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Sneezeweed (Helenium amarum (Raf.) H. Rock)

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Range - Expand

Introduced or Not Present
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 plant is occasionally planted in gardens, and can escape, but it also is weedy and spreads readily on its own. Its preference for disturbed habitats has allowed it to expand through roadsides, along railroads, and in pastureland. We mark the new portions of its range expanded because they are largely contiguous with its native range, except in California where there is a distant, isolated population which we mark introduced.