Should I grow trumpet vine? Is it invasive?

Answer

Trumpet vine (Campis radicans) is a fast growing, woody vine with dramatic flowers. Hummingbirds are especially attracted to trumpet vine flowers. It is hardy in USDA zone 4-9. It will grow well in part shade but sun is necessary for good flower production.  Trumpet vine tolerates most soil conditions and does not need to be fertilized because of its vigorous growth. It can be grown against a wall  or on a trellis or pergola. Because of their strong growth characteristics trumpet vines need to be severely pruned every year. This is best done in late winter or early spring. This will not affect flower production as trumpet vines flower on new growth.

This plant is native to the  Eastern and Central United States including New York state, and not considered invasive in the state or the Hudson Valley. It is, however, an aggressive grower that takes a great deal of management to control. The reason you may not wish to grow this plant is its assertive nature and the time commitment to keep it from spreading rapidly through suckering and seed drop. It can easily take over a garden and become an unwelcome intruder on your neighbor's property. It can choke out many plants that get in its way.

Don't allow it to spread as much as it wants to.  It should be severely pruned back in early spring or fall to just a few buds, and you should deadhead the pods before the seeds can drop.  Pull up the new shoots from the runners whenever you see them. Do not consider planting it on the border of your property where it can become an unwelcome menace for neighbors. When grown in a lawn, regular mowing will help to contain its spread. 

Courtesy of NYBG Plant Information Service

  • Last Updated Sep 05, 2025
  • Views 18507
  • Answered By Plant Information

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