Posted: 10/08/2015 at 08:47
You've planted the climbers against the wall in the right way Planting away from the base of the wall and angling the plant towards it helps keep the roots out of the dry area of rain shadow cast by the wall.
The link illustrates planting a clematis to climb up a trellis arch - the arch will not cast a rain shadow as a wall does, so the rootball doesn't need to be as far away.
Check out the prevailing wind and the direction the rain comes from most often - if the climbers are going to be in the lee of the trellis and consequently in a dry spot then I'd plant them away from the base of the trellis and slope them towards it.
Graham Thomas is my favourite honeysuckle - mine has been in bloom for three months now - but it won't grow downwards It's best to plant a climber on each side of the arch. My Lon. Graham Thomas is growing in almost complete shade on a north-facing fence under a large tree and is happy. Other climbers suitable for shady spots are some of the clematis - take a look here http://www.taylorsclematis.co.uk/