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Brief summary
Modern Rose, shrub "Knock Out", United States, introduced by William J. Radler in 1999, Usually is crimson in color, flat bloom shape, blooms 7 - 8 cm in size, has 5-10 buds per stem, continual rebloom, has moderate fragrance, the bush shape can be spreading, 90 - 100 cm in height, 150 cm in width, suitable for USDA zone 5 from -29°C and above, strong resistance to black spot, strong resistance to mildew.
Main characteristics
Aroma
USDA Zone 5
-29°С
Rebloom
Bush Shape
Bloom Shape
Flat
Size
Height
90 - 100 cm
Width
150 cm
Bloom size
7 - 8 cm
Buds / Stem
5-10
Petal Count
Resistance
Heat
Shade
Rain
Black Spot
Mildew
More information
Knock Out is cited as an example of a rose type likely to remain popular. It is a landscape rose or shrub that resembles a floribunda and shows strong disease resistance, drought tolerance, winter hardiness, and very abundant flowering. Individual blooms are light cherry in color, cup-shaped, with a white spot at the center and a cluster of greenish-yellow stamens. The flowers have a luminous look that persists until bloom time. They appear in tight clusters of 3–7, in large numbers. The bush is branched and spreading, suitable for mixed plantings, and densely covered with grayish foliage. Young growth is purple. It flowers continuously all summer.
A semi-marginal variety with red flowers, with a slight crimson tinge in the bud stage and a slightly translucent appearance. Silky petals are set against dense, matte leaves. Bushes are very dense, compact, and about 60 cm tall. Cultivated for two seasons; winter hardiness is noted. Despite an abundant late flowering wave, it prepares for winter easily and is characterized by rapid wood maturation. It received a major U.S. award in 2000.
A semi-marginal variety with red flowers, with a slight crimson tinge in the bud stage and a slightly translucent appearance. Silky petals are set against dense, matte leaves. Bushes are very dense, compact, and about 60 cm tall. Cultivated for two seasons; winter hardiness is noted. Despite an abundant late flowering wave, it prepares for winter easily and is characterized by rapid wood maturation. It received a major U.S. award in 2000.
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