My yellow trumpet vines are 2 years old. Next spring will mark their third year in my yard. I have not yet seen a bloom, flower or even a bud. Is there something wrong with it? The vines have grown like crazy, beautiful foliage but no flowers. :(
Yellow Trumpet Vine
Certified GKH Gardening Expert
Your plant is likely not mature enough to bloom.
Also if you over fertilize you may delay blooming even longer. If you have fertilized, do not add more for 1 year.
Check location, Full sun is important for blooming purposes.
Here is a link with more information.