If you want season-long color without fussy maintenance, Shrub Rose 'Knock Out®' (Rosa 'Knock Out®') is a classic landscape choice. You get waves of cherry-red blooms from spring through fall, plus glossy foliage that stays attractive through the growing season. Expect a mature size around 24-36 inches tall with a similar spread, making it easy to tuck into beds or repeat along a foundation for a cohesive look.

Plant your rose where it will receive full sun for the strongest bloom and best overall performance. Give it well-drained soil and water deeply while it establishes; after that, it handles typical garden conditions well, especially with a layer of mulch to keep roots cool and soil moisture more even. Like most roses, good air circulation helps reduce disease pressure.

Use this shrub rose as a border plant, in mass plantings, or as a colorful specimen. It responds well to a simple yearly cutback in late winter or early spring to refresh growth and keep the plant dense. Throughout the season, light trimming can help maintain the shape you want.

Feed in spring with a balanced rose fertilizer if desired, then enjoy repeat bloom with minimal effort. Keep an eye out for thorns when placing it near walkways, and water at the base of the plant to keep foliage drier.

Specifications

• Cold hardiness zone: 5-9 (-20 degrees F) - Contact your local extension to confirm hardiness if you are in a fringe zone (we cannot guarantee hardiness in fringe zones)
• Light: Full sun
• Mature height: 24-36"
• Spread: 36-48"
• Tolerant of: Drought, Salt
• Good for borders & edging: Yes
• Edible: Yes
• Long bloom time: Yes

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