Posted: 06/09/2015 at 18:42
If its sunny how about osteospermum? A cascading rosemary too would look good there....get one with bright blue flowers. If it's not too cold check out convolvulous cneorum.....a silver cascading and mound forming beauty with glistening pure white summer flowers. All these like good drainage. nepeta too would grow there.
for the lower part.....artemisia? Hemerocallis...day lily....? A grass like stipa arundinacea? Lavendar? Crocosmia?