Giant Sunflower (Helianthus giganteus L.)

↑Range - Expand

Legend	Color
Native
Expanded
Native or Not Present
Introduced or Not Present
Native or Introduced
Native or Expanded

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.

Although this plant occurs somewhere in each of these regions, it may only occur in a small part of some or all of them.

This plant is widely cultivated and has escaped and formed wild populations in several new areas. We marked the Oklahoma populations introduced because they are separated from the rest of the range by a large distance, but the New England populations expanded because they are close to this species' native range.