The plant grows up to 0.5 m high. Its wide yellow flowers is scentless. It is a hermaphroditic plant, and is pollinated by insects such as honey bees. Flowers of this genus typically last no more than 24 hours, hence their name.
Hemerocallis is native to Eurasia, including China, Korea, and Japan, and this genus is popular worldwide because of the showy flowers and hardiness of many kinds.
National Botanical garden of Belgium.