Posted: 09/05/2014 at 13:14
To some extent, the colour or variety you choose will depend on what you like best.
There are so many varieties that it's hard to advise you.
I would first have a look at the link above, to get some idea of what type you'd like.
Some are free climbers, some are not and need to be tied. Some need pruning back in February, some not at all.
Some flower earlier in the year than others.
Perhaps on a 6ft obelisk, a free climbing variety that doesn't need cutting hard back, but just a gentle prune, may work best for you.
Or you could try mixing a montana type type that requires no pruning as such, with another variety that flowers later on and twines over tye earlier flowering one - just to have a bit more interest for longer.