Tanacetum
tansy
4 species
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Tanacetum balsamitacostmary
Distribution: Occurring scattered locations on both sides of the Cascades crest in Washington; southern British Columbia to California, east across much of North America to the Atlantic Coast.
Habitat: Roadsides and other waste places.
Origin: Introduced from Asia
Flowers: August-September
Growth Duration: perennial
Tanacetum bipinnatumcamphor tansy, dune tansy
Distribution: Occurring west of the Cascades crest along the coast of Washington; Alaska to California, east across Canada to the Great Lakes region and northeastern North America.
Habitat: Sand dunes along the coast.
Origin: Native
Flowers: May-September
Growth Duration: perennial
Tanacetum partheniumfeatherfew, feverfew
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; British Columbia to Nevada, east to the Rocky Mountains.
Habitat: Roadsides, fields, wastelots, and other distrubed areas at low elevations.
Origin: Introduced from Europe
Flowers: June-November
Growth Duration: perennial
Tanacetum vulgarecommon tansy
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Roadsides, fields, shorelines, wastelots, and other disturbed, open areas at low to middle elevations.
Origin: Introduced from Europe
Flowers: July-October
Growth Duration: perennial