About Bidens trichosperma (Michx.) Britton
Bidens trichosperma, commonly known as marsh beggar-ticks or marsh tickseed, is a North American flowering plant species belonging to the Asteraceae family. It is native to central Canada, specifically Quebec and Ontario, as well as the eastern and north-central United States. Most of its native range covers the Northeast, Great Lakes, and northern Great Plains regions of the US, with a small number of isolated populations located in the Southeast. This species is an annual herb that grows up to 150 cm (60 inches) tall. It produces many yellow flower heads, which contain both disc florets and ray florets. Bidens trichosperma grows commonly in marshes and along estuaries.