Carnation (Dianthus caryophyllus) belongs to the Caryophyllaceae (the Carnation family). It is a perennial herb that is native to the coastal areas of the Mediterranean Sea, west and south France. This herb has been cultivated from the ancient days. It was introduced into Japan via Holland in Edo Era (about 250 years ago). The original species is single blossoms, and the cultivars are mainly double flower. The flower colors are veried, such as red, pink, magenta, yellow or white. The custom of decorating carnations on Mother's day was begun at the start of 20th century.