Double Knock Out Rose for Easy Garden Care
Product details
| Management number | 250481564 | Release Date | 2026/09/17 | List Price | US$39.98 | Model Number | 250481564 | ||
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The Double Knock Out® Rose (Rosa 'Radtko') delivers continuous cherry-red to raspberry double blooms from spring through fall. Each blossom holds roughly two dozen petals on a mound reaching three to four feet wide and tall. This shrub requires zero chemical sprays due to reliable resistance against blackspot and powdery mildew. Spring foliage emerges burgundy before settling into glossy green.
Naturally self-cleaning flowers drop seamlessly, removing the need for manual deadheading. One yearly hard cutback preserves its compact branching structure, making it highly adaptable for foundation beds, low informal hedges, sunny containers, and perennial mixes. Thriving reliably in USDA zones five through ten, this rose handles cold winters and humid summers without losing vigor.
📋 Product summary:
- Mature size: 3 to 4 feet tall and wide
- Continuous blooming period from spring to fall
- Approximately two dozen petals per double flower
- USDA hardiness zones 5 through 10
- Strong natural resistance to blackspot and mildew
- Self-cleaning habit eliminates deadheading
- Maintained with one annual hard prune
- Foliage shifts from burgundy to glossy green
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