- Tanacetum vulgare is an aromatic, perennial herbaceous plant that can reach up to 5 ft. (1.5 m) in height.
- The leaves of T. vulgare are alternate and sessile or with a short-stalked. The leaves are highly divided and dotted with small glands.
- The yellow, button-like flowers develop in dense flat-topped clusters at the apex of the plant. T. vulgare flowers bloom from August to October.
- The fruits are 5-angled achenes with small glands. Each plant is capable of producing over 50,000 seeds per year.
- Ecological Threat
- T. vulgare invades disturbed areas, ditch banks and riparian areas. It is native to temperate Asia and Europe. T. vulgare can be toxic if animals or people ingest large amounts of it.
Gucker, Corey L. 2009. Tanacetum vulgare, Fire Effects Information System, U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory 
University of Alaska Anchorage, Alaska Natural Heritage Program 
Washington State Noxious Weed Control Board 
Minnesota Department of Natural Resources 
Flora of North America, www.eFloras.org 
California Invasive Plant Council 
USDA NRCS PLANTS 
USDA ARS GRIN 
Images from Bugwood.org