| Kristin, I don't think mulch will kill rose shoots. For pesky roots of any kind, be it tree roots or shrub roots, I would fire up my tiller and dig them out. If you don't have a capable tiller, there are plenty of hand tools that can attack the roots, including a spading fork, landscaper's mattock, "sharp shooter" spade, etc. I wouldn't want to poison the soil with any kind of herbicide. MM |