OK, this is my third winter with this green fiberglass edging I purchased from Lowes. While it is holding up well to the elements in terms of looks, i'm tired of the frost heave pushing this stuff almost completely out of the ground each winter. It came with these small, maybe 6" spikes that are supposed to hold the edging in the ground. But they are smooth and round with no teeth to prevent them from coming out. Those may work in the South, but not here in Michigan. The ground just spits it up like nothing. Then the ground closes up behind it and I have to retrench and bury the edging again each Spring. There are so many different kinds/brands of edging out there...does anyone have any recommendations for a location with harsh winters? And not the stainless steel stuff...I hate the way that shiny stuff looks in a yard.