White Knock Out® Rose

The White Knock Out® Rose bush is a compact, easy-care shrub that blooms continuously from spring through fall, brightening landscapes with pure white, lightly fragrant flowers. Its striking contrast of crisp blooms against near-black new foliage creates a dense, rounded mound 3–4 feet tall and wide—perfect for low hedges, borders, moon gardens, and small-space plantings. Highly recognized for performance, including multiple 2011 landscape awards, this rose delivers reliable color with self-cleaning blooms that do not require deadheading and excellent resistance to black spot, rust, and powdery mildew. Hardy in USDA Zones 4–11, it thrives in full sun and adapts easily to typical garden soils, making it a dependable choice for both new and experienced gardeners. For best results, plant in a sunny area with 6–8 hours of light. Dig a hole slightly wider than the pot, set the crown level with the soil, water deeply, and apply a 2–3 inch mulch layer while keeping mulch away from the canes. Space plants 3–4 feet apart for a seamless hedge. Keep soil evenly moist during the first season; once established, water weekly during dry periods. Prune in late winter or early spring by cutting back to 12–18 inches to encourage vigorous new growth. Fertilize only after the first bloom flush with a balanced rose food and avoid late-season feeding. In colder climates, add winter mulch protection; in containers, ensure good drainage and consistent moisture during heat. Non-toxic to people and pets, the White Knock Out® Rose also supports pollinators with its open bloom structure, offering months of beauty with minimal care.

Unique Plant Features:

• Produces pure white, lightly fragrant flowers from spring until frost, with self-cleaning blooms that do not require deadheading.

• Forms a dense, rounded mound about 3–4 feet tall and wide, making it perfect for low hedges, borders, or mass plantings.

• Thrives in full sun across USDA Zones 4–11, with strong resistance to black spot, rust, and powdery mildew for healthy foliage.

• Simple annual pruning in late winter keeps plants neat and encourages fresh, vigorous growth; low watering needs once established.

• Non-toxic to people and pets, while its open flowers attract bees and butterflies for added garden life.

Warning: Not for Human or Animal Consumption

To read more from the FDA, click here.

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