A perennial for a shady, long and very narrow border
Along the path from the front to the back garden we have a very narrow border - it is 6" wide and 5 metres long (I know, I'm being ecumenical ).
It faces North,north-west; half of it is against our neighbours' brick garage wall and the other half is against a 1m high brick wall.
I'd like to have something climbing up there but I know the neighbours don't want that, so I just want some ideas for a plant or plants that will cover the narrow strip of soil with some colour and texture and look good.
The soil is sandy loam.
The colours in the front garden are blues, plums, rusts and soft yellows.
I've pulled up all the trailing campanula that was there 'cos it always got tall and flopped over onto the path before it flowered.
At the moment I'm thinking Ajuga, but I thought you lot might have some other suggestions?