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Lanceleaf Tickseed (Coreopsis lanceolata L.)

Also known as sand tickseed.

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Range - Expand

LegendColor
Native
Introduced
Expanded
Native or Not Present
Introduced or Not Present
Native or Expanded
Expanded or Not Present
Native or Expanded or Not Present
Expanded or Introduced 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 widely cultivated in gardens and also used in ecological restoration projects, often outside its native range. It is also fairly weedy, spreading aggressively on its own, and it thrives along roadsides and railroads. As a result it has established across the continent. In the east, new populations are expansive and contiguous with its native range. We treat western populations as introduced because they are separated from its eastern range somewhat, but they could perhaps be considered expanded as well.