Prune Knockout roses heavily in late winter or early spring as new growth begins. Lightly deadhead and shape in late summer, stopping two months before frost. For annual pruning, cut back one-third of ...

Roses can be pruned in fall or spring—fall helps with shaping, while spring pruning supports fresh growth. In cold zones, stick to light fall pruning to avoid frost damage; in mild zones, heavier cuts ...

Find out when to prune Knock Out roses and how to make your cuts to keep your plants looking their best. Knock Out roses bloom for months and tolerate less-than-perfect growing conditions, so it's no ...