Creeping Jenny comes back every year and keeps out the weeds. Great contrast color to plants and flowers.(Lysimachia) Portage and in 13 I put three out by front porch. Feed in the Spring. 3-6hrs sun, hardy to -30.
weed-smothering ground covers: plumbago (Ceratostigma plumbaginoides, zones 5 to 9) This plant grows well in sun and part shade in all kinds of conditions all over the U.S. It chokes out weeds, blooms in a clear blue that reflects the summer sky and tops it off with fantastic fall color.