Japanese Mugwort - Yomogi. Heirloom, Non-GMO. Artemisia princeps. Also known as Japanese mugwort, kui hao, yomogi. 45 days to maturity. Perennial. Also known as Japanese mugwort or kui hao, this flavorful herb has green, fuzzy, finely cut leaves. The hardy plant thrives in most climates and is traditionally used in eastern medicine. Prepare fertile, well-drained soil. Sow seeds in spring/summer after last frost in a warm, sunny location. Keep soil moist. Fertilize as needed. The leaves and stems are best when harvested young. Spreads quickly by stolons so contain the growing area to prevent invasiveness. Use in stir-fries, soups and dumpling stuffing. Traditionally prepared in Japan by lightly boiling leaves and pounding them in sweet mochi rice. About 55700 seeds/ounce.