I have a bed which curves along one side of lawn , at the top more quadrant shaped which back side backs into open field, the right onto neighbours fence (open wood rails with open mesh farm style attached) . Being a sunny bed it has worked with no problem however the neighbour who does nil gardening has copied the quadrant although without any plants yet, lowering their side , my soil now sinks . My question is after all that what to use to keep the soil in , I have been looking at the green rolls of lawn trim not sure how effective they are though , anyone have similar to deal with ?