Wintergreen comes to mind. Not the easiest plant to find for sale, but we had some planted in a previous home in a shady/ dappled sun spot and it was very happy. Pretty mounding plant as I recall.Adding soil and pest moss to newly cleared area for partial shade garden. I dont know what to edge it with or even if I have too? I want to make my yard eventually into a food forest so I want it as natural as possible and nothing that is too heavy or has to be moved to work in the garden. Anyone got any good edible plant I could use as a border plant for zone 4?