There are many kinds of chrysanthemums, which can be divided into Xia Ju, Qiuju, Hanju and Sijiju according to the natural flowering period. According to the flower diameter, it can be divided into chrysanthemum, chrysanthemum and Xiao Ju; According to the shape of petals, they can be divided into flat petals, spoon petals, cinnamon petals, tube petals and irregular petals. According to the pattern, it can be divided into wide band type, spoon ball type, sparse tube type, pine needle type, flat laurel type and so on; According to pruning methods and uses, it can be divided into single chrysanthemum (also known as specimen chrysanthemum), multi-headed chrysanthemum, cliff chrysanthemum, big chrysanthemum and grafted chrysanthemum.