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Double Knock Out® Rose

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This carefree landscape rose has all of the great features of Knock Out plus the added bonus of fuller blooms with twice as many petals; cherry red blossoms and deep purple fall foliage provides your garden three seasons of interest

Characteristics

Other Species Names:
Knockout Rose
Average Landscape Height:
3 feet
Average Landscape Width:
3 feet
Genus:
Rosa
Cultivar:
Radtko
Branching:
multi-stemmed
Plant Form:
round
Canopy:
closed
Growth Rate:
medium
Pruning:
late winter pruning
Flower Color:
cherry red
Flower Bud Color:
ruby
Flower Fragrance:
medium
Flower Period:
from late spring to early fall
Summer Foliage Color:
dark green
Fall Color:
dark purple
Maximum Light:
full sun
Minimum Light:
full sun
Maximum Moisture:
moist
Minimum Moisture:
average
Pollution Tolerance:
medium

Ornamental Features

Double Knock Out® Rose is smothered in stunning lightly-scented cherry red flowers at the ends of the branches from late spring to early fall, which emerge from distinctive ruby-red flower buds. The flowers are excellent for cutting. It has attractive dark green deciduous foliage which emerges burgundy in spring. The glossy oval compound leaves are highly ornamental and turn an outstanding deep purple in the fall.

Landscape Attributes

Double Knock Out® Rose is a multi-stemmed deciduous shrub with a more or less rounded form. Its average texture blends into the landscape, but can be balanced by one or two finer or coarser trees or shrubs for an effective composition.

Planting & Growing

Double Knock Out® Rose will grow to be about 3 feet tall at maturity, with a spread of 3 feet. It tends to fill out right to the ground and therefore doesn't necessarily require facer plants in front. It grows at a medium rate, and under ideal conditions can be expected to live for approximately 20 years.

This shrub should only be grown in full sunlight. It does best in average to evenly moist conditions, but will not tolerate standing water. It is not particular as to soil type or pH. It is somewhat tolerant of urban pollution. This particular variety is an interspecific hybrid.

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