Rose Cones
By The Old House Web
Rose cones can be used for winter protection. Like regular winter protection, their purpose is to keep the plant cold and limit freezing and thawing. Rose canes should be cut to fit comfortably beneath the cones. Four to six inches of soil is still added down the center of the plant. Place a brick or two on top of the cone to anchor it in place. Finally, poke a couple of holes in the cone at the top to promote ventilation. Three (3) nail holes should be sufficient size.
Remove cones in the spring when the ground has thawed and new buds start emerging.