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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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 |
| 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 |
Growing Zones: 5-10 outdoors
(hardy down to -10℉)
Customer Reviews & Photos
Based on 355 reviews
Double knock out roses, thriving from fall arrival yet
Came on time and in good condition, both double knocks out we received in the fall and took immediately, flowering with the warmth we had. One is in morning Sun, other in partial shade.
Very slow grower. Hoping Spring will improve its growth.
Medium experience. Slow but steady wins the race, right? Hoping for the best.
Dried up buds and leaves
I ordered 2 plants and both came almost dried out. 1 of them has no buds or any growing leaves and the other one had a small wilting flower. Not a great experience with this site
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.
Rose Bush
Quick turnaround. Rose is Healthy. Just planted.