Thunbergia grandiflora, commonly called blue trumpet vine, clock vine, sky vine or sky flower, is a woody-stemmed, evergreen, tropical, twining climber. It grows to 15-30 long in frost free areas. The tubular flowers of the skyflower vine are a little deeper, about 3 in (7.6 cm) long, and are borne in drooping clusters. The most commonly seen varieties are sky blue to light violet although there is a white flowered type as well. Flowers bloom year round Leaves are leathery and have a distinctive elongated heart shape.
Thunbergia favors quite rich, organic soil and requires structural support. It may need to be cut back often to control direction or size or allow it to roam free if you have the space
Ideal to cover a fence or pergola.