Toxic. Some insects are immune to the toxicity and feed mainly on this plant. This is one with a long record of cultivation as a medicinal herb, starting with ancient Greece. During the middle ages, high doses were used to cause abortions. Also used to ward off insects and for preservative aspects; packed into coffins and used at funerals, placed into bedding. Used in mosquito repellent. Aster family. Native to Europe and Asia.
Tansy, Bitter Buttons, Cow Bitter, Mugwort, Golden Buttons (Tanacetum vulgare)