Pruning Knock Out Roses In November
QUESTION: We live in Connecticut and would like to cut back our knockout roses now coming into November.
They are still blooming and getting roses. Should we wait to later in the winter to cut them back when they are more dormant?
We are going to take a considerable amount off as the are getting to big. What do you suggest.
ANSWER: Hi! You should NOT cut back or prune Knockout roses, or any rose, in November.
This will result in new tender growth emerging and it will suffer from winter kill.
Roses should be pruned in spring or late winter, on cold regions, after all danger of frost is over.
Once-blooming roses should only be pruned in summer after flowering.
Here is my page about pruning knockout roses.