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Double Knock Out® Rose Shrub

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 Shade
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 352 reviews

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Ariel K.
8/25/2024
Verified Buyer

Arrived smushed but lovely

The box arrived smooshed and smooshed in pot it came in. But we put it in the ground just fine. Guess we’ll find out how well it does later. Hopefully it’ll be beautiful.

Fast Growing Trees Plant ExpertDear Ariel, thank you for your feedback. We apologize for the packaging mishap. We'll make sure to relay this to our carrier. We hope your plant thrives and brings beauty to your garden. Let us know if you need any help.
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Sudani
8/19/2024

Rose Bush

Quick turnaround. Rose is Healthy. Just planted.

Media from review #1
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Douglas R.
8/17/2024
Verified Buyer

The plants arrived the worst

The plants arrived the worst for wear. At any rate I did replant them and they are doing great now. I hope erect a cold frame this winter a give them a tad more growing time. Next year I hope reorder older plants and incorporate them in my scheme with a longer time to establish themselves.

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Brian H.
8/17/2024
Verified Buyer

Nice Plant

I planted both rose bushes and within a week I had flowers.

Media from review #1
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Darlene H.
8/17/2024
Verified Buyer

Roses

My roses are still recoping the nasty ride fed ex gave them. They are slowly coming back.

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