The time to cook the day lily is related to the day lily itself. If it is fresh, it can be boiled in water for two minutes. But if the day lily is dry, it needs to be soaked first, and then boiled in water for 3 ~ 5 minutes before it can be completely cooked. Daylily can be used as a side dish in hot pot and maocai. Day lily, commonly known as day lily, lemon day lily and day lily, is a perennial herb of Liliaceae. Daylily plants are generally tall, with fleshy roots, spindle-shaped swelling in the middle and lower parts, different scape lengths, short pedicels, many flowers, pale yellow perianth, orange red, deep purple, obtuse triangular oval capsule, barren and drought-resistant, and lax requirements on soil, which can be cultivated in geography or hillside. The flowering and fruiting period is from May to September. It is cultivated all over China, mostly in the south of Qinling Mountains, Hunan, Jiangsu, Zhejiang and other places. Day lily is an important cash crop. The dried flowers are processed into dried vegetables, that is, day lily or day lily, which are exported at home and abroad, and have the effects of invigorating stomach, diuresis and detumescence. Roots can make wine; Leaves can be used to make paper and weave straw mats; The dried flower buds can be used as paper, coal and fuel.