Our trumpet vine has turned a pale green and no longer produces flowers. It's on a metal fence and is near our pools washout area. It's about 3 years old and 9 feet tall but very sparse.
Trumpet Vine Discoloration and Lack of Blooms
Certified GKH Gardening Expert
Your vine may have been contaminated or effected by a spill of pool chemicals to the soil.
You can try washing the soil with a clean water watering, but be mindful that to much water can kill your vine also.
Here is a link to refresh you on the care requirements.