This species is treated as a synonym of Hemerocallis citrina in some works, such as the Flora of China[].
Hemerocallis is a very difficult genus taxonomically, with no overall concensus amongst botanists as to how many distinct species there are and the delineation between them. The genus as a whole needs a comprehensive revision. We are trying to follow the most recent thinking for each species, though it is inevitable that a number of species we have included in the genus will have to be amended as and when a comprehensive new treatment is published.

Common Name:

General Information

Hemerocallis coreana is a perennial plant that can grow up to 0.40 metres tall.
The plant is harvested from the wild for local use as a food, medicine and source of materials.

Known Hazards

Large quantities of the leaves are said to be hallucinogenic. Blanching the leaves removes this hallucinatory component[]. (This report does not make clear what it means by blanching, it could be excluding light from the growing shoots or immersing in boiling water[].)

Botanical References

,

Range

E. Asia - eastern China (Shandong), southern Japan, southwestern Korea.

Habitat

Forest margins, grassy fields and slopes along valleys, from near sea level to 2000 metres[].

Properties

Edibility Rating
Medicinal Rating
Other Uses Rating
Habit	Perennial
Height	0.40 m
Pollinators	Insects
Cultivation Status	Wild

Cultivation Details

Succeeds in most soils[], including dry ones, preferring a rich moist soil and a sunny position[]. Grows well in heavy clay soils. Succeeding in sun or shade, it produces more flowers in a sunny position though these flowers can be shorter-lived in very sunny positions[]. Succeeds in short grass if the soil is moist[]. Prefers a pH between 6 and 7[].
According to the Flora of China, this species is no more than a synonym for H. citrina[]. It is, however, seen as a distinct species in other treatments and so is maintained here as a separate species[].
This species has not yet been grown in Europe (1994) so its hardiness is not known[].
Hybridizes freely with other members of this genus[].
Individual flowers only live for one day, however there are 50 - 80 flowers produced on each scape[].
Plants take a year or two to become established after being moved[].
Plants seem to be immune to the predations of rabbits[].
The plants are very susceptible to slug and snail damage, the young growth in spring is especially at risk[].

Edible Uses

Leaves and young shoots - cooked[]. They must be consumed when very young or else they become fibrous[].
Flowers and flower buds - raw or cooked[]. The flowers can be up to 12cm long[]. The flower buds contain about 43mg vitamin C per 100g, 983 IU vitamin A and 3.1% protein[].
If this species has swollen roots then they can be eaten raw or cooked.

Medicinal

The juice of the roots is an effective antidote in cases of arsenic poisoning[].
A tea made from the boiled roots is used as a diuretic[].

Other Uses

The tough dried foliage is plaited into cord and used for making footwear[].

Propagation

Seed - sow in the middle of spring in a greenhouse. Germination is usually fairly rapid and good. Prick out the seedlings into individual pots when they are large enough to handle. Grow the plants on for their first winter in a greenhouse and plant out in late spring[].
Division in spring or after flowering in late summer or autumn[]. Division is very quick and easy, succeeding at almost any time of the year[]. 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.