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Red Knock Out® Rose

Rosa 'Radrazz' Knock Out

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Overview

The Red Knock Out® Rose (Rosa 'Radrazz' KNOCK OUT) is a hardy shrub rose with vibrant, cherry-red blooms. It reaches a maximum size of 4 feet tall and wide, thriving in USDA zones 5 through 11. This low-maintenance variety is disease resistant and blooms continuously from spring until the first frost, providing long-lasting, bold color. Ideal for borders or mass plantings, it requires full sun and well-drained soil.

Sun Full, HalfWater Extra in Summer, MediumZones 6–11Type ShrubClimate Temperate
Red Knock Out® Rose (Rosa 'Radrazz' Knock Out) — With a moderate mature height and spread of about 3 to 4 feet, image 29

Culture

Sun
Full, Half
Water
Extra in Summer, Medium
USDA zones
6–11

Shape & size

Mature height
3–4 Ft.
Mature width
3–4 Ft.

Classification

Type
Shrub
Family
Rosaceae
Climate
Temperate

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Photos (58)

Red Knock Out® Rose (Rosa 'Radrazz' Knock Out) — It reaches a maximum size of 4 feet tall and wide, thriving in USDA zones 5 through 11; particularly to
Red Knock Out® Rose (Rosa 'Radrazz' Knock Out) — red flowers in the garden; it reaches a maximum size of 4 feet tall and wide, thriving in USDA zones 5
Red Knock Out® Rose (Rosa 'Radrazz' Knock Out) — shrub for full or half; providing an alluring attraction for both homeowners and pollinating, image 57
Red Knock Out® Rose (Rosa 'Radrazz' Knock Out) — With a moderate mature height and spread of about 3 to 4 feet
Red Knock Out® Rose (Rosa 'Radrazz' Knock Out) — blooming from spring until the first hard frost; this low-maintenance variety is disease resistant and
Red Knock Out® Rose (Rosa 'Radrazz' Knock Out) — shrub for full or half; providing an alluring attraction for both homeowners and pollinating insects such
Red Knock Out® Rose (Rosa 'Radrazz' Knock Out) — particularly to black spot and powdery mildew; red flowers in the garden
Red Knock Out® Rose (Rosa 'Radrazz' Knock Out) — which can be as large as 3 to 3.5 inches in diameter; pruning should be done annually in late winter or
Red Knock Out® Rose (Rosa 'Radrazz' Knock Out) — This variety presents a vivid display of rich cherry red flowers; which can be as large as 3, image 45
Red Knock Out® Rose (Rosa 'Radrazz' Knock Out) — shrub with red blooms; blooming from spring until the first hard frost, image 56
Photographs by 6 contributors

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