Posted: 07/03/2016 at 09:15
I have stone planters just a little bit bigger in width and height. They are too small for perennials but I plant annuals in them each year. Trailing plants that hang down the wall would help make it prettier, such as trailing petunias, million bells, diascia, lobelia etc.
I plant violas in mine in the autumn for spring flowering then dig them up after risk of frost is over and plant summer flowering annuals.
You could paint the wall and, if funds ran to it, put a large planter with trellis attached to the wall and grow a clematis, suitable for growing in a pot.