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Acorus Gramineus (Japanese Sweet Flag)

Acorus Gramineus (Japanese Sweet Flag)

What is Acorus Gramineus?

Acorus Gramineus is a plant species that belongs to Acorus Genus and Acoraceae family. The species in Acoraceae family are called Sweet Flag.

The common name of Acorus Gramineus is Japanese Sweet Flag. It is also known as Dwarf Sweet Flag and Grass Leaf Sweet Flag. The plant is native to Japan. It is also found in some parts of Korea.

Note: It is sometimes referred as dwarf sedge, but this name is common for Carex Humilis and Carex Pumila.

Quick Review

Botanical Name Acorus Gramineus
Common Name Grass-Leaf Sweet Flag & Japanese sweet flag
Other Names Slender sweet-flag, Dwarf sweet flag
Major Group Monocot
Family Acoraceae
Genus Acorus
Species A. Gramineus
Legal Status None Known
Known Hazards None known

Plant Taxonomy

Kingdom Plantae
Subkingdom Viridiplantae
Infrakingdom Streptophyta (land plants)
Super Division Embryophyta
Division Tracheophyta (tracheophytes or vascular plants)
Sub Division Spermatophytina (spermatophytes or seed plants)
Class Magnoliopsida
Super Order Lilianae (monocots or monocotyledons)
Order Acorales
Family Acoraceae (Sweet flag)
Genus Acorus L
Species Acorus gramineus

Plant Description

Type of Plant Shrub, perennial
Native Range (Geographic Distribution) Example: Japan & Korea
Height (grows up to) 30 cm
Spread 25 to 30 cm
Habitat (a type of environment)


Shallow water & Wetlands, moist
Leaves Slightly curved leaves
Flowers It only yields flowers when it is partially submerged in water. Flowers are generally of green color. Flowers heads are small.
Bloom Time Early to Mid Summer
Sun It grows in partial shade or full sun.
Soil Type It prefers moist soil, wet clay.
Water Require huge water to grow, so it grows in ponds.
Maintenance Low
Growing Season Summers
Propagation & Cultivation By rhizome

Medicinal Uses of Acorus Gramineus

In traditional medicines, Acorus Gramineus (Japanese Sweet Flag) is used in speech disorders. It is a common home remedy for stuttering. Its dried rhizome powder is mixed in honey and given to a person with stuttering.

Moreover, all plants of sweet flags are moderately sedative and used to treat mental disorders. It has aromatic and expectorant characteristics for which it is used for a productive cough. The analgesic property of Japanese Sweet Flag roots helps to alleviate pain and reduce inflammation. These species are also used in the management of epilepsy and convulsions.

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