Chrysanthemum, a perennial herb of Compositae, is a valuable ornamental flower cultivated by long-term artificial selection, also known as artistic chrysanthemum, with more than a thousand varieties. Chrysanthemum is one of the top ten famous flowers in China. It has been cultivated in China for more than 3000 years. ?

Chrysanthemum plays an important role in the production of cut flowers in the world. It is one of the four largest cut flowers in the world, and its output ranks first among the four cut flowers. Cut flowers should have neat patterns, flower diameter of 7- 12cm, bright colors, no pests and diseases, dark green leaves, straight stems, height above 80cm and long water retention period.

Cut chrysanthemum can be planted underground, with the plant spacing of 12- 13cm and the row spacing of about 15cm. There are 50 plants per square meter, which need to be supported by nets to keep the plants upright. ?

Chrysanthemum can promote and inhibit cultivation. In the season with long sunshine time, from 17 to 9: 00 the next morning, the daily sunshine time is 10 hour. When the bud becomes colored, it will stop shading and bloom early. Controlling the sunshine length per day 14 hour in short sunshine season can control the flower bud differentiation and delay the flower supply time. It is the national flower of Japan together with cherry blossoms.