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Double Knock Out® Rose Rosa 'Radtko'


  • Double Knock Out® Rose
  • Double Knock Out® Rose
  • Double Knock Out® Rose
  • Double Knock Out® Rose
  • Double Knock Out® Rose

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.

  • 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.
Regular price $29.95 Sale price
$29.95

Size:
  • 1 Year Plant
  • 4-Pack (1-Year) 8% Off
  • 2 Year Plant
  • 4-Pack (2-Year) 10% Off
  • 3 Year Plant
Quantity:

  Call to Order! (800) 973-8959


Product Details

Mature Height: 3-4 ft.
Mature Width: 3-4 ft.
Sunlight: Full-Partial
Growth Rate: Moderate
Botanical Name: Rosa 'Radtko'
Does Not Ship To: AZ
Grows Well In Zones: 5-10 outdoors
You are in Growing Zone: #

    
    
    
      5-10 outdoors
    
   Map

Growing Zones: 5-10 outdoors

(hardy down to -10℉)

Product Description

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!

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: Prune every spring, all the way back to 12 inches off the ground, after it is established. 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.

Shipping Details

Shipping Alert:

You can still order, but due to cold weather, we have delayed shipping to the areas shaded on the map below. We want your new plant to thrive right out of the box, so we will wait on shipping your order until the weather is ideal. This includes anyone in Growing Zones 3, 4, 5 & 6. If you are unsure of your growing zone, visit our Growing Zone Finder.

Some plants are not available for immediate shipment, and delayed delivery is noted.

We will resume normal shipping in the Spring. Please see the table below for your approximate ship date.

Zone Map
Growing Zone Shipping Resumes
Zones 3 & 4 Week of May 3rd
Zone 5 Week of April 10th
Zone 6 Week of March 29th
Zones 7 - 11 Ships Now!

Estimated Shipping Time: Most orders ship immediately. 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
$15.00-$23.99 $13.95
$24.00-$39.99 $16.95
$40.00-$79.99 $19.95
$80.00-$98.99 $24.95
$99.00-$128.99 $29.95
$129.00-$148.99 $39.95
$149.00-$178.99 $49.95
$179 + FREE SHIPPING!

Customer Reviews & Photos

Customer Reviews
4.5 Based on 202 Reviews
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Filter Reviews:
A
02/24/2021
Anonymous
United States United States
I recommend this product
Holding on !

Since there is still snow on the ground here in Pennsylvania, I am keeping my roses on life support in the basement . Hopefully they’ll survive until spring

NS
01/20/2021
nelson s.
United States United States
I recommend this product

I planted it outside already and it appear to be doing just fine..I hope I didn't make a mistake to have planted it so early since I'm in zone 8...

TR
01/07/2021
Terry R.
United States United States
I recommend this product
A New Beginning!

Received our two 3-year old double knockout rosebushes about 2 weeks ago. They were kind of sad looking at the time but showed some signs of life. In a few days, they started to look very healthy. We now have our first absolutely beautiful red rose bloom! We’re very pleased with our purchase! I tried to copy and paste a picture on this review but was unable to do so.

Fast-Growing-Trees.com Double Knock Out® Rose Review
DE
12/05/2020
Dr E.
United States United States
I recommend this product
A rose by any other name -

Ask me how does my garden grow...I'd say, there are none of the likes of bluebells, perhaps a few seashells, and plenty "Fast Growing Trees.com" to fill the land. When my roses arrived, they looked fantastic! Even a few of the bushes wore the last remants of summer's fragrant blooms. In the years to come, I look forward to the beauty of these rose bushes, to brighten my days with their soft scent and many smiling red faces. Thanks for the expert assistance RS - You are wonderful.

A
11/05/2020
Anonymous
United States United States
I recommend this product
Double Knock Out Rose

I’m a rose enthusiast and am hoping that this one will survive and be of lasting beauty. It is difficult to tell whether this is the outcome at this time, though I am wishing for the best.

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