70 Days to maturity. Brassica rapa var Pekinensis ‘Aichi’. Aichi Chinese Cabbage Heirloom Seeds. Annual. This very old traditional, dento yasai, Chinese cabbage variety is from the Aichi Prefecture of Japan. It produces large barrel-shaped heads with succulent midribs. The tender leaves have a mild, sweet, cabbage flavor and compliment other vegetables when they are prepared cooked, pickled, or fresh. You can rely on this variety for all of your cabbage needs. ~ 9,000 seeds per oz.