Knock Out Rose (Rosa 'Radrazz') | Low-Maintenance Landscape Rose

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Knock Out Rose

Rose Shrub 'Knock Out Double Pink'

A revolutionary, low-maintenance landscape rose with non-stop blooming (no deadheading), exceptional disease resistance, and three classic color choices: double pink, double red, and white.

$72.00

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Size, shape and branching naturally vary

Description

Rosa Knock Out Series is a revolutionary line of landscape roses prized for their exceptional disease resistance, non-stop blooming, and low-maintenance, self-cleaning habit. Developed by rose breeder William Radler, these deciduous shrubs produce waves of single to semi-double flowers from late spring through fall without deadheading. Available in three classic colors, they form tidy, rounded mounds of dark, purple-green, disease-resistant foliage. Exceptionally adaptable, cold-hardy, and shade tolerant, they are an outstanding choice for mass plantings, borders, foundation plantings, hedges, and containers.

Quick Facts

Processed facts

Mature height: 3-4 ft
Mature spread: 3-4 ft
Light: Full sun to partial shade (tolerates shade)

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Flower Colors: Double Pink (Rosa 'RADtko'), White (Rosa 'Radwhite' — also called 'White Knock Out'), Double Red (Rosa 'RADrazz' — the original Knock Out)
Foliage: Deep purple-green, disease-resistant leaves; dense, rounded habit
Growth Rate: Fast
Hardiness Zones: USDA 4-11 (zones 1-13 per some sources, but reliably 4-11)
Core Benefits: Self-cleaning (no deadheading), excellent disease resistance (black spot, powdery mildew), very long bloom season (spring to frost), cold hardy, shade tolerant, low maintenance.
Best Uses: Mass plantings, borders, foundation plantings, hedges, containers, low-maintenance landscapes, commercial plantings.

Faqs

Q: How long does Knock Out® Rose bloom?
A: It has an exceptionally long bloom season, typically from late spring through the first hard frost, producing waves of flowers without deadheading.

Q: Is it really disease resistant?
A: Yes, it is highly resistant to the most common rose diseases, including black spot and powdery mildew, making it a very low-maintenance choice.

Q: Does it need full sun?
A: While it performs best in full sun (6+ hours), it is remarkably tolerant of partial shade and will still bloom, unlike many other roses.

Q: Is it self-cleaning?
A: Yes, it is self-cleaning, meaning it drops its own spent petals and hips, so no deadheading is required to keep it blooming.

Q: Is it cold hardy?
A: Yes, it is exceptionally cold hardy, reliably surviving in USDA zones 4-11. It can also be grown in zone 3 with winter protection.

📍 Primary Delivery Area · San Francisco Bay Area

Local delivery across the Bay Area — and beyond.

San Francisco Bay Area is our primary local delivery market. Victory Nursery also serves additional California markets and selected extended delivery areas by arrangement.

Regular local delivery: San Francisco, Peninsula, South Bay, East Bay, Marin, Tracy / Mountain House and surrounding service areas.

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5 Gallon

A popular size for shrubs, screening plants and young trees. Large enough to make an immediate difference in the garden while still manageable for most residential projects.

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Gallon describes the container size, not a guaranteed plant height. Individual plants vary. Contact our nursery for current measurements.

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