Source: California Invasive Plant Council

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Tanacetum vulgare (common tansy)

Tanacetum vulgare
Tanacetum vulgare
Photo courtesy Joseph DiTomaso

Tanacetum vulgare (common tansy) is a perennial herb (family Asteraceae) found in the Coastal Ranges, Cascade Range and along the north coast of California. Common tansy inhabits riparian areas, forests, and disturbed places, including urban areas, fields, and roadsides. This European native is cultivated as a landscape ornamental and as a medicinal herb. Taken in great quantities, common tansy can be fatally toxic to humans and animals, and some individuals may experience an allergic reaction after handling the foliage. Common tansy reproduces by seed and vegetatively. It is known to produce dense colonies via its extensive creeping root system, especially in riparian areas.

Cal-IPC Inventory rating: Moderate

Cal-IPC Resources on Tanacetum vulgare

Cal-IPC News Articles

  • None for this species.

Cal-IPC Symposium Proceedings

  • None for this species.

Other Resources on Tanacetum vulgare

  • USDA PLANTS database - Federal database with information on identification and distribution, and links to websites in individual states.
  • Jepson Online Interchange for California Flora - Information on taxonomy, biology, and distribution from the UC Berkeley Jepson Herbarium.
  • CalFlora - Distribution information by county based on submitted observations and herbarium specimens.
  • CalPhotos - Images of plants taken mostly in California.