Overwintering Roses - Knowledgebase Question

Wappingers Falls, NY
Avatar for platino711
Question by platino711
November 14, 1997
We just got a snowfall of 4 inches. There are still leaves on the roses. It is expected to go up to 45 degrees by the end of the week. What should I do and when should I do it?

Answer from NGA
November 14, 1997
Since you didn't mention what kind of roses you're growing, I'll give the basic rundown on common types.

If you have individual rose bushes, cut canes back to 2 to 3 feet tall AFTER THEY'RE DORMANT. If the stems have turned purplish, they're dormant. If you prune roses before they're dormant, it can reverse the process, and they'll likely be more succeptible to cold damage. Cover the crown with a 1-foot deep layer of bark mulch. This will protect the crown and allow airto circulate; soil, leaves and grass clippings tend to hold too much water which can cause rot. Then wrap the canes with burlap to protect them from drying winds.

Another method is to use purchased rose cones. Be sure to anchor them well so they won't blow away. These cost more, and I'm not sure if, they provide any better protection than the first method.

Hedge (shrub) roses tend to be hardy, and need little care beyond annual early spring pruning, and topdressing with compost.

Climbing roses vary in their hardiness. Large-flowered climbing and rambling roses are the hardiest, and require that their crowns be buried in 1-2 feet of mulch. Climbing 'sports' are very tender, and require uprooting and winter 'burial' of the entire plant.

You must prune roses each year in the spring to keep them blooming well. Remember roses bloom on new shoots that sprout from canes that grew the previous year. You should cut out older, unproductive wood, as well as weak, broken and diseased branches. Always cut on a slant just above a bud or certianly to a live branch and retain enough leaves to sustain the plant.

Also be sure to feed your roses well. They truly benefit from this. They require well drained soilwith a pH of 5-6. Full sun for 8 hours is best, but they'll tolerate 6 hours if it's mostly morning sun.

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