Alphabetical Plant Listing

Rosa Knock Out® (Shrub Rose)

Rose Knock Out®, Rosa 'Radrazz' PP11836, CPBR#0993, Knock Out® Rose, Shrub Roses,


Blooming its heart out, Rosa Knock Out® is a compact shrub rose which produces abundant clusters of single to semi-double, vibrant cherry-red flowers, up to 3.5 in. across (9 cm), adorned with up to 11 petals. The blossoms do not fade in the heat and stand out against the disease-resistant, dark purplish-green foliage. Blooming continuously from spring until frost, the flowers are followed by decorative orange-red hips. The foliage turns purple to burgundy in fall. Easy to grow, low maintenance, drought tolerant and self-cleaning, this immensely popular shrub rose is an exceptional choice for the landscape and suits every garden and lifestyle.

Rosa Knock Out® belongs to the Knock Out® shrub roses which are known for their compact size, long bloom season, bright colors, profuse flowering, exceptional resistance to blackspot and winter hardiness.

  • Winner of the 2000 All-America Rose Selection - the most prestigious rose award in the USA, and the Cary Award which recognizes plants that are particularly adequate for New England, offer superior landscape appeal, are winter hardy and pest resistant.
  • Grows in a rounded, bushy and well-behaved shrub, up to 3-4 ft. tall and wide (90-120 cm).
  • Best grown in full sun or partial sun, in rich, fertile with adequate moisture, well-drained soils. This rose is noted for its ability to bloom in as little as 3 hours per day of direct sun with excellent disease resistance.
  • An excellent choice for beds, borders where it can be planted among shrubs, annuals and perennials. May be planted in large groups to create a colorful hedge or along a foundation to provide a bright border.
  • Total blackspot resistance makes this shrub a truly disease-free landscape rose.
  • This shrub rose does not require special care. However, for best performance, cut back every year in early spring after the last threat of frost has passed.

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Requirements

Hardiness 5 – 11
Heat Zones 1 – 10
Climate Zones 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, H1
Plant Type Roses
Plant Family Rosa - Shrub Roses, Rosa - Roses
Exposure Full Sun, Partial Sun
Season of Interest Spring (Late)
Summer (Early,Mid,Late)
Fall
Height 3' – 4' (90cm – 120cm)
Spread 3' – 4' (90cm – 120cm)
Spacing 36" – 48" (90cm – 120cm)
Water Needs Average
Maintenance Low
Soil Type Chalk, Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Well-Drained
Characteristics Plant of Merit, Showy, Fruit & Berries
Attracts Butterflies
Garden Uses Beds and Borders, Hedges and Screens
Garden Styles City and Courtyard, Informal and Cottage, Traditional Garden

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Great Plant Combination Ideas with Rosa - Roses

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Photos courtesy Star Roses and Plants

While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.


Requirements

Hardiness 5 – 11
Heat Zones 1 – 10
Climate Zones 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, H1
Plant Type Roses
Plant Family Rosa - Shrub Roses, Rosa - Roses
Exposure Full Sun, Partial Sun
Season of Interest Spring (Late)
Summer (Early,Mid,Late)
Fall
Height 3' – 4' (90cm – 120cm)
Spread 3' – 4' (90cm – 120cm)
Spacing 36" – 48" (90cm – 120cm)
Water Needs Average
Maintenance Low
Soil Type Chalk, Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Well-Drained
Characteristics Plant of Merit, Showy, Fruit & Berries
Attracts Butterflies
Garden Uses Beds and Borders, Hedges and Screens
Garden Styles City and Courtyard, Informal and Cottage, Traditional Garden

Great Plant Combination Ideas with Rosa - Shrub Roses

Guides with Rosa - Shrub Roses

Great Plant Combination Ideas with Rosa - Roses

Guides with Rosa - Roses

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