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'RADtkopink' rose Description
'Pink Double Knock Out ®' rose photo
Photo courtesy of Jean Marion
Commercially available
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Average rating: EXCELLENT.  
Medium pink Shrub.
Registration name: RADtkopink
Exhibition name: Pink Double Knock Out ®
Discovered by David F. Cockcroft (United States, before 2004).
Introduced in United States by Conard-Pyle (Star Roses) in 2007 as 'Pink Double Knock Out'.
Introduced in United States by Novalis Plants That Work in 2007 as 'Pink Double Knock Out'.
Deep pink, fuchsia / magenta shading, ages to darker .  None to mild fragrance.  30 to 35 petals.  Average diameter 3".  Medium, full (26-40 petals), in small clusters bloom form.  Blooms in flushes throughout the season.  Medium, ovoid buds.  
Short, bushy, rounded, upright.  Small, matte, dark green, dense, leathery foliage.  3 to 7 leaflets.  

Height: 35" to 47" (90 to 120cm).  Width: up to 39" (up to 100cm).
USDA zone 4b and warmer.  Can be used for beds and borders, cut flower, garden, hedge, landscape or shrub.  Heat tolerant.  Protect tender new spring growth from hard freezes that may cause canker, die-back and death of the plant. .  Remove spent blooms to encourage re-bloom.  Spring Pruning: Remove old canes and dead or diseased wood and cut back canes that cross. In warmer climates, cut back the remaining canes by about one-third. In colder areas, you'll probably find you'll have to prune a little more than that.  Remove old canes and dead or diseased wood..  
Canada - Patent No: 3757  on  28 Jan 2010
Application No: 08-6391  on  23 Jun 2008
Breeder: Jason Brown, Elkton; Cockcroft Dave, Granby; Jerome Lavalee, Granby, all United States of America
'Radtkopink' originated from a naturally occurring, spontaneous mutation of the variety 'Radtko'. The new variety was discovered in 2004 within a group of 500 three year old rooted cuttings of the variety 'Radtko' that were propagated at Granby, Conneticut, United States in 2001.
United States - Patent No: PP 18,507  on  19 Feb 2008   VIEW USPTO PATENT
Application No: 11/471,610  on  21 Jun 2006
Inventors: Cockcroft; David F. (Simsbury, CT), Lavallee; Jerome A. (Agawam, MA), Brown; Jason N. (Elkton, MD)
A single plant of the new variety was discovered at Granby, Conn., U.S.A. while growing among a group of 500 plants of the `Radtko` variety (U.S. Plant Pat. No. 16,202). The plant was approximately three years of age and have been asexually reproduced by the rooting of a cutting of the `Radtko` variety.... The description is based on the observation of two year-old specimens of the new variety during October while growing outdoors on their own roots near West Grove, Pa., U.S.A.