Can anyone help me with planting ideas for a difficult border. The border is facing North East, is backed by a height 6ft wall and is about 12 foot with a depth of 5 foot . I have planted shrubs and trees along the wall, some of which are evergreen, but I would welcome ideas for plants ranging from about 3 foot high to ground level. It would also be nice to also have some colour during the summer months. I live in windy Anglesey.