Artemesia and Allium. Silver Wormwood or Western Mugwort (Artemisia ludoviciana), native to the western US. Large bushy plant with aromatic leaves with soft silvery undersides and small red-brown flowers. Unlike most other wormwoods that have no culinary uses, mugwort is used to season the stuffings of duck, pork, and game. Medicinal: digestive stimulant, vermifuge, bitter tonic, mild nervine, and menstrual tonic.