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Hemerocallis exaltata is a Perennial up to 1.00 metres tall.
It has edible, medicinal and miscellaneous uses.
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[
E. Asia - Japan, it is only found on Tobishima Island, a small Islet off W. Japan.
Succeeds in most soils[
], including dry ones, preferring a rich moist soil[
]. 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[
This species is hardy to about -15°c[
Hybridizes freely with other members of this genus[
Some roots are short and enlarged, others long with spindle-shaped tuberous ends. The plant forms a compact clump[
], but it also produces rhizomes that tend to spread[
Individual flowers are very short-lived, they open in the morning and wither in the evening[
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[
Leaves and young shoots - cooked[
]. They must be consumed when very young or else they become fibrous[
Flowers and flower buds - raw or cooked[
]. They can be dried and used as a thickener in soups etc. The flower buds contain about 43mg vitamin C per 100g, 983 IU vitamin A and 3.1% protein[
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[
The tough dried foliage is plaited into cord and used for making footwear[
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.