How far back should knockout roses be trimmed?

Marie Worley
by Marie Worley
  5 answers
  • Janet Pizaro Janet Pizaro on Mar 09, 2017

    Where do you live?

  • Johnchip Johnchip on Mar 09, 2017

    Always cut a bloom back to the five leaf sprout on stem. Always cut stalk above where it "Y"s out.

  • Sherri Taylor Sherri Taylor on Mar 10, 2017

    12 to 18 inches will be fine.

  • Madeline M Madeline M on Mar 10, 2017

    Every year I trim my Knockout rose to 18" to 24". It comes back beautiful and grows quickly. We live in coastal Virginia.

  • Kid Kid on Mar 12, 2017

    Well first of all I do not cut my roses back unless they are getting too tall. The energy for new roses are stored in the cane. Cutting 1/3 of the canes back every few years will make new canes shoot up.

    That saidThis is what my book says:

    Prune in late winter or early spring, while the plant is still dormant. Remove any dead or damaged wood, do a little shaping if necessary, and take out some of the interior stems to improve air circulation. Every 2 or 3 years remove about one third of the old branches to stimulate new, fresh growth. If you are trying to keep the roses at a certain height, you can cut them back hard with hedge shears. No need to worry about usual rose pruning rule of cutting back to an outward facing leaf bud – just lop them down to the desired size