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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| Discount level | Cart total |
|---|---|
20% OFF | $200–$399 |
25% OFF | $400–$599 |
| 30% OFF | $600 or more |
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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 Sun |
| Growth Rate: | Moderate |
| 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 338 reviews
Love the Double Knockout Blooms
I purchased a shrub in early spring, and once the shrub got settled it has cycled through multiple blooms throughout the season. I loved it so much, I ordered 2 more.
The rose bushes are doing well, I've had some initial growth and now have some small rose buds. Looking for them to 'take off' and get larger!
Plants arrived in good condition. I used th growth pellets as noted.
Truly Great Rose Bush
I am absolutely thrilled with my Double Knockout Rose bushes! These roses are not only stunningly beautiful but also incredibly resilient. We have six of them in our yard, and they have exceeded all our expectations in terms of disease resistance and overall hardiness. Unlike other roses we've tried, these have shown remarkable resistance to common issues like black spot and powdery mildew, making them a joy to maintain. The vibrant blooms add a spectacular splash of color to our garden, and they keep blooming continuously, creating a delightful display throughout the growing season. The bushes are robust and seem to thrive with minimal care, which is perfect for both novice and experienced gardeners. While we started with the one-gallon size, we've found that the three-gallon plants establish much more quickly and give a more immediate impact. The larger size is definitely worth the investment if you’re looking to fill your garden with beautiful, blooming roses faster. I highly recommend Double Knockout Roses to anyone looking for gorgeous, low-maintenance, and disease-resistant roses. They have truly transformed our garden into a vibrant, colorful haven. Please see knockout planted in between our 3 gallon climbing roses
Nice but wrong color
My plant is doing well and I am happy with the quality. However, now that it's blooming I see I was sent pink instead of red, which is disappointing.
Exceptional Quality
We ordered four 5-gallon mature plants and they are exceptional! Even after traveling from South Carolina to California over six days. I also purchased the starter pellets and, although the plants had taken a bit of a beating in transit, they brightened right up after transplanting and watering. Very happy with this purchase. Highly recommend.