Posted: Yesterday at 18:14
Hi pinklara - I take it you could add some soil and create a bit of a slope from the front of the bed up to the wall on the house/garden side? That will help quite a bit, and you will be able to plant spreading perennials and evergreens which will drape over the wall, although not trail in the way you perhaps want
I have quite a lot of plants in a shady location, north and north west facing. Things like Hostas will fill a space and flow over the wall a bit. Hardy geraniums will do the same. Heucheras and Heucherellas are evergreens and come in a lot of foliage colours which will complement your other planting. Some of the ornamental grasses will also be happy enough in a shadier spot - Carexes in particular. I have Evergold which is a good colour for your scheme. Hackenochloa is another which will be happy in some shade, and forms a nice drooping mound - golden foliage.
You could interplant with some of the smaller leaved ivies which are variegated, and you'll be able to get them trailing down the other side. Vinca is a plant which will trail and grows in shade - the flowers are mainly blues though, so you may not care for it. There is a white variety though. Some of the herbaceous clematis would probably be fine too - they have a scrambling habit, unlike the more usual types which climb. 6 feet isn't a big space, so choose plants carefully for the room you have.
Hope that gives you a few ideas