Look at a combination of Geranium macrorhizum (Big Root Geranium) and Epimedium sulphureum. Handsome and semi evergreen even in your zone, I think. Both very low maintenance.

Clovers need sun. The lowest maintenance-type plants are evergreen - look at Japanese spurge (Pachysandra terminalis), periwinkle (Vinca minor), dead nettle (Lamium maculatum) or many types of epimediums, referred to above.

Lily of the Valley is tough and fairly shade tolerant.