Red Double Knock Out Rose

Red Double Knock Out Rose (Rosa 'Radtko')

Red Double Knock Out Rose delivers bold, saturated red color with full, double blooms that keep coming from spring to frost. Flowers arrive in clusters, so the shrub reads as consistently colorful rather than showing a few scattered blooms. Its naturally rounded, bushy habit fits easily into beds and foundation plantings and looks finished without constant pruning. If you want a dependable red rose with long-season impact and a straightforward care routine, this one is built for everyday landscapes.

Distinctive Features

This shrub rose produces abundant, fully double cherry-red blooms with a classic rose look and strong repeat flowering through the warm season. The flowers hold their color well and continue to appear in flushes, keeping the plant showy for months. Foliage is a deep green that provides clean contrast and supports a dense, rounded form that stays landscape-friendly. Mature size is typically about 3 to 4 feet tall and 3 to 4 feet wide.

Growing Conditions

• Sun: Full sun is best for maximum bloom and the healthiest, densest growth.
• Soil: Plant in fertile, well-drained soil and amend with organic matter for best performance.
• Water: Water deeply during establishment, then water when the top few inches of soil are dry while avoiding soggy conditions.
• USDA Zones: Zones 5 to 11.
• Spacing: Space about 3 to 4 feet apart to support airflow and allow the shrub to fill out evenly.

Ideal Uses

• Focal Point: Use as a focal point in a sunny bed where rich red bloom can anchor the color palette from spring through fall.
• Mass Planting: Plant in groups for a bold sweep of red that reads well from the street.
• Foundation Beds: Adds long-season color and a tidy, rounded form along the house without constant shaping.
• Mixed Borders: Pairs easily with perennials and shrubs, adding repeat bloom and dependable structure.
• Low Hedges: Use in a row to create a flowering edge that stays full and colorful for months.

Low Maintenance Care

• Pruning: Prune in late winter to early spring to shape the shrub and encourage vigorous new flowering growth.
• Deadheading: Deadheading is optional, but removing spent clusters can improve tidiness and encourage quicker repeat bloom.
• Watering: Water at the base to keep foliage drier and reduce disease pressure.
• Feeding: Fertilize in spring and again after the first heavy bloom flush to support continued flowering.
• Mulching: Mulch to conserve moisture, suppress weeds, and moderate soil temperature around the roots.

Why Choose Red Double Knock Out Rose?

• Double Red Blooms: Fully double cherry-red flowers deliver a classic look with strong landscape impact.
• Season-Long Flowering: Repeat bloom from spring to frost keeps beds looking active for months.
• Dense, Rounded Habit: A naturally full 3 to 4 foot form looks finished without constant shaping.
• Clean Foliage Contrast: Deep green leaves provide a polished backdrop that makes the flowers stand out.
• Easy Garden Performance: Built for dependable color and a neat habit with a straightforward care routine.

If you want a reliable red landscape rose that blooms heavily and stays easy to manage, Red Double Knock Out Rose is an excellent choice. Plant it in full sun with good drainage, keep moisture consistent while it establishes, and enjoy months of rich red color on a tidy, garden-ready shrub.