Why doesn't my trumpet vine flower? It is growing wild up a tree and has been there for years but does not flower.
Trumpet Vine Flowering
Certified GKH Gardening Expert
Trumpet vines and wisteria don't bloom for the same reasons. Follow the advice in this article on getting a wisteria to bloom and it will help your trumpet vine bloom: https://www.gardeningknowhow.com/ornamental/vines/wisteria/wisteria-blooming-problems.htm