Posted: 29/07/2013 at 10:31
I have a clematis in a wooden planter that I made a couple if years ago from floor boards and fence posts. I lined it with a sheet if thick plastic and slashed a few holes in the bottom. to save on weight I added 6" layer of broken up polystyrene packaging to act as drainage, then filled with compost.
With yours being at the front of your house I would weigh it down with heavier drainage material to help stop someone walking off with it.
Heres mine, which is currently filled with clematis, sunflowers, climbing hydrangea and sweet pea...