The Knock Out Rose in a powerful pink! The Pink Knock Out is a self-cleaning non-stop blooming shurb rose is the perfect companion to other flowering shrubs roses and perennials. Knock out pink will bloom single form blooms from spring into fall. This rose looks great in the landscape as an accent hedge or grouping, or in a standalone or in a mixed container garden. Use a fertilizer formulated for roses to keep your plants healthy and blooming.