Perennial herb with semi-lignified stems. Height 60 ~ 150 cm. Stems erect and much branched. Leaves alternate with stalks, the leaves are ovate to broadly lanceolate, sometimes pinnately lobed or deeply lobed, and the leaf margin is coarsely serrated, which varies greatly from variety to variety. The flower heads are solitary or clustered at the top of the stems and branches, and they are fragrant. Tongue-shaped flowers are female flowers, and their shapes, colors and sizes are changeable, and most of them are brightly colored. Tubular flowers are bisexual, densely discoid, mostly yellow or yellow-green. Besides blue, there are yellow, white, red, orange and purple tones. Flowering:10 ~ 65438+February.
Chrysanthemum is one of the top ten traditional famous flowers in China with a long cultivation history. At present, there are more than 20,000 horticultural varieties in the world, and there are about 3,000 in China. There are many varieties and classification methods of chrysanthemum.
chrysanthemum
(1) Classification by flowering period: Xia Ju, flowering period is June-July; Early chrysanthemum blooms from September to 65438+ 10; Autumn chrysanthemum, flowering period10 ~11; Chrysanthemum, flowering period: 65438+ February of the following year to 65438+ 10; Four Seasons Chrysanthemum, also known as Changchun Chrysanthemum, has a long flowering period.
(2) According to the flower diameter, it is divided into chrysanthemum (flower diameter more than 20 cm), middle chrysanthemum (flower diameter 10 ~ 19 cm) and Xiao Ju (flower diameter 10 cm or less).
(3) According to the shape and pattern of petals, they are divided into flat petals (flowers include broadband, lotus, peony, etc. ), spoon petals (flowers are spoons, finches, beehives, rosettes, etc. ), tube petals (flowers are single tube, pine needle and silk hairstyle) and cinnamon petals (flowers are flat laurel, spoon laurel and tube petals).
(4) According to different plastic methods, it can be divided into single chrysanthemum, erect chrysanthemum, large erect chrysanthemum and cliff chrysanthemum.