Posted: 31/03/2012 at 13:57
I have the same problem area in my garden, My garden is an old quarry, so you can imagine the dry bank on the Southwest side.
Gardeners world gave some great ideas so watch it on iplayer if you can.
Hipericum grows very well on mine, to such an extent that i am trying to clear some of it in order to have some different plants aswell. I thought alpines and some wildfowers too that will spread quickly and seed thmselves.