I've had this vine in the ground for 2 seasons in Phoenix. When I bought it it was blooming and continued for that summer and fall. Last year it was severely damaged by frost, but came back nicely although it didn't bloom at all. This year there was no frost; it began growing early and produced one bloom, then nothing.
It is growing wildly but shows no signs of any flowering. It is on the east side and gets about 6 hours of sun, with part of it in light shade. Moderately watered and fed at beginning of season with all purpose food.
Any ideas most appreciated.

Hi Jim, to ATP.

How close to the time of the single bloom did you apply the all purpose plant food? I'm wondering if it received more of a nitrogen kick than it needed and decided to grow more mass instead of more blooms.

Wow Chelle, I wondering if you could use nitrogen as sort of a 'birth control' for plants? There are times on heavily root pruned plants that I don't want to bloom and want it to concentrate on growing. Be nice not to keep having to cut off buds.

And yes indeed .. welcome Jim!

from me too Jim; that is one beautiful Queen-of-Sheba Vine (Podranea brycei) I can only imagine how amazing it looks when full of flowers!

I agree with Chelle, the all purpose plant food is probably providing high nitrogen which will help with lush growth but doesn't much help with producing blooms. I'd try a low dose of bloom booster fertilizer (one with a high middle number) to give it a push to produce those lovely flowers. I have the Pink Trumpet Vine (Podranea ricasoliana) growing in a container and will begin feeding it with bloom booster in the next week or so.