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
-
- FREE 1-year Alive & Thrive™ Guarantee
- FREE Shipping on orders over $99
- In stock
Select size
Select quantity
Get an extra 20% off every order—this week only!
Add this item to cart and get 20% OFF on your order with code GROW20
| Discount level | Cart total |
|---|---|
20% OFF | No minimum |
25% OFF | $400–$599 |
| 30% OFF | $600 or more |
| Sale ends 6/2 at 11:59 PM | |
Pay in 4 interest-free installments for orders over $50.00 
Learn more
Customers Also Viewed
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 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.
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 417 reviews
Beautiful
You guys are amazing, the plants I received are healthy and beautiful, I’ve already had a few roses sprout on one bush. Thank you so much for being an amazing company
Ordered 2 and arrive in
Ordered 2 and arrive in good shape and flowering. Better than I expected.
Knock out roses
Arrived quickly and well packaged, beautiful plants. Good sized. Last year I purchased a coral bark maple from you and love love love it!!! Terrific company!!!!
they both arrived with a
they both arrived with a few buds . they haven’t bloomed yet it looks like maybe a few days more
Love them.
Love them.
