Thunbergia grandiflora - The Blue Sky Vine is an exceptionally popular tropical vine that is easy, reliable, has excellent flower power, and can be grown as a die-back perennial in zones 8-9 if established early in the growing season. It may remain evergreen in warm frost-free tropical climates where it can flower nearly year-round. 

The Blue Sky Vine is a heat and sun-loving twining vine suitable for metal fences, smaller arbors, and medium to large trellises or other sturdy supports. Provide a well-drained, moderately fertile soil. The Blue Sky Vine can also be enjoyed as an easy and low-maintenance container plant.