I normally grow mine up an obelisk of some kind. I used to have a willow one bought from a garden centre but this fell to bits at the end of last summer.
This year in the true allotmenting/Geof Hamilton spirit I made a 'new' obelisk from some old trellis panels I had no more use for. They were rectangular but with the aid of a saw and a few nails turned it into a triangular shape. The end result looks good and I hope will last a few years at least.