Parsley Seeds - Japanese - Mitsuba. Heirloom, Non-GMO. Chryptotaenia japonica. Alt names Japanese honewort, Japanese wild parsley, mitsuba, san ip, san ye quin, selderi jepang, trefoil, ya er chin. 50-60 days to maturity. Perennial. This native Japanese herb is called Japanese hornwort or Japanese wild parsley. It is a popular traditional vegetable, dento yasai, of Japan. ~ 12,500 seeds / oz.