Sweet Wormwood as a Cure for Cancer and many Diseases (wormwood tea) Sweet wormwood is an increasingly popular medicinal plant that is used to treat many diseases and cancers. The main medicinal ingredient is artemisinin. Learn all about this medicinal plant. Sweet wormwood plant The sweet wormwood plant (lat. Artemisia annua), which is originally from North Asia, belongs to the family Asteraceae. This plant has a head inflorescence and is related to bitter wormwood, a plant