David H.Verified Buyer
Fast Growing Trees is now Trees.com!
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
Original price $39.95, sale price $25.95, 35% off
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Size: 1 gallon
Original price $39.95
Sale price $25.95
Ends Monday—20% off EVERYTHING!
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| Discount level | Cart total |
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20% OFF | No minimum |
25% OFF | $400–$599 |
| 30% OFF | $600 or more |
| Sale ends Monday at 11:59PM | |
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Customers Also Viewed
Michael K.Verified Buyer
Love our roses!!!
Sanka P.Verified Buyer
3 years later, it is a showstopper
David H.Verified Buyer
Double knockout roses
Michael K.Verified Buyer
Love our roses!!!
Sanka P.Verified Buyer
3 years later, it is a showstopper
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 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: | AK, AZ, HI |
| Grows Well In Zones: | 5-10 outdoors |
Growing Zones: 5-10 outdoors
(hardy down to -10℉)
Customer Reviews & Photos
4.7
Based on 615 reviews
Karen B.
10/19/2026
Verified Buyer
Double KnockOut Red Rose Shrub
My rose was delivered well packaged, healthy with a few buds on it. Two days after planting it one of the buds opened up to a gorgeous bright red rose. I love it and it will make a beautiful addition to my garden.
10/19/2026
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Donna
10/19/2026
Do these have stickers on
Do these have stickers on them since they are a shrub? This may be a crazy question, but I didn’t know if shrubs and bushes are considered the same thing!
Trees.com Plant ExpertNot a crazy question at all! Yes, "shrub" and "bush" mean the exact same thing, so you're on the right track! And to answer your main question: yes, Double Knock Out® Roses do have thorns (or "stickers") along their stems just like traditional rose bushes. They are famous for being incredibly low-maintenance and disease-resistant, but wearing a sturdy pair of gardening gloves when planting and pruning will keep your hands protected. Happy planting!
10/19/2026
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Katie K.
10/19/2026
Verified Buyer
Healthy and arrived quickly!
Healthy and arrived quickly!
10/19/2026
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laura P.
10/10/2026
Verified Buyer
So far, it is a
So far, it is a great bush
10/10/2026
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Keith T.
10/10/2026
Verified Buyer
So far good. The Japanese,
So far good. The Japanese, I did scrap it back a little. It does show it still alive. So I’ll keep you updated
Trees.com Plant ExpertThanks for the update! We’re glad the scratch test showed signs of life. Keep monitoring it as it settles in and let us know how things look over the coming weeks!
10/10/2026
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