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Knock Out Roses

Red Double Knock Out Rose

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$21.98
  • 18-24 petals for deep red color and emerald green foliage
  • Matures to 4-5' H x 4-5' W
  • Hardy in USDA Zones 5 - 11
  • Plant in full sun
Pot size

Description

The Red Double Knock Out Rose has quickly become a favorite for gardeners all over the U.S. and beyond. From the same breed that created the original Knock Out Rose, the Double Knock Out packs twice the punch with twice the petals. Traditionally, each medium-sized bloom will range from 18-24 petals. From spring to fall, the Red Double Knock Out Rose produces velvety red double blooms that are deeply reminiscent of classic roses. These gorgeous blooms just keep on popping up for nearly the entire growing season, and they're perfect for anyone looking for a truly reliable bloomer. Additionally, purplish-green foliage creates an attractive display even without blooms. Furthermore, Knock Outs are self-cleaning, meaning that there's no need to deadhead them, although you certainly can if you so desire.

*The Red Double Knock Out Rose is a deciduous/semi-evergreen plant and will go dormant during the winter months. When this plant is ordered during the Fall/Winter expect seasonal foliage decline(discoloration, spots, leaf drop) or the plant to arrive completely dormant.*

Red Double Knock Out Rose Care

These landscape shrub roses are hardy from USDA Zones 5-11. Once established, Red Doubles are generally low maintenance but will require some seasonal pruning and watering in dry spells. These Knock Outs perform best when planted in full sun to part shade in well-drained garden soil. With a mature height of 3-4 feet H x 3-4 feet Wide, this rose won't engulf your entire garden.

Gardeners that prefer a carefree rose experience will appreciate the Double Knock Out Rose. For example, they're naturally resistant to black spot, and they feature impressive winter hardiness. Some gardeners even just trim them back and fertilize them in spring and don't touch them again until next year. A quality organic or granular rose fertilizer will help them get off on the right foot in spring.

Try them out as a colorful hedge or foundation planting, they'll keep your landscapes full of blooms almost all growing season long. Conversely, plant them in a garden bed with annuals and perennials as a specimen plant.

Click Here for Information on Winter Rose Dormancy

Click Here for Information on Pruning Knock Outs from Southern Living

Care & Use

Getting Started: Understanding Your New Plant

Review your plant's information on our website or the tag that comes with it. Be mindful of sunlight preferences, soil type, and spacing needs.

Our plants are adaptable but grow best in the correct USDA Zones. Click here to learn more about your USDA Zone.

Planting Instructions

Dig a Hole

First, dig a hole three times the width of the root ball of your plant. This makes it easier for the root system to spread out quickly. Dig the hole deep enough that your plant will sit level with or slightly above the ground around it.

Amend Your Soil

Mix your native soil with rich gardening soil to provide extra nutrients and support plant growth. If your soil is clay-heavy, we recommend mixing your native clay soil with equal parts of Pine Bark mulch to improve drainage and the overall breathability of your soil.

Place Your Plant

Examine the roots. If they appear tightly bound, gently coax them apart; this ensures they can spread into the new soil. Place your plant in the hole so the top of the rootball is even with the surrounding soil—Backfill around it with the amended soil mixture. The roots need access to oxygen for your plant to thrive, so do not cover the rootball; place soil around it.

Mulch Your Plants

Top the soil beneath your plant with 3-4 inches of mulch to help it retain moisture. Be careful not to cover the rootball - your new plants roots need access to oxygen.

Water Your Plant

Soak the plant with a hose afterward to hydrate the plant, as well as get the soil and mulch situated. Develop a regular watering schedule based on your plant's needs and local weather patterns. Remember, over watering is just as, if not more, harmful than under watering.

Spacing Recommendations

Spacing Your Red Double Knock Out Rose

Space Your Red Double Knock Out Rose 3 feet apart for best results.

  • Scientific Name
    Rosa 'Radtko'
  • Hardiness Zone
    5, 6, 7, 8, 9, 10, 11
  • Sun Exposure
    Full Sun
  • Evergreen or Deciduous
    Deciduous
  • Features
    Disease Tolerant, Flowering, Heat Tolerant, Reblooming, Sun Loving
  • Feature Color
    Green, Red
  • Uses
    Accent, Border, Container, Mass Planting, Mixed Garden Bed, Specimen
  • Water Needs
    Medium
  • Bloom Season
    Fall, Spring, Summer

Growing Zones : 5, 6, 7, 8, 9, 10, and 11

Map of USDA Zones 5-11
Knock Out Roses with red flowers in the landscape

Knock Out Roses

Knock Out Roses Deliver nearly endless blooms from spring until fall. These roses were bred to be vigorous growers in the landscape. With a rainbow of colors, you're sure to find a variety of Knock Out that suits your landscape.

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Red Double Knock Out Rose
Knock Out Roses

Red Double Knock Out Rose

From $21.98

The Red Double Knock Out Rose has quickly become a favorite for gardeners all over the U.S. and beyond. From the same breed that created the original Knock Out Rose, the Double Knock Out packs twice the punch with twice the petals. Traditionally, each medium-sized bloom will range from 18-24 petals. From spring to fall, the Red Double Knock Out Rose produces velvety red double blooms that are deeply reminiscent of classic roses. These gorgeous blooms just keep on popping up for nearly the entire growing season, and they're perfect for anyone looking for a truly reliable bloomer. Additionally, purplish-green foliage creates an attractive display even without blooms. Furthermore, Knock Outs are self-cleaning, meaning that there's no need to deadhead them, although you certainly can if you so desire.

*The Red Double Knock Out Rose is a deciduous/semi-evergreen plant and will go dormant during the winter months. When this plant is ordered during the Fall/Winter expect seasonal foliage decline(discoloration, spots, leaf drop) or the plant to arrive completely dormant.*

Red Double Knock Out Rose Care

These landscape shrub roses are hardy from USDA Zones 5-11. Once established, Red Doubles are generally low maintenance but will require some seasonal pruning and watering in dry spells. These Knock Outs perform best when planted in full sun to part shade in well-drained garden soil. With a mature height of 3-4 feet H x 3-4 feet Wide, this rose won't engulf your entire garden.

Gardeners that prefer a carefree rose experience will appreciate the Double Knock Out Rose. For example, they're naturally resistant to black spot, and they feature impressive winter hardiness. Some gardeners even just trim them back and fertilize them in spring and don't touch them again until next year. A quality organic or granular rose fertilizer will help them get off on the right foot in spring.

Try them out as a colorful hedge or foundation planting, they'll keep your landscapes full of blooms almost all growing season long. Conversely, plant them in a garden bed with annuals and perennials as a specimen plant.

Click Here for Information on Winter Rose Dormancy

Click Here for Information on Pruning Knock Outs from Southern Living

Pot size

  • 1 Gallon
  • 2 Gallon
  • 3 Gallon
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