Growing Zones: 5-10 outdoors(hardy down to -10℉) 5-10 outdoors
- Mature Height:
- 3-4 ft.
- Mature Width:
- 3-4 ft.
- Growth Rate:
- Botanical Name:
- Rosa 'Radtko'
- Does Not Ship To:
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. This improved variety will even grow in the shade, giving you more areas to plant.
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!
Customer Reviews & Photos
The plants came well packed and were healthy, with open blooms when they arrived. I have planted them in a shady area and they are getting lots of new growth and buds. I would definitely buy again and recommend as a wonderful colorful, addition to my garden.
Nice Roses - Mixed quality with 1 year old plants
Ordered four 1 year old rose plants and 2 were nice size and the other 2 were smaller and one of them came with broken branches which I am nursing back to health. Bought these knock out roses last year - 2 year plants and they are all doing well.
Happy plants and great customer service
Has survived the shipping and
Has survived the shipping and planting so far. Showing signs of growth. Looks like new blooms soon. Was hope ing for faster growth, but it does look like it will survive so far. High heat of summer will tell the tale soon
Too soon to tell. Just planted 1 hour ago.
Plants came quickly and well packed. Planted as directed. My bushes all had thorns- very disappointed as I was told they did not. Hopefully will be beautiful when they grow.
Planting & Care
1. Planting: Choose a well-drained site in full to partial sun (4 to 8 hours of sunlight per day). If you choose partial sun, make sure your plant receives at least 6 hours of direct sunlight each day (afternoon shade is better than morning shade).
Start by digging a hole twice as wide and twice as deep as the root ball. Backfill the soil until you have a hole the same size or slightly larger than the container the rose is in. Plant the rose at the same depth as it is in the container. Space Knock Out Roses 3 feet apart. Mulch the planting site to retain soil moisture and keep competing growth from coming up around the rose bush.
2. Watering: Keep Knock Out Roses moist at all times. Water around the roots rather than overhead (or showering). Generally, this means watering about once or twice weekly, or more often in dry conditions.
3. Fertilizing: Fertilize with an organic rose fertilizer once a month.
4. Pruning: Avoid pruning the Knock Out at all in the first 2 to 3 years. When you do prune, sterilize your sharp pruning shears with hot water or rubbing alcohol. This guarantees a cleaner, healthier cut. Always prune at an angle and not straight across, and start by pruning it back a little in the spring after the last hard freeze.
Most items ship the next business day unless otherwise noted
Estimated Shipping Time: Most orders ship immediately, however some orders may ship in 1-2 business days (we do not ship on the weekends) from date of purchase. As noted on the website, some items are seasonal, and may only ship in spring or fall. Once your order is shipped, you'll receive an email with a tracking number.
|Amount of Order||Shipping Charge|
|Less than $15||$11.95|