You may have a green thumb; I have a black thumb.
I'm looking for an easy zero-maintenance ground cover for full sun, on a slope, sandy soil, zone 4, and preferably can be planted now from walmart (nearby nurseries are insanely expensive).
Oddly enough, a hosta is thriving at the top of that spot, but I don't want to purchase more since others are saying it's an exception (green with white edged leaves). I need to fill in about 5ft x 2ft more (currently overrun with weeds and grass).