This vine can grow to a height of 25 feet or more but can be easily kept at a more desirable height.It can also be trained into a tree form. It has violet-blue, fragrant flowers that bloom as the foliage is also expanding. Individual flowers open gradually from the base of the cluster to the tip. Clusters can be 12 to 18 inches in length and are effective in late May in most seasons. The plant has yellow fall foliage color.