Horseweed is a common name for several plants and may refer to: * Cichorium intybus * Conyza * Erigeron canadensis, native to North America and Central America * Lactuca canadensis, native to North America * LaenneciaThis page is an index of articles on plant species (or higher taxonomic groups) with the same common name (vernacular name). If an internal link led you here, you may wish to edit the linking article so that it links directly to the intended article.