When is the best time to trim knockout roses?
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If you're in a colder area, wait until late winter, early Spring.
Hello Shelia,
In general, you will be pruning just before the plant breaks dormancy after spring's final frost. This will be early in the year in warm climates, and anytime between January and April in cold climates.
Heres an informative link. I hope this helps.
https://www.knockoutroses.com/pruning/
Hi Sheila - This is a great article on rose trimming that's also loaded with a big dose of inspiration. Hope this helps! Hugs, Holly
https://pinkfortitude.com/move-forward/
The experts say in a colder climate, trim when the Red Sox have their first game!
Hi Sheila ~ Not sure the area you are from, but the nursery where we purchased our knock-out roses in Virginia, said to cut them back on President’s Day. We have done this for many years and they come back beautifully each year.