Chrysanthemum, in plant taxonomy, is a perennial herb of Compositae and chrysanthemum. According to the cultivation form, it can be divided into multiple chrysanthemum, sole chrysanthemum, dahlia, cliff chrysanthemum, Yiju, desk chrysanthemum and other cultivation types; according to the appearance of petals, it can be divided into garden hug, back hug, reverse hug, random hug, open heart hug, flying noon hug and other cultivation types. Different kinds of chrysanthemums are named by different varieties.
Chrysanthemum is the third of the ten famous flowers in China, one of the four gentlemen (Mei Lan Zhu Ju) in the flowers, and one of the four cut flowers (chrysanthemum, rose, carnation, gladiolus) in the world, with the highest output. Because chrysanthemum has the character of cold and proud snow, there is Tao Yuanming's famous sentence "picking Chrysanthemum under the eastern fence, leisurely seeing Nanshan". Chinese people have the custom of enjoying chrysanthemum and drinking chrysanthemum wine on the Double Ninth Festival. "When it comes to Chongyang day, chrysanthemums will come." In ancient myths and legends, chrysanthemum is also given the meaning of auspiciousness and longevity.
Chrysanthemum is a precious ornamental flower cultivated by long-term artificial selection. Around the 8th century AD, chrysanthemum as an ornamental flower was spread from China to Japan. In the late 17th century, Dutch merchants introduced Chinese chrysanthemums into Europe, France in the 18th century, and North America in the middle of the 19th century. Since then, Chinese chrysanthemums have spread all over the world.