Leonurus artemesia syn Leonurus japonica. 3-ft attractive perennial with whorls of delicate purple flowers. Space a foot apart. Used in Asia for many health problems, including to help lower blood pressure. One of the 50 fundamental herbs in Chinese medicine. Helps to relieve PMS symptoms as well as other gynecological symptoms. Considered number one herb in Chinese medicine for the treatment of infertility. Easy to grow from seed.