Bidens
beggar-ticks, bur-marigold, sticktight
7 species
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Bidens amplissimaVancouver Island beggar-ticks
Distribution: Occurring west of the Cascades crest in the northern Puget Trough area in Washington; southwestern British Columbia to King County, Washington.
Habitat: Wetlands, estuaries, pond and stream margins.
Origin: Native
Flowers: July-October
Bidens beckiiBeck's water marigold
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to Oregon, east to Montana, east across Canada to the Great Lakes region and northeastern North America.
Habitat: Lowland ponds and lakes.
Origin: Native
Flowers: July-September
Bidens cernuanodding beggar-ticks, bur-marigold
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Stream banks, pond and lake edges, and other wet places at low elevations.
Origin: Native
Flowers: July-September
Bidens connatapurplestem beggars-ticks, swamp beggar-ticks
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east to Idaho and Montana; native from central North America east to the Atlantic Coast.
Habitat: Marshes, shorelines and other wet, sunny areas.
Origin: Introduced from eastern North America
Flowers: August-September
Bidens frondosaleafy beggar-ticks, devil's pitchfork, sticktight
Distribution: Occurring on both sides of the Cascades crest in Washington; southern British Columbia to California, east across North America to the Atlantic Coast.
Habitat: Shores of ponds, lakes, backwater channels, and other wetland areas at low elevations, often where disturbed.
Origin: Native
Flowers: June-October
Bidens tripartitathree-lobed beggar-ticks
Distribution: Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast where native.
Habitat: Wet places, often where disturbed, primarily at low elevations.
Origin: Introduced from Eurasia and eastern North America
Flowers: August-October
Bidens vulgatatall beggar-ticks, western sticktight
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east across all but the southwestern U.S. to the Atlantic Coast.
Habitat: Streamsides, ponds, lakes, ditches and other moist to wet waste places.
Origin: Introduced from British Columbia
Flowers: July-October