WHEN TO PRUNE ROSES The best time to prune roses is in late winter or early spring, around the time new growth begins.
This could be as early as January or as late as May, depending on your climate. If you’d like to mark your calendar, or set yourself a pruning reminder, here are regional estimates: Zones 3 and 4 – May. Pruning in the fall encourages new growth which will not harden off and freeze during the winter.
You can take up to 1/3rd off the hedge when you prune in late winter/early spring. Do you cut back Knockout roses? To maintain a size of 3–4' w x 3–4' h, Knock Out Roses should be cut back once a year to 12” high in early spring (after the. Nov 28, Despite all of these variables, you can clean up your rose bushes in late autumn in preparation for winter as long as you leave major pruning to. The best time to cut back roses is on spring when the buds start to swell on your rose plants.
The bumps on the canes should be huge and reddish in hue by then. Timing your pruning before those buds open.
Here is a short tutorial on how to cut back your overgrown roses:Estimated Reading Time: 5 mins. May 22, While it’s healthy to prune rose plants late in the winter, in anticipation of spring growth, you should not prune rose plants late in the fall. Avoid pruning rose plants after October 1 (in the northern hemisphere), or they could be damaged by cold weather%(1).