The Spray mum (Chrysanthemum x morifolium) belongs to Asteraceae (the Aster family). It is a group of garden varieties of "Chrysanthemum" produced in the United States in the 1940s. It was introduced to Japan in the 1970s and 1980s. It is characterized by the fact that 5 to 10 side branches extend from the main stem to form a conical plant figure, and many flower heads bloom. There are pompon blooms, anemone blooms, spider blooms, semi-double blooms, etc., and there are abundant flower colors.