Double Knock Out® Rose Shrub

Rosa 'Radtko'

  • One of the most popular rose varieties, blooming consistently summer through fall
  • More resistant to pests, black spot, rust, and mildew than any other variety
  • Improved variety will even grow in the shade, giving you more areas to plant
$3695
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Double the Petals on Double the Roses

Why Double Knock Out® Roses?

Boasting one of the longest blooming periods available, from early summer to late fall, the Double Knock Out® Rose gives you all the amazing characteristics of the original Knock Out® Rose - just with more petals and even better disease resistance.

Even better? Not only is this cultivar more resistant to black spot, rust, and mildew, but it's also more resistant to insects. That means the Double Knock Out® is virtually maintenance-free, especially since it grows thickly without pruning. Plus, it thrives in containers or in the ground. 

About Knock Out® Roses: First introduced in 2000, the “Knock Out” family of roses has revolutionized the rose industry and remains the most prolific flowering shrub ever introduced. Each of the varieties in the brand are disease resistant, require minimal maintenance, and produce continuous blooms that last from spring to fall.

Why Fast-Growing-Trees.com is Better

With plenty of blooms to spare, you'll enjoy fresh cut roses in your home from spring until fall. And depending on your soil conditions, your blooms can range from dark to light red, offering even more versatility. And we prune your Knock Out® Roses before we ship them to give you an explosion of growth. Because of our hard work at the nursery and tried-and-true shipping process, you get a greater chance of success at home.

Looking for more roses to add to your collection? Check out our guide to popular types of roses.

Full Planting & Care Instructions

Product Details

Mature Height:3-4 ft.
Mature Width:3-4 ft.
Sunlight:Full Sun, Partial Shade
Bloom Season(s):Spring Blooming, Summer Blooming, Fall Blooming
Growth Rate:Moderate Growing
Botanical Name:Rosa 'Radtko'
Does Not Ship To:AZ
Grows Well In Zones:5-10 outdoors
grow zone map

Growing Zones: 5-10 outdoors

(hardy down to -10℉)

Customer Reviews & Photos

4.6

Based on 403 reviews

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110
Alex H.
5/15/2025
Verified Buyer

Arrived in great condition

Arrived in great condition and are already starting to bloom.

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Diane M.
5/14/2025

Planted

I finally was able to plant mines. I am hoping they get rooted and grounded. Fingers crossed

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Fast Growing Trees Plant ExpertHello Diane! Thank you for sharing your experience with us. We're excited to hear that you've planted your Double Knock Out Rose Shrubs and we're crossing our fingers for successful rooting and grounding. Can't wait to hear how it goes!
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Donna
5/13/2025

Happy customer

Great customer service

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Brandi M.
5/12/2025
Verified Buyer

Double Knock Out Rose Shrub

The shrubs arrived in excellent packaging. Very healthy plants. I'm eager to watch them grow into beautiful shrubs.

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Susan B.
5/12/2025
Verified Buyer

Treasures!

They look perfect positioned throughout the front and side gardens. Our recent rains are nourishing them for a great start.

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