Hemerocallis middendorffii is a species from the Russian Far East

Russian Far East

Russian Far East is a term that refers to the Russian part of the Far East, i.e., extreme east parts of Russia, between Lake Baikal in Eastern Siberia and the Pacific Ocean...

, northwest China, Korea, and Japan. It grows in meadows, mountain slopes, open woods, and scrub. It is cultivated in Asia for its edible flowers.

Description

Herbaceous perennial

Perennial plant

A perennial plant or simply perennial is a plant that lives for more than two years. The term is often used to differentiate a plant from shorter lived annuals and biennials. The term is sometimes misused by commercial gardeners or horticulturalists to describe only herbaceous perennials...

with linear arching leaves to 60 cm. Flower scapes 20–90 cm. Flowers 5–6, golden yellow to clear orange, large in a terminal head. Flowers in July for 2–3 weeks and often reblooms in September.

Two varieties are recognized:

• var. middendorfii: To 90 cm. Flowers orange, odorless with elliptic to spathulate tepals. Bracts ovate, 2–2.5 cm. The range of the species.
• var. longibracteata Xiong: 20–35 cm. Flowers yellow, fragrant with lanceolate tepals. Bracts ovate-lanceolate, 3–6 cm. Endemic to China.

Cultivation

Easily cultivated on moist soil in a sunny site, but can tolerate poor soil and partial shade. Propagated by division and by seed. Takes 2–3 years to flower from seed.
Plants prefer a neutral to slightly acid soil and will suffer in very acid or alkaline soils. Generally free from pests and diseases. Hardy to USDA zone 4.