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Shrub Rose 'Blushing Knockout'


Family: Rosaceae (ro-ZAY-see-ee) (Info)
Genus: Rosa (RO-zuh) (Info)
Cultivar: Blushing Knockout
Additional cultivar information:(PP14700, aka RADyod, Blushing Knockout, Blush Knock Out, Knock Out Blushing)
Hybridized by Bell
Registered or introduced: 2003
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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

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Unknown - Tell us

Where to Grow:

Unknown - Tell us


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

Jacksonville, Florida

Maitland, Florida

Summerfield, Florida

Atlanta, Georgia

Quitman, 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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Gardeners' Notes:


On Jun 5, 2018, GrdnRebel from Hamilton,
Canada wrote:

Zone 6b....I purchased this rose at a reputable nursery (Terra) and have never had any issues with any stock until now. Being a Knockout rose I was quite surprised to see it develop a horrible case of blackspot. I've been spraying weekly with fungicide to stem the condition. Yes, we've had a very humid spring but the rose has lots of space and excellent air flow. I noticed that some of the flowers have red streaks through them which is actually quite pretty. (Could they have mislabeled this rose?) I have a number of knockouts and have never had a blackspot issue until now. Just wondering if anyone else has experienced blackspot and/or the red streaks.


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. Makes a poor cut flower.

This has a slight fragrance---sometimes I can even smell it on the air nearby.

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


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!


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.