Photo by Melody

PlantFiles: Shrub Rose
Rosa 'Blushing Knockout'

Family: Rosaceae (ro-ZAY-see-ee) (Info)
Genus: Rosa (RO-zuh) (Info)
Cultivar: Blushing Knockout
Additional cultivar information: (aka RADyod, Blushing Knockout, Blush Knock Out, Knock Out Blushing)
Hybridized by Radler; Year of Registration or Introduction: 2004

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One vendor has this plant for sale.

6 members have or want this plant for trade.


24-36 in. (60-90 cm)
36-48 in. (90-120 cm)

24-36 in. (60-90 cm)

USDA Zone 4a: to -34.4 C (-30 F)
USDA Zone 4b: to -31.6 C (-25 F)
USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)

Bloom Color:
Light pink (lp)

Bloom Shape:

Flower Fragrance:
Slightly Fragrant

Bloom Time:
Late Spring/Early Summer
Blooms repeatedly

Can be trained as a standard or tree form

Patent Information:

Other Details:
Resistant to black spot
Resistant to mildew
Resistant to rust
Sets hips

Pruning Instructions:
Blooms on new wood; prune early to promote new growth

Soil pH requirements:
6.6 to 7.5 (neutral)

Propagation Methods:
From semi-hardwood cuttings

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There are a total of 11 photos.
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3 positives
No neutrals
No negatives

Gardeners' Notes:

Positive coriaceous On Feb 17, 2014, coriaceous from ROSLINDALE, MA wrote:

The flowers won't meet a rose fancier's standards, but this performs well as a low-maintenance landscape plant.

Profuse blooming, petals drop off cleanly, excellent continuity of bloom without deadheading, vigorous, well-branched, highly blackspot-resistant. New growth initiates easily from the base. Once established, this easily gets 7' tall in Z6a (Boston, MA) if you don't prune hard in early spring.

Softer flower color than the first knockouts. Slight fragrance. Makes a poor cut flower.

The cultivar name is 'RADyod'. "Blushing Knockout" is a proprietary trade name.

Positive zeldablue25 On Nov 2, 2008, zeldablue25 wrote:

My Blushing Knockout has grown like crazy since planting it 2 1/2 yrs. ago. It is almost 7 ft. tall and 5 ft. wide. People are constantly asking about it. It blooms from March/April through December. Subtle fragrance. One of my garden favorites!

Positive vossner On Oct 30, 2005, vossner from Richmond, TX (Zone 9a) wrote:

Shares the same qualities as cherry red Knock Out and/or the Pink Knock Out. I like it better because fewer people grow it. Extremely disease resistant, vigorous grower and prolific bloomer.


This plant has been said to grow in the following regions:

Jacksonville, Florida
Maitland, Florida
Summerfield, Florida
Atlanta, Georgia
Roopville, Georgia
Lafayette, Louisiana
Millersville, Maryland
Roslindale, Massachusetts
Uxbridge, Massachusetts
Humansville, Missouri
Concord, North Carolina
Hillsborough, North Carolina
Jacksonville, North Carolina
Kannapolis, North Carolina
Cleveland, Ohio
Powell, Ohio
Tulsa, Oklahoma
West Chester, Pennsylvania
Austin, Texas
Lumberton, Texas
Richmond, Texas
Rowlett, Texas
Portsmouth, Virginia

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