Rose True

About this plant

The White Knock Out Rose is a standout in any garden, celebrated for its prolific and consistent blooming of pure white, single flowers from late spring until the first hard frost. These elegant blossoms, often with a hint of yellow stamens, provide a striking contrast against its dark, disease-resistant foliage, making it a beautiful focal point or a versatile addition to mixed borders and mass plantings. Renowned for its incredible hardiness and self-cleaning nature, 'White Knock Out' requires minimal pruning and is exceptionally resistant to common rose diseases like black spot and powdery mildew. Its compact, bushy habit ensures a tidy appearance throughout the season, delivering high impact with very little effort. Perfect for both novice and experienced gardeners, this rose offers continuous beauty without the fuss traditionally associated with roses. Plant it in groups for a dazzling white display or as a sophisticated specimen plant.

Installation timing

When we're in season, outside of the winter months, our goal is to get your plants installed within about two weeks. That window gives us enough time to secure your plants from our supplier and find a spot on the schedule. Throughout the process we stay in touch through notifications and your existing client portal on the main A Cut Above website, which is separate from this landscaping plants shop.

Care & maintenance

Requires minimal care; an annual light pruning in late winter or early spring is sufficient to maintain shape and encourage new growth. No need to deadhead as it is self-cleaning. Fertilize in early spring with a balanced rose fertilizer for optimal blooming. Mulch around the base to retain moisture and regulate soil temperature.

Watering suggestions

Proper watering is the single most important factor in your plant's survival after installation. Newly installed plants have a limited root system and rely on you for consistent moisture while they establish.

• First 2 weeks: Water deeply every day (or every other day in cooler, wet weather), soaking the root ball and surrounding soil.
• Weeks 3–12: Water deeply 2–3 times per week, adjusting for rain, heat, and soil drainage.
• After establishment: Water deeply about once a week during the growing season, and more often in extreme heat or drought.
• How to check: Stick a finger 2–3 inches into the soil near the roots — if it's dry, it's time to water. Deep, less-frequent watering encourages strong roots; shallow daily sprinkles do not.
• Avoid: Overwatering (soggy, waterlogged soil) is just as harmful as underwatering and can drown roots.

Watering needs vary by plant, season, soil, and exposure. Because proper watering is the customer's responsibility after installation, please make sure you understand and can follow these suggestions before ordering.

Good to know: plants and trees purchased from and installed by A Cut Above include a one-year limited warranty from the date of installation. Because plant survival depends heavily on proper watering and care after installation, losses caused by improper care, neglect, animal or chemical damage, or extreme weather are not covered, and we must be given the chance to inspect a struggling plant before it's removed or replaced. Coverage is one replacement per plant. Read our warranty info.