When to prune? Roses are best pruned in the spring. In Kansas City, prune during the first week or two of April, after the threat of frost has passed.
Why prune every spring? Encourages more flower production; Improves the health of the bush by opening the center of the plant to light and airflow; Removes damaged and diseased canes.
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. Summer is also the time to look for any branches in the center of the bush that are growing across each other. Prune away the weaker of the branches that cross each other.
The bulk of pruning should be done after the first flush of blooms.
At that time, old, or less vigorous canes can be removed to the ground. This will stimulate new shoots to develop and keep the Estimated Reading Time: 3 mins. climbers should be pruned after the blooms fade. Shrub, old garden, and species roses should be pruned in the spring to maintain size and shape. Deadheading.
Fading or spent blooms on repeat blooming rose bushes should be removed, deadheaded, as shown on. In this case, we recommend cutting back to 6” high once every two years.
Check your rose bush from time to time in late winter/early spring, and when you start to see new shoots growing from the canes on your rose bush, that’s a good sign that it’s time to prune. Feb 13, 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; Zones 5, 6 and 7 - March or April.