Lysimachia japonica 'Minutissima' - This dense mat-forming creeper is as close to being as true a steppable as they come. Tiny oval green leaves on short congested stems will cover ground quickly. Yellow flowers stud the leaves in early summer. A good choice among stepping stones, in the rock garden, as and edger before and among perennials or a ground cover before woodies alike. It will also eventually cascade over a wall when planted near the edge. Dwarf Creeping Jenny... Jenny's Mini Me. It is evergreen to about 15F. Fully to mostly sunny exposure in average to fertile and/or gritty draining ground.