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Rose Type: Shrub Rose
White Knock Out® is a compact landscape shrub rose covered with crisp white, single-petaled flowers accented by prominent golden stamens. The blooms measure approximately 3½ inches across and feature five petals, creating a simple, open flower form that contrasts beautifully against very dark matte-green foliage, with new growth that can emerge nearly black.
Blooming repeatedly from spring through frost, White Knock Out® develops a compact, bushy plant approximately 3–4 feet tall and wide. Its flowers carry a light floral to citrus fragrance, while very strong disease resistance, heat tolerance, and documented drought tolerance make it a practical landscape rose. It works equally well as an individual specimen, planted in groups, or combined with other roses, shrubs, and perennials.
Pot Size: 2 Gallon
Color: White with Golden Stamens
Bloom Size: Approximately 3½ inches
Petal Count: Approximately 5
Fragrance: Light Floral to Citrus
Bloom Habit: Repeat Blooming from Spring to Frost
Height: 3–4 feet
Width: 3–4 feet
Growth Habit: Compact, Bushy
Foliage: Very Dark Matte Green; Young Foliage Nearly Black
Disease Resistance: Very Strong
Sun Exposure: Full Sun
Water Needs: Low; water regularly until established
Hardiness Zones: 4–11
Environmental Tolerance: Heat-tolerant; drought-tolerant
Best Uses: Landscape plantings, garden beds, borders, mass plantings, mixed plantings
Special Features: Pollinator-friendly, exceptionally dark foliage, long flowering season
Breeder: Will Radler
Introduced: 2009
US Patent No.: PP20273
Registration Name: RADwhite
Awards: Rose Hills Memorial Park International Rose Trials; American Rose Trials for Sustainability (A.R.T.S®); UC Davis Blue Ribbon™
Collection: The Knock Out® Family of Roses
Rose Type: Shrub Rose
White Knock Out® is a compact landscape shrub rose covered with crisp white, single-petaled flowers accented by prominent golden stamens. The blooms measure approximately 3½ inches across and feature five petals, creating a simple, open flower form that contrasts beautifully against very dark matte-green foliage, with new growth that can emerge nearly black.
Blooming repeatedly from spring through frost, White Knock Out® develops a compact, bushy plant approximately 3–4 feet tall and wide. Its flowers carry a light floral to citrus fragrance, while very strong disease resistance, heat tolerance, and documented drought tolerance make it a practical landscape rose. It works equally well as an individual specimen, planted in groups, or combined with other roses, shrubs, and perennials.
Pot Size: 2 Gallon
Color: White with Golden Stamens
Bloom Size: Approximately 3½ inches
Petal Count: Approximately 5
Fragrance: Light Floral to Citrus
Bloom Habit: Repeat Blooming from Spring to Frost
Height: 3–4 feet
Width: 3–4 feet
Growth Habit: Compact, Bushy
Foliage: Very Dark Matte Green; Young Foliage Nearly Black
Disease Resistance: Very Strong
Sun Exposure: Full Sun
Water Needs: Low; water regularly until established
Hardiness Zones: 4–11
Environmental Tolerance: Heat-tolerant; drought-tolerant
Best Uses: Landscape plantings, garden beds, borders, mass plantings, mixed plantings
Special Features: Pollinator-friendly, exceptionally dark foliage, long flowering season
Breeder: Will Radler
Introduced: 2009
US Patent No.: PP20273
Registration Name: RADwhite
Awards: Rose Hills Memorial Park International Rose Trials; American Rose Trials for Sustainability (A.R.T.S®); UC Davis Blue Ribbon™
Collection: The Knock Out® Family of Roses
