Trumpet Vine Campsis radicans

Campsis radicans is a dense, vigorous, multi-stemmed, deciduous, woody, clinging vine that attaches itself to structures and climbs by aerial rootlets. It is native to the southeastern U. S. but has naturalized in many northern states. In nature, it can be found in swamps, forests, and thickets. 

Trumpet vine is also commonly known as cow-itch vine because some people experience skin redness and itching after coming in contact with the leaves.

It is easily grown in a wide variety of soils. It is best planted in lean-to average soils with regular moisture in full sun to part shade. Foliage grows well in shade, but plants need good sun for best flowering. It blooms on new growth, so early spring pruning will not affect the flowering. Vines must be grown on sturdy structures because mature plants produce considerable weight. The problem with species plants (Campsis radicans) is usually not how to grow them but how to restrain them, in large part because they sucker profusely from underground runners and freely self-seed, often forming impenetrable colonies in the wild which can choke out many plants that get in their way. To keep it in check, plant it near concrete or an area that you can mow; mowing down the suckers will discourage them.

Diseases, Insects, and Other Plant Problems:

No serious insect or disease problems, although the species is a very aggressive spreader.

Fire Risk: 

This plant has an extreme flammability rating and should not be planted within the defensible space of your home.  Select plants with a low flammability rating for the sites nearest your home. 

VIDEO Created by Elisabeth Meyer for "Annuals, Perennials, Vines, and Groundcovers" a plant identification course offered in partnership with Longwood Gardens.