Carelessweed (Cyclachaena xanthiifolia (Nutt.) Fresen.)
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↑Range - Expand
Legend | Color |
Native | |
Expanded | |
Native or Not Present | |
Native or Expanded | |
Expanded or Not Present | |
Native or Expanded or Not Present |
This tentative map is based on our own research. It may have limited data on Canada and/or Mexico, and there is some subjectivity in our assignment of plants as introduced vs. expanded. Read more in this blog post.
This species is sometimes included in bird seed mixes, which has led to its establishment in new areas, including overseas. It favors disturbed areas and grows readily along roadsides and in open bottomlands; land clearing particularly in bottomlands has likely led to its establishment in the east. We mark all populations as expanded even though a few are isolated, because the distances between isolated populations in its new range follow a similar pattern to those in its native range; it consistently becomes more spotty and uncommon towards the south of its range.
↑Links & External Resources
• Cyclachaena xanthiifolia (Carelessweed) | USDA PLANTS Database (About This Site)
• Cyclachaena xanthiifolia | Go Botany (About This Site)
• Marshelder | iNaturalist (About This Site)
• Cyclachaena xanthiifolia | CABI Invasive Species Compendium (About This Site)
• Cyclachaena xanthiifolia | Biota of North America Project (BONAP) (About This Site)
• Cyclachaena xanthiifolia | Flora of North America (About This Site)
• Cyclachaena xanthiifolia (Giant Sumpweed) | Minnesota Wildflowers (About This Site)
• Cyclachaena xanthiifolia (Nutt.) Fresenius (Giant Sumpweed) | Digital Atlas of the Virginia Flora (About This Site)