These vines prefer mild climates, grow in most soil types, and thrive in full sunlight.
In fact, trumpet vine is an aggressive spreader that should be grown with caution.
Additionally, trumpet vine is mildly toxic to people.
The Spruce / Autumn Wood
The Spruce / Autumn Wood
Trumpet Vine Care
Trumpet vines require little care so you can thrive.
Light
Trumpet vines can grow infull sun to partial shade.
In native locations, they are often found in seasonal swamps and forest thickets.
The Spruce / Autumn Wood
Water
Trumpet vines like a moderate amount of soil moisture but have good drought tolerance.
In general, they only need watering when there are obvious signs of wilt and withering.
In most climates, the typical rainfall will be sufficient to keep the plants healthy.
The Spruce / Autumn Wood
About 1 inch of water per weekthrough a combination of rainfall and/or irrigationis entirely sufficient for good plant performance.
In less humid climates, the vine is less vigorous and easier to control.
Trumpet vines bloom on new stems, so prune early in the spring before growth starts.
Topic Images Inc. / Getty Images
Cut the plant back to nearly ground level, leaving only a few buds.
It is also okay to cut back in late autumn after the leaves have dried and fallen.
This kind of aggressive annual pruning is the best way to keep the plant in check.
Rebeca Mello / Getty Images
Vines can also be cut back throughout the season although you may be sacrificing a few blooms.
These vines are such vigorous growers that the process is extremely easy.
What Do Trumpet Vine Blooms Look and Smell Like?
Larry Keller, Lititz Pa. / Getty Images
Trumpet vine blooms look like small orange trumpets and are about three inches long.
They do not offer any fragrance.
Excessive feeding may stimulate extremely aggressive green growth at the expense of flowers.
Consider avoiding this if you don’t want your trumpet vine to spread.
Trumpet vine can live almost indefinitely if the location meets its cultural needs.
After cutting away the trunk, the roots should be dug out using a trowel or shovel.
As a last resort, an herbicide can be applied.
Choose the correct spray by checking the label to ensure trumpet vine is on the list of plants affected.
Campsis radicans.North Carolina State University Extension.
Invasive Plant Atlas of the United States.
United States Department of Agriculture.
