Out
On A Limb / November 2006
Wintering Roses
Winterizing roses is an important practice to ensure their survival and vigorous growth year after year. Hybrid teas, grandifloras, floribundas, and climbers should be protected after a killing frost but before the soil freezes. In the Mid Ohio Valley, this is usually late November or early December.
There are several methods gardeners can use, dpending on their preference.
For minimum winter protection, tie canes of bush roses together, then mound soil 8-10 inches high around the base of the canes. To provide more protection, cut long canes back to 30-36 inches and tie the tips together to reduce breakage from winter wind whipping. Mound soil over the base of the canes in broad, rounded mounds at least 12 inches high and 12 inches wide; then cover the soil mounds with a mulch of leaves, straw, or evergreen boughs.
Another method uses such as wood chips, sawdust, shredded hardwood, or pine bark instead of soil, mounded to 15-18 inches around the plant’s base. Some gardeners prefer to construct wire mesh cylinders to surround each plant, then fill this with mulch. Others use rose cones, baskets with bottoms cut out, or burlap to wrap the plants.
For maximum winter protection, cover the rose bush with a protective cone. Use straw or leaves to insulate the bush inside the cone. Puncture several one inch diameter holes around the top of the cone for ventilation.
To winterize climbers, remove them from their support. Lay them on the ground and cover with 3-4 inches of soil. Or, gather and tie the tips of the stems together, and wrap them in straw with a burlap cover wrapped over that. Mound the base of the climber with ten inches of soil. Sit back and wait for Spring!
For more information, see http://washington.osu.edu/.
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