Hawaiian Sunset Vine (Stictocardia beraviensis)
I love this tropical vine, it grows so fast, I swear I turn around once and it is yet again 4 ft longer. Good thing, since it is frost sensitive. In fall I take a cutting for planting the following spring.
The huge leaves are deep green and heart-shaped, and cover the 10 ft long pergola nicely by beginning of summer.
The beautiful flowers are the colors of a tropical sunset :)
The main flowering time starts the end of November through the winter months, but it will bloom with a few flowers on and off throughout the year.
Some info: It is a low maintenance plant, but it is thirsty.
Plant it in full sun or part shade.
Even a young, small plant will flower, so if you don't have the space for it in your yard, keep it in a large planter with a trellis.