Herb latin name: Iris japonica

Family: Iridaceae (Iris Family)

Medicinal use of Iris japonica:

The rhizome is used in the treatment of injuries. A decoction of the plant is used in the treatment of bronchitis, internal injuries, rheumatism and swellings.

Description of the plant:


60 cm
(2 feet)


Habitat of the herb:

Woodland hills, grassy and rocky slopes and among rocks by streams.

Edible parts of Iris japonica:

Root - the source of an edible starch. Some caution is advised, see the notes above on toxicity.

Other uses of the herb:

Plants can be grown for ground cover when planted about 45cm apart each way.

Propagation of Iris japonica:

Seed - best sown as soon as it is ripe in a cold frame. Stored seed should be sown as early in the year as possible in a cold frame. Prick out the seedlings into individual pots when they are large enough to handle and grow them on in the greenhouse or cold frame for their first year. Plant out into their permanent positions in late spring or early summer. Division, best done after flowering in July/August. Very easy, larger clumps can be replanted direct into their permanent positions, though it is best to pot up smaller clumps and grow them on in a cold frame until they are rooting well. Plant them out in the spring.

Cultivation of the herb:

Woodland hills, grassy and rocky slopes and among rocks by streams.

Known hazards of Iris japonica:

Many plants in this genus are thought to be poisonous if ingested, so caution is advised. The roots are especially likely to be toxic. Plants can cause skin irritations and allergies in some people.

Plant information taken from the Plants For A Future.