Winterizing – Hilling – for your rose that is planted in well drained area hill-up a loose, well-drained soil/compost mix around and over the rose to a depth of about 10-12inches, use soil that is brought in and make sure it is dry, wet and cold does more damage than dry and cold. After soil has frozen mound with evergreen boughs, hardwood leaves or straw to help insulate and keep soil frozen.
Winterizing – Rose Cones – don’t cover plants too early. These Styrofoam cones need to be well ventilated to prevent a heat build-up on sunny warmer winter days. Cut 4-5 one-inch holes in top and bottom which will aid in ventilation on the warmer days preventing rose from breaking its winter dormancy. Advisable to add mound soil around the crown of the rose before putting cone in place. Sometimes you can add straw to the inside for added protection. Put a brick on top of cone to prevent blowing away!