Disease on Red Trumpet Vine

Question

Last year I noticed withering leaves and graying flowers. I couldn’t decide if it was a fungal or insect problem. I pruned well and sprayed with fungicide. A month later it seemed the same so I sprayed with an
insecticide. Now that it is about to bloom the same problem exists. What to do??

Answer 1

This doesn't sound like insect damage. You might want to consider taking samples of both the leaves and blooms/buds to your area agricultural extension service office for advice.