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 ...
Lightly pruning roses in fall helps protect them from wind, snow, and ice. Prune in mid-to-late fall. Use clean, sharp tools to remove diseased or dead wood and shorten tall canes. Avoid heavy pruning ...
Q • My roses look fairly ugly. Should I cut them back now? Write to the Missouri Botanical Garden’s Center for Home Gardening at [email protected] or the Horticulture Answer Service, 4344 ...
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