Small plants for crevices
I have a walled bed the corner of the garden, which is in shade for most of the day. I'd like some advice on finding and planting plants in the small gaps between the bricks at the front (pic below).
The thing is, it appears this flower bed used to be a pond, so there's a barrier between the wall and the soil behind. As such, I'm dont think the roots of anything I plant in the crevice will be able to get through to the bed behind, so I guess i need something that can survive on little soil.
does anyone have any ideas? Or am I asking for the impossible?
thanks in advance!