Growing a lilac vine can be overwhelming if you don't keep the plant in check. Hardenbergia can reach 50 feet (15 m.) in length, and it will twine itself around and climb everything in its path. Choose your planting site carefully and make sure it has a large, sturdy structure to climb or plenty of open ground to spread over.
JBarstool said:I guess I don't understand - if you like the Hardenbergia why don't you plant that?
Alternatively:
Mandevilla
Pink Jasmine - may be too common
Believe it or not, some SoCal gardeners are successful with Clematis armandii
luis_pr said:Have you looked at the various bougainvilleas?