'Coral Knock Out ®' rose Description
Photo courtesy of Kelley Macdonald
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Orange or orange-red Shrub.Registration name: RADral
Orange or orange-red. 15 to 18 petals. Average diameter 2.5". Double (17-25 petals), cupped bloom form. Blooms in flushes throughout the season.
Medium. Matte, medium green foliage.
Height of up to 4½' (up to 135 cm). Width of up to 4½' (up to 135 cm).
USDA zone 4b through 10b. Can be used for beds and borders, garden or landscape. Hardy. Disease susceptibility: very disease resistant. 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.
United States - Patent No: PP 19,803 on 10 Mar 2009 VIEW USPTO PATENT
Application No: 11/980,538 on 31 Oct 2007
Varietal denomination: cv. Radral
The new variety of Rosa hybrida shrub rose plant of the present invention was created at Greenfield, Wisc. U.S.A., by artificial pollination wherein two parents were crossed which previously had been studied in the hope that they would contribute the desired characteristics. The female parent (i.e., the seed parent) was the `Radorg` variety (non-patented in the United States). The male parent (i.e., the pollen parent) of the new variety was the `Rader` variety (non-patented in the United States). The parentage of the new variety can be summarized as follows: `Radorg` .times.`Rader`.
Ploidy information from David Zlesak.