Rosa Double Knock Out Shrub Rose
Best low-maintenance shrub for gardeners seeking season-long color and disease resistance.
The Double Knock Out® Shrub Rose offers exceptional landscape performance with fully double, cherry red blooms that appear tirelessly from early summer until frost. This variety boasts superior resistance to blackspot and other diseases, ensuring healthy, attractive foliage. Its compact and dense growth habit makes it perfect for borders or low hedges. Emerging foliage displays rich burgundy tones, adding multi-season visual interest. This shrub thrives in various conditions, demonstrating excellent drought, heat, and humidity tolerance, making it a robust and beautiful addition to any garden.
$34.95
Owner Satisfaction
4.7
/ 5
Category Rank
34
/ 2688
#34 in Bushes & Shrubs
Price vs Category Average
-11%
Below average
Virtual SKU
2345
/ v
Who it's for
- Busy gardeners wanting beautiful roses without constant chemical treatments
- Homeowners desiring vibrant, season-long color in their landscape
- Regional gardeners needing reliable plants for extreme climate conditions
Who should skip it
- Collectors searching for rare or unique heirloom plant varieties
- Fragrance lovers seeking a classic, sweet-smelling rose garden
- Low-maintenance gardeners who prefer a hands-off landscape approach
Performance breakdown
Bloom Consistency
Continuous cherry red flowers persist reliably from early summer until frost.
Disease Resilience
Superior blackspot resistance keeps foliage healthy with minimal chemical intervention.
Environmental Adaptability
Thrives across diverse climates, handling heat, humidity, and drought with ease.
Growth Habit
Compact, mounding structure fits perfectly into borders or small garden spaces.
Shade Tolerance
Performs better in partial shade than most traditional rose varieties.
Maintenance Requirements
Self-cleaning nature significantly reduces the need for constant deadheading.
Key Specs
Virtual SKU
v2345
Genus
Rosa
Variety
'RADtko'
Bloom Color
Red
Mature Height
4 Feet
Mature Width
4 Feet
Hardiness Zones
5 - 11
Growth Rate
Moderate
Features
- Tireless blooming from early summer until frost
- Exceptional disease resistance
- Fully double-flowered blooms
- Greater shade tolerance
- Compact and dense growth habit
- Emerging foliage shows burgundy hues
- Withstands drought, heat, and humidity
- Crown-hardy to -20°F
What customers say
Customers consistently celebrate the Double Knock Out Rose for its exceptional reliability and ease of care. The overwhelming sentiment highlights how effortlessly this shrub thrives, delivering continuous, vibrant blooms throughout the season without demanding constant attention. Gardeners, regardless of experience level, praise its robust quality and impressive disease resistance. This rose is viewed as a superior value investment, transforming garden spaces with minimal fuss and maximum visual impact.
Know before you buy
The Double Knock Out rose is a prolific bloomer, producing cherry red flowers continuously from early summer until the first frost of the season.
No, this shrub is specifically bred for exceptional disease resistance, including high tolerance to blackspot. It is considered a low-maintenance option compared to traditional rose varieties.
Yes, this variety is container-friendly. Given its compact, mounding habit and 4-foot mature size, it performs well in large pots on patios or decks.
While it thrives in full sun, the Double Knock Out offers greater shade tolerance than many other rose varieties. It will still bloom well in areas that receive partial shade throughout the day.
This rose is crown-hardy down to -20°F and is suitable for USDA Hardiness Zones 5 through 11, making it a versatile choice for many different climates.
For the best performance, plant this shrub in loamy, well-drained soil. It is quite robust and demonstrates excellent tolerance to heat, humidity, and drought once established.
Still have a question?
Ask Hayley anything about this product before you decide.
Ready to buy?
$35