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Heartleaf Four O'Clock (Mirabilis nyctaginea (Michx.) MacMill.)

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Range - Expand

Native 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 species is not widely planted in gardens; it is a weedy plant that spreads readily on its own, and it has expanded its range both eastward and westward, taking advantage of railroads, roadsides, waste areas, fallow fields, and pastures. Eastern populations are extensive and connected with the native range; although western populations are more isolated, we mark this plant expanded everywhere because it shows a clear pattern of spreading aggressively on its own.