Border Plants That Tolerate Damp Soil

[lacmag3]

Our elevated garden slopes down to the retaining wall of our patio. Despite shoring the garden the border along the top of the wall/bottom of the garden remains damp. I'm trying to find attractive/showy plants for the bed along the top of the wall that will tolerate damper soil. Has anyone any suggestions?

[woofgang]

how damp? and acid or alkaline? What sort of thing have you had there which have failed? sun or shade?

[sapelesam]

I would Google marginal plants. These are plants that do well around ponds and other water features.

[Buenchico]

Have a play with this:
https://www.rhs.org.uk/plants/search-form

Set 'Moisture' to either 'Moist but well-drained' or 'Poorly drained', as appropriate. Then complete as many of the other fields as you feel like. (You don't need to complete them all).