Answer: The reason for pruning your roses down to knee-high before winter sets in is to keep the canes from whipping about in the wind. In March you can prune them down to 8-10", cutting to an outside facing bud where you want new growth to begin. At this time, prune away some of the oldest (grayest) canes, leaving 3-5 of the sturdiest, healthiest looking canes. The object is to have a vase-like structure with the center open. Hope this clarifies things for you!
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