It is said that cultivation of bonsai trees started in Takamatsu during the Edo period, when local people dug up pine trees growing on the coast of the Seto Inland Sea and replanted them in pots. This was the start of bonsai in Takamatsu City. Today, bonsai are one of the representative products of Kagawa prefecture, and the production volume in Kinashi and Kokubunji of pine bonsai are number one in the country. This cultivation technique has spread all over the world, supported by its numerous fans. Among the many types of pine bonsai, Kuro-matsu (black pine), Nishiki-matsu (corkbark pine), Goyo-matsu (Japanese white pine), and Aka-matsu (Japanese red pine) are four representative types. Kuro-matsu is called the king of pine bonsai. The species is named for the black color of its trunk. The trunk, and the long, straight needles project a powerful beauty that has attracted a great number of admirers. Nishiki-matsu is the pine bonsai that launched mass bonsai production. The most interesting feature of this pine is the unique bark on the trunk. The rough, almost frothing quality of the bark fascinates people who see it. Goyo-matsu has needles that come in bunches of five, just like a human hand. The red color of the trunk gives aka-matsu its name. While aka-matsu resembles kuro-matsu in many ways, it has a more delicate silhouette.