Like so many popular spring bulbs, flame vine, Pyrostegia venusta, may not delay bloom until spring as it should. Within the warmly sunny situations that it prefers, it is more likely to bloom during winter. It may wait until the end of winter or even the beginning of spring only where winter weather is cooler. Bloom is already finishing where winters are milder.
Bloom is spectacular, particularly while not much else blooms so copiously. It is about as profuse as bougainvillea bloom, but earlier. It is about as vibrant orange as poppy bloom, but earlier. With warmth, sunlight and regular watering, flame vine performs very reliably. Perhaps it should not be as uncommon as it is. Yellow blooming flame vine is quite rare.
Although a bit tamer than related red trumpet vine and royal trumpet vine, flame vine may be uncommon partly because it is so vigorous. If pruned to the ground after bloom, it can reach second story eaves to bloom there for the next season. It can grow absurdly high if it grows into trees. Its evergreen foliar tendrils can cling to and damage painted surfaces.
Tony Tomeo 
I believe they grow really well here. We also have a Mexican Flame Vine.
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They like warmth. This particular specimen is on the south side of Brent’s home, coincidentally on a prosthetic chimney. (Yes, it looks like a chimney on the outside, but lacks a fireplace, or anything, on the inside.) Yet, even with only mild warmth, I believe that this vine blooms better than related red trumpet vine and lavender trumpet vine. I really do not know why it is so rare. I see only a few in Southern California, and I know of only one near here. Mexican flame vine is not related. I have seen it only in pictures.
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Glorious colour – shame I can only enjoy virtually!
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It is also a shame that most of the color is on the roof where no one can see it. The plumeria now shade the prosthetic chimney that the vine climbs, so bloom is inhibited down where it would be more visible.
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