Wangyoucao is another name for daylily. Daylily is a plant of the genus Hemerocallis in the Liliaceae family. Its leaves are strip-shaped and lanceolate, and its flowers are yellow, red-yellow, orange-red, black-purple and other colors. The plants are generally tall and have fleshy roots. It takes 40-60 days from daylily flowering to seed maturity, and the flowering and fruiting period is generally from May to September.

Day lily is relatively resistant to barrenness and drought. Its planting does not have high requirements on the soil for planting. It can be planted on the edge of the ground or on a hillside. Daylilies also have relatively suitable light requirements and can be grown together with other plants. It should be noted that the above-ground part of daylily is very intolerant to cold. It is difficult to survive and grow when planted in cold areas. It cannot be planted in soil that is too wet or contains water. Daylily hates moisture.

Day lilies are divided into edible and ornamental types. In the edible type, the plants can be dried and eaten as food. In the ornamental type, day lilies are treasures in flower gardening. Because of their wide variety, they have high It has ornamental value and is relatively easy to grow. It can be seen everywhere in street flower beds. It is a relatively common flower used in courtyards and lawns.