Use hand pruners — and thick gloves — to remove spent rose blooms to encourage repeat blooming in summer. Cut the stems to just above a five-leaflet leaf. Such pruning isn’t required for landscape roses such as Knock Out but will give the rose a more groomed look.
— Adrian Higgins
Adrian Higgins has been writing about the intersection of gardening and life for more than 25 years, and joined the Post in 1994. He is the author of several books, including the "Washington Post Garden Book" and "Chanticleer, a Pleasure Garden."