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Shrubs & Hedges

Double Knock Out® Rose

Rosa 'Radtko'

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.

  • This cultivar is more resistant to black spot, rust, and mildew than any other variety
  • It's also resistant to pests, making harsh sprays unnecessary
  • This improved variety will even grow in the shade, giving you more areas to plant
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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. 

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.

Elevate the elegance of your garden with the effortless Double Knock Outs!

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 Sun
Growth Rate:Moderate
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 326 reviews

5252
436
322
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19
Paul P.
5/20/2024

Blooms EVERYWHERE.!!!

We got these in a 1 gallon size in Fall of 2022. They took off like ROCKETS!!! Photos are this spring. About a year and a half after planting.

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TDM
5/18/2024
Verified Buyer

Living & Prospering

Three of the four ordered came with partially opened buds and bloomed within a week. The fourth one took a little longer, but is now in bloom as well.

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Sabrina L.
5/4/2024
Verified Buyer

So far so good

I haven’t even had them 2 weeks and I have 5 roses on each bush. Super happy!

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Sherri S.
5/4/2024
Verified Buyer

Perfect

Perfect as always! Never disappoints

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Debi B.
5/3/2024
Verified Buyer

Knock out rose

Awesome

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