Whorled Tickseed (Coreopsis verticillata L.)

↑Range - Expand

Legend	Color
Native
Introduced
Present: Various or Uncertain Origin
Native or Not Present
Introduced or Not Present
Native or Introduced
Native or Expanded
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 native to a fairly restricted region mostly in Virginia and the Carolinas, and uncommon and scattered slightly beyond, but it has been widely used in gardening. A number of populations have established from garden escapes, but they are largely separated from the native range. We marked a few of these populations Expanded due to proximity to the native range, but most of them we have marked as Introduced because of gaps much larger than exists within the native range, and because we see little evidence of expansion from the native range itself. We will update this map if we receive new information.