Jan 17, Wait until the first frost is over to prune. Pruning your rose bushes can promote new growth. If you trim them before the first frost, it could create new buds that will be killed when the first frost comes along.
This can damage the plant and make it produce less flowers in the spring%(4). They should be pruned just after the flowers finish, although you can remove dead or unwanted branches at anytime. In the summer, prune rose bushes to remove dead or diseased branches.
Make the cuts one inch below the diseased branch, so only healthy wood remains. Rose bushes are pruned two times each year -- spring and fall. Fall pruning prepares roses for colder weather when the plants do not have as much energy for growth and bloom development. Fall pruning is lighter than spring pruning and can be thought of as grooming rather than heavy pruning.
Feb 13, 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. Sep 17, Always prune in early spring when new shoots are beginning to form on the canes.
Prune to about a third of the desired final size. Knock Out roses typically triple in size after pruning. Remove dead or damaged wood when you see it. Every two or three years, remove a third of old growth to rejuvenate the shrub. A frost date is the average date of the last light freeze in spring or the first light freeze in fall. The classification of freeze temperatures is based on their effect on plants: Light freeze: 29° to 32°F (° to 0°C)- tender plants are killed.
Moderate freeze: 25° to 28°F (° to.