Rose Type: Shrub Rose
Double Knock Out® produces full, double cherry-red flowers that bring strong, lasting color to the landscape. The approximately 3-inch blooms carry 18–24 petals and are set against deep purplish-green foliage, creating a rich contrast throughout the plant. Its rounded, bushy shape gives it a naturally balanced appearance that works well both on its own and in larger plantings.
The flowers are described with a fruity, sweet scent and bloom repeatedly from spring through frost. Double Knock Out® grows about 3–4 feet tall and wide and combines strong disease resistance with heat and drought tolerance. Its dependable reblooming and adaptable shrub habit make it especially useful for mixed beds, group plantings, and landscapes where season-long color is wanted.
Pot Size: 2 Gallon
Color: Cherry red
Bloom Size: Approximately 3 inches
Petal Count: 18–24 petals
Fragrance: Fruity and sweet
Bloom Habit: Repeat flowering from spring through frost
Height: Approximately 3–4 ft.
Width: Approximately 3–4 ft.
Growth Habit: Bushy and rounded
Foliage: Deep purplish green
Disease Resistance: Strong
Sun Exposure: Full sun
Water Needs: Low water use; water regularly until established
Hardiness Zones: 5–11
Environmental Tolerance: Heat tolerant and drought tolerant
Best Uses: Individual specimens, group plantings, mixed perennial and shrub beds, and gardens of all sizes
Special Features: Full double flowers and reliable repeat blooming from spring through frost
Breeder: Will Radler
Introduced: 2004
US Patent No.: PP16,202
Registration Name: Radtko
Awards: American Rose Trials for Sustainability (A.R.T.S®), UC Davis Blue Ribbon™
Collection: The Knock Out® Family of Roses
Rose Type: Shrub Rose
Double Knock Out® produces full, double cherry-red flowers that bring strong, lasting color to the landscape. The approximately 3-inch blooms carry 18–24 petals and are set against deep purplish-green foliage, creating a rich contrast throughout the plant. Its rounded, bushy shape gives it a naturally balanced appearance that works well both on its own and in larger plantings.
The flowers are described with a fruity, sweet scent and bloom repeatedly from spring through frost. Double Knock Out® grows about 3–4 feet tall and wide and combines strong disease resistance with heat and drought tolerance. Its dependable reblooming and adaptable shrub habit make it especially useful for mixed beds, group plantings, and landscapes where season-long color is wanted.
Pot Size: 2 Gallon
Color: Cherry red
Bloom Size: Approximately 3 inches
Petal Count: 18–24 petals
Fragrance: Fruity and sweet
Bloom Habit: Repeat flowering from spring through frost
Height: Approximately 3–4 ft.
Width: Approximately 3–4 ft.
Growth Habit: Bushy and rounded
Foliage: Deep purplish green
Disease Resistance: Strong
Sun Exposure: Full sun
Water Needs: Low water use; water regularly until established
Hardiness Zones: 5–11
Environmental Tolerance: Heat tolerant and drought tolerant
Best Uses: Individual specimens, group plantings, mixed perennial and shrub beds, and gardens of all sizes
Special Features: Full double flowers and reliable repeat blooming from spring through frost
Breeder: Will Radler
Introduced: 2004
US Patent No.: PP16,202
Registration Name: Radtko
Awards: American Rose Trials for Sustainability (A.R.T.S®), UC Davis Blue Ribbon™
Collection: The Knock Out® Family of Roses
