This year I finally got to use WiltPruf on lots of my bushes and trees. It seems that I don't see all the twigs and branches totally black (which would be the winter burn on the rose bushes). I also cover the bottoms with layers of straw for the winter. After all of this, I did order 6 rose bushes from a co-op in fall......just in case, and some shrubs from Bluestone's half priced Friday sales.