White Knock Out? Rose - Rosa 'RADwhite'

White Knock Out® Rose (Rosa 'RADwhite')

The White Knock Out® Rose is a compact flowering shrub that delivers abundant pristine white blooms from early summer through the first frost. If you buy white knock out roses online from Florida Plant Nursery, you're choosing a plant that combines stunning curb appeal with virtually carefree growing conditions. This award-winning variety has transformed home landscaping by proving that roses don't need to be fussy or high-maintenance.

Landscaping Uses

Plant this versatile shrub along foundation beds, in mixed borders, or as a standalone specimen where its tidy mounded form will anchor your landscape design. Its compact size makes it ideal for smaller yards, containers on patios and decks, or poolside plantings where you want repeated color. Pair it with ornamental grasses or silver-foliaged plants to amplify its white flower display.

Specifications

Height: 3–4 feet
Width: 3–4 feet
Growth Rate: 12–18 inches per year
Sun: Full sun (at least 6 hours direct daily light)
Water: Drought tolerant once established
Soil: Adaptable to most soil types; prefers well-draining conditions
USDA Zones: 5–10

Why Homeowners Love It

• Blooms continuously for up to 9 months—nearly twice the flowering window of typical roses
• Naturally resists diseases and common rose pests without chemical treatments
• Requires no deadheading or extensive pruning to maintain its attractive shape
• Cold hardy to zone 5 and heat-drought tolerant, thriving across diverse climates

Planting & Care

Choose a location with full sun and well-draining soil; amend heavy clay with aged compost to improve drainage. Plant in spring or fall, spacing plants 3–4 feet apart if creating a grouping. In early spring, remove any winter-damaged wood and shape the plant as desired. Once established, water during dry spells but the plant will tolerate extended periods without supplemental irrigation. In cold climates with harsh winters, consider wrapping the base with snow fencing and straw for extra protection.