Very difficult problem to solve!

[Tetters]

Yes, and although they are usually ''blobs'' my ones are very gorgeous blobs - in fact, I have grown them very close to walls and fences, and they appear to climb (they don`t climb of course) but they seem to like to grow against a wall/fence fairly tightly.

 

[Oliver Buckle]

Does it need to be year round? I would consider something herbaceous like Morning glory which would give you quick cover and be fine with the soil in that space, but maybe your winter is a bit more clement, we don't get out in the garden much that time of year