Knock out roses - Knowledgebase Question

Union, Ke
Avatar for dwkmgreene
Question by dwkmgreene
August 20, 2009
When and how far should I cut them back. I want to keep them under 3 feet tall if possible? They are next to a sidewalk and windows.

Answer from NGA
August 20, 2009
You can cut Knock Out roses back at any time of the year. I generally cut mine down in early spring, reducing them to about 12" and then clip them back periodically during the summer months so they won't get unruly. They grow nicely all summer and the following spring I prune them back again. You can keep yours about 3' tall with continuous light pruning. This will keep them full and flowering most of the summer. Enjoy!

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