Flaming Trumpets 

Surprise arrival in Dec, 2022. Had planted a small sapling maybe 4 years ago; could not find any trace of it for a long time since it was hidden beneath a red hibiscus bush and another yellow-flowered creeper. One fine December day, we looked up and found a burst of orange under the terrace of Haystack. The Flaming Trumpets had silently flowered. 

https://en.wikipedia.org/wiki/Pyrostegia_venusta