Mugwort (Artemisia vulgaris). Mugwort, also known as wild wormwood and witches herb, has traditionally been used as a medicinal herb. It is preparted as an infusion, powder, essence or tincture and is thought to promote menstruation, stimulate appetite, kill intestinal worms and act as a sedative. It is also used in traditional Chinese medicine to correct breech presentations in pregnant women. Photographed at Dilston Physic Garden, UK.