Sweet Autumn Clematis

Sweet autumn clematis flower
Invasive sweet autumn clematis
Big red button that reads High Invasion Risk

Sweet autumn clematis (Clematis terniflora) is a vigorous vine that’s been planted in the South for years. Despite its attractive qualities, sweet autumn clematis has some drawbacks, namely that it’s invasive.

Sweet autumn clematis vine smothering tree
Clematis terniflora vine smothering a tree

The UF/IFAS Assessment of Non-Native Plants in Florida’s Natural Areas lists sweet autumn clematis as a high invasion risk, and is not recommended. UF/IFAS adheres to the most conservative recommendation.

There is a native alternative, Clematis virginiana, but it can be difficult to find. Making it even more difficult is that both the invasive and native vines are often sold under the same common name, sweet autumn clematis. One way to tell the difference is that the native clematis has serrated (jagged) leaf edges, whereas the invasive clematis has smooth leaf edges.

Native clematis has small white star-shaped flowers with obvious yellow stamens.
Native Clematis virginiana has the charming common name Devil’s darning needles. Photo: John D. Byrd, Mississippi State University, Bugwood.org

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