trumpet vines not blooming

Question

Wondering why my 2 trumpet vines are not producing flowers yet. Both are 4 years old or older.  I am in zone 5B- not 8 as previously documented.

Answer 1

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