The plant has done well all summer even in heat. Planted last February. It suddenly started to die as if had no water. It started with one plant and then the other plant died. No apparent pests or mites!
I suspect the plant perished in the hot sunshine from sunburn.
Here is a link to refresh you on the care requirements.
stunted the growth of the vine. Its currently growing up rusted metal mesh in a shaded area. Thanks so much for your help!
It looks to be an infection! Likely, this is bacterial. Fungicides, both in the soil and as a foliar spray, will be helpful.
Here are some articles that will help:
I've noticed it's called coral pea, the flowers look like pea flowers and I think it's in family Fabaceae. Could it be a nitrogen fixer like other pea plants? It is prolific and I was wondering if I could cut and drop the leaves for compost.
Yes, they will fix nitrogen! I would say that it would, also, be safe to compost the clipping from the plant.
I bought coral vines and put them on my cement balcony. mostly sun during the day, temps in the 90s lately. I bought plants one week apart. literally overnight each of them withered in turn. I hadn't repotted them; I added a nutrient stick to restore the soil but otherwise left them alone. the third one is doing fine.
They may have needed more water. 90 degrees on a cement balcony could do them in quickly. The photo was blurry so I couldn't get any information from it.