Kiriyama Tea Gardens occupy an area about 200,000 square meters, which is about five times the size of Tokyo Dome. Tosa tea is cultivated with good water and a rich natural environment and boasts a higher quality than teas cultivated in other areas of Japan. About 80 percent of the tea is shipped to prefectures including Shizuoka Prefecture, and the tea has enduring popularity as a tea used for blending with premium teas. Kiriyama tea has the property that the tea picked in spring and kept in cold storage will mature after the summer period. The depth of flavor that comes from the aroma and the mild, sweet taste that only Kiriyama tea can provide is one reason behind its popularity.