KC Gardens

Knockout trim-back formula?


Last year someone posted the formula for cutting back knockout roses but now I can’t remember it. Was it that you should cut a knockout back to half the size you want it to be in the summer? Thanks - Seneca


  1. 1 year ago

    I prune mine much in the same manner as a hybrid tea rose which means I cut them back hard to about a foot or 18 inches. I cut out at the ground the very old and woody canes which allows new younger shoots to come up. This helps control the size and keeps the plants more garden worthy instead of looking like an overgrown shrub. Now is the time.

    Dennis - Johnson County Extension

Sign in with Facebook to comment.

Copyright 2014 The Kansas City Star.  All  rights  reserved.  This material may not be published, broadcast, rewritten  or redistributed.