It makes a bold statement in your garden, it attracts butterflies. 
This is a vigorous climber with attractive purple-black blooms. 
It will reach 6-8’ tall. 
It can be grown on a trellis,fences, obelisks or allowed to ramble through shrubs.
The 1s' i have grow back every year since it's a warm climate but in the colder climates they seed very vigorously .