Korean mint (Agastache rugosa) belongs to the Lamiaceae (the Mint family). It is a perennial herb that is distributed throughout Japan, as well as the Korean Peninsula, China and eastern Siberia. This herb grows in mountains, and can reach 40-100 cm in height. The stems are quadrangular, and the leaves are broad-ovate, opposite with short acute tips. The all parts of plant are strong scented. The spikes are borne on the stem apices, and the blue-puple labiate flowers bloom in profusion from August to October. The dried terrestrials are called "Kakko", and used as a herbal medicine for cold or headache.