POND

Plants

Japanese rush
(Acorus gramineus var. decoratus)

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Japanese rush

Japanese rush
(Acorus gramineus var. decoratus)

The Acorus Gramineus is a beautiful plant and very decorative. On top of that, it's a multifunction plant! It finds its place in many configurations. However, it can be tricky.

This sheet will advise you how to successfully maintain this plant!

Names

Scientific name
Acorus gramineus var. decoratus

Common name
Japanese rush
Grass-leaf sweet flag
Dwarf sedge
Japanese sweet flag

Origin

what are his countries of origin?

Origin: China, Japan

Ideal fertilization

how to fertilize this plant?

CO2: 10-40mg/l
Nitrates (NO3): 10-20mg/l
Phosphates (PO4): 0,1-1mg/l
Potassium (K): 5-10mg/l
Iron (Fe): 0,01-0,1mg/l

Group

which group is this plant?

Araceae

Kind

what is the type of plant?

Rhizome

Parameters

What are the Water parameters for the maintenance of this plant?

T°: 15 to 25°C or 59 to 77°F
pH: 5 to 8
Hardness: 2 to 10°dGH

Difficulty

difficulty

Hard

Lighting

what brightness is needed?

Strong

Size

what is the maximum size of the plant?

15 to 30 cm (6 to 12")

Plantation

in which area of the aquarium install this plant?

Everywhere

Growth

how fast does this plant grow?

Slow

Alternative species

Click on the thumbnail to see the card

  • None (for the moment!)

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Presentation

Who is the Japanese rush?

Presentation

Who is the Japanese rush?

The Acorus Gramineus is a very beautiful plant and very decorative. In addition to that, it's a multifunction plant! It can be used in freshwater aquariums, terrariums, paludariums and pond areas (generally, in all very wet soils).

However, it should be noted that it likes much more to be in a semi-submerged situation. This is why it will be particularly adapted to paludariums and ponds. Conversely, in a completely submerged situation, it will not survive long.

These beautiful and long leaves are quite hard. Because of this, this plant is very resistant.

In aquarium, it can be placed in a tray with vegetarian cichlids without risk.

Planting and maintenance

How to plant and maintain the Japanese rush?

Planting and maintenance

How to plant and maintain the Japanese rush?

Given its height, it should be reserved for aquariums and other containers high enough, or in open containers. It is also necessary to provide a good height of substrate to satisfy the rooting rhizomes (count at least 10 cm or 4 inches). Maintenance of this species will require Co2 input in almost all submerged situations.

The Acorus Gramineus will tend to want to emerge out of the aquarium because that is how it is in its natural state (if it remains fully submerged, it will live less time). This is also how you can hope to make it bloom: partly submerged and partly emerged. It flowers then discreetly, usually in June and July. Its flowers are slightly yellow, white or green.

For the basin, the rhizomes of the Acorus stabilize the bank by retaining the earth effectively. You can plant it from March to November in the ground (at least 10 cm deep or 4 inches). Note that this plant does not withstand temperatures below 0°C or 32°F and hot weather.

Farming

How to farm the Japanese rush?

Farming

How to farm the Japanese rush?

Farming occurs by division of the rhizomes, to be done in the spring or fall.

To multiply it, let it grow in containers containing soil and 10 to 20 mm or 0.4 to 0.8 inches of water. A long rhizome will form in 1 or 2 years. Clean it, wash it and let it float in the aquarium or in the pond (in summer). New plants will start to grow from the rhizome after 10 to 30 days. When the leaves are 25 cm or 10 inches long, separate the rhizome and plant the leafy cuttings.

Good To know

Find all additional information!

Good To know

Find all additional information!

Its life is quite short.

There is a variety whose leaves alternate beautifully with green and white.

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