common tansy
Quick Summary
Common tansy (Tanacetum vulgare), also known as garden tansy or golden-buttons, is a species of strong-smelling herb belonging to the aster family. It is native to the north temperate zone and is characterized by its yellow, button-shaped flower heads that lack ray flowers. This perennial plant typically grows with spreading rhizomes and deeply cut leaves.1
While some tansy species are cultivated for traditional medicines or as sources of insecticides, common tansy is considered an invasive species in many regions outside its native range. The leaves and tops of common tansy yield a yellow, poisonous essential oil.12
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