American Elm (Ulmus americana L.)

↑Range - Expand

Legend	Color
Native
Expanded
Native or Not Present
Introduced or Not Present
Native or Expanded
Expanded or Not Present
Native 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 was widely planted as a street tree, including far west of its native range. It produces wind-dispersed seeds prolifically, and has established in the wild in new regions; we mark some of these introduced, but the Colorado populations are nearly contiguous with the western border of its native range, so we mark them as expanded.