Knock Out® Red Rose

Rosa Knock Out® (Shrub Rose)

Rosa hybrida ‘Radrazz’, commonly known as Knock Out® Red Rose, is a popular and low-maintenance shrub rose that has revolutionized rose gardening. This deciduous shrub is celebrated for its vibrant cherry-red blooms, which appear in clusters and continue from spring until frost. The flowers are single to semi-double, with a saucer-like shape and a light fruity fragrance. They contrast beautifully with the glossy, dark green foliage, which turns burgundy in the fall, adding seasonal interest. Knock Out® Red Rose is self-cleaning, meaning spent blooms naturally fall off, eliminating the need for deadheading. Its compact size, reaching 3–4 feet in height and width, makes it ideal for hedges, borders, or as a standalone specimen in gardens.

Knock Out® Red Rose thrives in USDA zones 5–11 and is highly adaptable to various growing conditions. It prefers full sun but can tolerate partial shade, requiring at least six hours of direct sunlight daily for optimal blooming. This rose grows well in loamy, well-drained soils with a slightly acidic to neutral pH. It is drought-tolerant once established and highly resistant to common rose diseases such as black spot and powdery mildew. Its heat tolerance and ability to bloom continuously make it a favorite among gardeners in warmer climates. Knock Out® Red Rose is also deer-resistant and attracts pollinators, contributing to a vibrant and eco-friendly garden.

Care Instructions

• Light Requirements: Plant in full sun for best flowering results; tolerates partial shade.
• Soil Preferences: Use loamy, well-drained soil with a slightly acidic to neutral pH. Prepare the soil with compost for added nutrients.
• Watering Needs: Water deeply and regularly during the first growing season to establish roots. Reduce watering frequency once established.
• Fertilization: Apply a balanced rose fertilizer in early spring and mid-summer to encourage healthy growth and blooms.
• Pruning Guidelines: Prune annually in late winter or early spring to shape the plant and remove dead or damaged branches.

Knock Out® Red Rose is a reliable and stunning addition to any garden. Its continuous blooms, disease resistance, and ease of care make it a perfect choice for gardeners of all skill levels.