Red Double Knock Out Rose
Red Double Knock Out Rose (Rosa 'Radtko')
Red Double Knock Out Rose (Rosa 'Radtko') is a hardy, disease-resistant shrub rose known for its continuous double blooms in a rich cherry-red color. As a member of the Knock Out� series, this variety combines vibrant flower power with low-maintenance performance, making it a staple for home gardens, commercial landscapes, and mass plantings.
Distinctive Features
This deciduous shrub typically grows 3 to 4 feet tall and wide with a rounded, bushy habit. Its lush, double-petaled red flowers bloom in abundance from spring through frost with no need for deadheading. The dark green foliage is highly resistant to black spot and powdery mildew, keeping the plant looking clean and vibrant even in humid conditions.
Growing Conditions
- Sun Exposure: Full sun for best flowering
- Soil Type: Well-drained, fertile soil
- Soil pH: Slightly acidic to neutral
- Water Needs: Moderate; regular watering during dry periods
- USDA Hardiness Zones: 5 to 10
Ideal Uses
- Focal point in mixed shrub or perennial borders
- Mass planting for continuous seasonal color
- Foundation plantings and driveway borders
- Container gardens and patio planters
- Low-maintenance rose gardens with long bloom seasons
Low Maintenance Care
- Prune in early spring to maintain shape and encourage new growth
- Deadheading not required but may improve appearance
- Water deeply and consistently during hot, dry spells
- Fertilize in spring and midsummer with rose-specific fertilizer
- Mulch to conserve moisture and reduce weeds
Why Choose Red Double Knock Out Rose
- Double red blooms provide rich, long-lasting color
- Reblooms continuously from spring through fall
- Exceptional resistance to black spot and powdery mildew
- Low-maintenance and adaptable in a wide range of settings
- A reliable focal point for vibrant, easy-care landscapes
Red Double Knock Out Rose delivers nonstop color, disease resistance, and versatility, making it a standout focal point or mass planting choice for gardens that demand performance with minimal upkeep.
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