We have a south facing wall on the side of the house which is very ugly from where a conservatory has previously been knocked down and the doorways blocked up with breeze block. I intend to put a trellis on the wall and grow a climber up it. It's a concrete base underneath so whatever plant we choose will have to go in to a planter. I'm thinking a clematis will be pretty. We need something fairly fast growing to cover the wall but appreciate it will also need pruning then to protect the building. What will be happy in a planter and on a south facing wall? Much appreciated!!!