Lynn - that's what I do with my roses. Everything's buried ridiculously deep & then I pile the mulch on top. For the past week, we've had wonderful above-normal temperatures (50-60s), but I needed a picture of a rose graft, so I checked out some of my roses in the front yard (over 130). The mulch is still frozen solid & I have 3" of ice in a shaded spot in my yard.
