in cultivation.
Where it grows
The species is native to China, Taiwan, Japan, and Papua New Guinea. It has naturalized in Italy. In the wild, the species is found in shallow, stagnant water such as rice paddies.
Text excerpted from the Wikipedia article Blyxa japonica by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.