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Knockout Rose

Knockout Rose

Rosa 'Radrazz'

The Knockout Rose burst onto the landscaping scene in 2000 and has since become one of the most popular rose varieties in the United States and a mainstay in Austin landscaping. It's not hard to see why! Knockouts are low-maintenance beauties that offer months of blooms. Pair that with their heat tolerance, and they're an exceptional addition to properties in Austin.

The Knockout Rose is a perennial shrub that develops thick and strong trunks. The average height of a mature Knockout Rose is about three feet, and the bush can grow to achieve an equal width. However, over the years, this plant has the potential to get much bigger. They have plenty of time to reach heights of up to six feet. These plants have a long lifespan, providing amazing color for your Austin landscaping design for decades with proper care!

When it comes to maintenance, Knockout Roses don’t require much. Regular watering during the first year is beneficial as the plant develops its root system. However, after maturity, they only need supplemental watering during periods of drought.

Knockout Rose Details

  • Plant Type : Perennial, shrub rose
  • Plant Family : Rosa
  • Color : Various
  • Required Lighting : Full sun
  • Average Height : 3 to 6 feet at maturity
  • Watering Requirements : Low to medium, drought-tolerant
  • Soil Preferences : Well-draining
  • Pruning : Annual late-winter pruning to 12 inches tall
  • Fertilization : Balanced fertilizer every 4 to 6 weeks
  • Best For : Containers, hedging and accent/mass planting
  • Benefits : Drought-resistant, disease-resistant and self-cleaning

Many gardeners choose to prune the plant regularly for shaping and height management. But one unique thing about the Knockout Rose is that it’s self-cleaning. The plant drops its spent blooms, requiring no deadheading!

The blooming cycle lasts from late spring through early fall. You’ll see new pops of color every five to six weeks. Many types of Knockout Roses exist, so you can work with your landscaper to get roses with shades of pink, white, red and more!