Akebia quinata - Chocolate Vine
Akebia quinata is a robust twining vine that climbs to 20'-40' or spreads as a lacy ground cover. Its dangling flowers are dark purple against graceful blue-green foliage and have a spicy fragrance. This is a frilly vine, excellent for fast cover on trellises and fences, and very easy to grow.
Native to China and Korea, Chocolate Vine is hardy to zone 5, may lose its leaves in northern climates, but the new foliage is purple, very cool. Akebia does best in partial shade, is not fussy about soil and is fairly drought-tolerant.