If you have tree roses, also known as rose standards, in your garden, you need to give them lots of insulation from cold winters. Although tree roses can thrive in colder U.S. Department of Agriculture Hardiness Zones, they won't last through the winter without a little help from you. Start your tree rose winterization project in late autumn, before temperatures drop below freezing.
Build a cylindrical cage of wire mesh, chicken wire or flexible plastic foam around your tree rose near the end of autumn. Extend the cage about 6 inches above the top of the tree.
Fill a wire or mesh cage to the top with mulch or straw, so the top of the rose tree is covered with 6 inches of material. No mulch or straw is necessary if you used plastic foam -- the foam provides enough insulation.
Wrap the cage with burlap for further protection. Secure the burlap with rope, duct-tape or another heavy-duty tape.