I was given this back in 2008 and it took a couple of years before I got the first bloom, now this blooms every summer. After the last flowers last year I took a pair of clippers and topped off about 2 feet as it had gotten over 6 feet tall and was top heavy and kept falling out of the big pot I have it in.
A very nice blooming. I've had mine for just a few years. It finally grew to the top of the wall and just above. It has its first two flowers now. It's also over 6' tall but the roots are attached to the wall which keeps it growing straight - so far. I'll probaby need to trim it ultimately so I can enjoy the flowers.