Free Shipping on Orders $79+
(enter: OCT79 at checkout)

You are in Growing Zone:

6

Clear
  Hurry... (Ends in )

Checkout Shopping Cart: (0) Items
  • Double Knock Out® Rose for Sale

    Double Knock Out® Rose for Sale

 
*images shown are of mature plants

Double Knock Out® Rose

Rosa 'Radtko'

$24.95

1. Size

Size
  • Delivered by: Wednesday, October 24
  • Shipped in 1 gallon pot (6"-10" tall)

2. Quantity

3. Extras

-t- Planting Mix
Double Knock Out® Rose Planting Mix

Helps your Double Knock Out® Rose get established in a fraction of the time, become more drought tolerant, and grow faster. Here's how:

Beneficial Bacteria... It's like a Probiotic for your tree... creating an explosion of fine hair roots that vastly improves nutrient and water uptake.

Coarse Organic Compost... loosens and improves all types of soils while promoting proper pH levels. You get better drainage and moisture retention.

Microbial Fertilizers... including Sea Kelp, Yucca, and 100 other elements proven to gently feed your tree without burning the roots.

Use 1 bag of Planting Mix for each plant ordered.


Soil Contents
$7.95
-t- Root Rocket™ Fertilizer
Root Rocket™ Transplant Fertilizer

2oz. Packet

Get your new plants off to the right start by using Root Rocket™ Transplant.

This soil amendment contains 16 strains of mycorrhizal fungi, biostimulants, beneficial bacteria and Horta-Sorb® water management gel.

Simply sprinkle the product into the planting hole adjacent to the root ball when planting.

The organisms will start to work right away supplying the roots with much needed nutrition.

The specially formulated Horta-Sorb® will reduce transplant stress and aid in water retention.

APPLICATION:
1 packet per plant

Root Rocket Fertilizer
$5.95
-t- TreeGator® Jr. Watering Bag
TreeGator® Jr.


When you’re making an investment and effort in planting new trees in your landscape, you can assure their survival and growth by using TreeGator® - a truly simple and innovative drip irrigation system in a bag.

With hot summers and droughts the norm around the USA, TreeGator® is an absolute necessity to protect your new trees and shrubs.

TreeGator® is super easy to install without any tools, and it can easily be filled up with a standard garden hose or can even be connected to a rain barrel!

It's a super time saver that takes the worry out continually remembering whether you've watered your new tree or not. Plus, all the water that goes into the drip bag is used up with no waste, so TreeGator® is environmentally friendly with regard to water use.

Tree Gator
$19.95
-t- Root Rocket™ Launcher
Root Rocket Launcher

Explosive Growth for All of Your Plants

Rocket your lawn and plants to new heights with Root Rocket™ Launcher! All-natural and all-in on healthful benefits, Root Rocket™ is a propriety blend of nutrients that have been horticulturalist-tested and proven to help young plants transition from nursery to soil or a more permanent container. Root Rocket™ Launcher improves on that special mix with a water-soluble twist – so your lawn and garden can now be sprayed with the naturally-crafted solution you love for soil. And this pre-made care package in a handy drawstring bag makes it all the more effortless to keep your plants lush and vibrant, with the following items included: Root Rocket™ Launcher solution Root Rocket™ Launcher spray bottle 50-ft. nylon retractable hose

$24.95
Add a Decorative Pot

Growing Zones: 5-10
(hardy down to -10℉)



Growing Zones 5-10
You are in Growing Zone: 6

Mature Height:

3-4 ft.

Mature Width:

3-4 ft.

Sunlight:

Full-Partial

Spacing:

4 ft.

Growth Rate:

Moderate

Drought Tolerance:

Great

Botanical Name:

Rosa 'Radtko'

Does Not Ship To:

AZ

Double the Petals on Double the 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, too.

Amazingly, horticulturists have improved the original, incredible variety to create the Double Knock Out Rose. And when these amazing little botanicals are planted in rows, they reach approximately 4 feet in height, making a great hedge or boundary. Use them to add color to your home or a wonderful scent to your back patio.

Plus, this cultivar thrives in containers or in the ground. This improved variety will even grow in the shade, giving you more areas to plant. Best of all, improved cold hardiness means it stays lush in growing zones 5 to 10.

With plenty of blooms to spare, you'll enjoy fresh cut roses in your home from spring until fall. Depending on your soil conditions, your blooms can range from dark to light red. And we prune your Knock Out® Roses before we ship them to give you an explosion of growth shortly after you plant them.

These amazing rose bushes will sell out quickly. We recommend that you order now while supplies are still available. Elevate the elegance of your garden with the effortless Double Knock Outs!





Customers who bought this item also bought...

Customer Reviews

4.3 / 5.0
188 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
119
36
17
6
10
Doing great so far
Received two bushes and the tree. All three are doing great and still blooming even into the 3rd week of Oct. I received mine in Aug. 2018 so they took about 2 weeks to recover from shipping/planting but they came very healthy with blooms on them. Very satisfied.
October 18, 2018
Purchased
4 months ago
Growing Zone:
7
Shipping across the country, and the roses are still in great shape.
Roses came in great condition, and have started blooming as soon as I planted them. I can't wait to see them grow into full sized bushes.Our growing is a 9/10, and they are holding up well to the heat.
Roses after high heat, have been planted for 1 month and are blooming with beautiful small roses.
User submitted image
September 11, 2018
Purchased
2 months ago
Growing Zone:
10
Fast growth and cranks out the roses
Grew fast and keeps cranking out roses in full sun, clay / fairly wet soil. Great plant. I feed it regular Osomocote and prune off the dead flowers, and that’s all it needs!
User submitted image
Added Aug 25, 2018
August 25, 2018
Purchased
1 year ago
Growing Zone:
8
out of 6 one lived
i think it was to hot to ship to nevada the first 3 came dead

the second three only one was of alive. i have no pics

the one that lived has no flowers i hope next summer i

will have flower
August 15, 2018
Purchased
3 months ago
Growing Zone:
7
Pretty
I was initially skeptical about buying them before seeing them, but there really pretty. The flowers on one side appear to have a red tone, while one the other side appear to be more pink. No idea why, but it’s really beautiful
August 14, 2018
Purchased
3 months ago
The rose is doing well. Many beautiful flowers are popping up. I highly recommend it for your garden!
August 14, 2018
Purchased
3 months ago
PRETTY AND ROBUST
Plants are doing well. Purchased in spring and have had roses on all of them. Looking forward to plant maturing and getting bigger as I know it will have a nice effect on the landscaping with the pink and red colors bursting out.
August 13, 2018
White Plains, NY
Purchased
4 months ago
Beautiful and lots of blooms
I do not like rose bushes however, this one is covered with the most beautiful red flowers and is thriving.
August 12, 2018
Purchased
7 months ago
Growing Zone:
8
Wonderful even brand new!
I just received the new rose bushes only a couple of months ago and two a month ago. All are doing wonderful and growing like weeds. Even newly planted produce constant flowers. Could not have asked for better!
August 8, 2018
Purchased
4 months ago
Growing Zone:
7
Growing strong
This was such a cute little fella when it arrived, and it has since tripled in size and had blooms constantly since it arrived! It took a few days for the few buds that it came with to open up but the darned thing just kept growing and producing more. It's been a real treat to see this vibrant little plant go!
August 8, 2018
Purchased
4 months ago
Growing Zone:
6

Planting & Care



It's Easy to Plant & Care for Your Double Knock Out® Rose


Double Knock Out® Rose Planting Diretions

Knockout roses are easy to grow and do not require special care. They are one of the most disease resistant roses on the market today. They have stunning flower power with a generous bloom cycle (about every 5-6 weeks) that will continue until the first hard frost. All members in Knockout roses family are self-cleaning so there is no need to deadhead. Knockout roses are winter hardy to USDA Zone 5 and heat tolerant throughout the entire U.S. They thrive in almost every area of the country.

Seasonal information: Knockout roses are upright shrubs that form a tidy mound 3 to 4 feet high and bloom from June to the first hard frost. In spring, trim any broken or dead branches. You can shape the Knockout rose at this time. In zones with cold, wet winters, give your Knockout rose winter protection by planting on the leeward side of buildings or walls. Or you can wrap snow fencing loosely around the rose and cover with straw.

Selecting a location: Choose a well-drained site in full to partial sun. If you choose partial sun, make sure your Knockout roses receive at least six hours of direct sun a day (afternoon shade is better than morning shade). If you have clay or sandy soil, work well-rotted manure or compost into the planting site.

Planting instructions:
1) You should start by digging a hole twice as wide and twice as deep as the root ball.
2) Mix the manure or compost with the soil you have removed.
3) Back fill the soil until you have a hole the same size or slightly larger than the container the rose is in.
4) Plant the rose at the same depth as it is in the container.
5) Space Knockout roses plants three feet apart.
6) Mulch the planting site to retain soil moisture and keep competing growth from coming up around the rose bush.

Watering: Keep Knockout roses moist at all times. Water around the roots rather than overhead (or showering).

Fertilization: Fertilize with an organic rose fertilizer once a month. Use organic fertilizer rather than synthetic fertilizers as synthetics can promote weak growth and your rose will have more foliage and less flowers.

Pests and Disease: Knockout roses are resistant to rust, black spot and powdery mildew.

Pruning: Avoid pruning the Knockout roses at all in the first 2 to 3 years. 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. Activate the Knockout roses into growth and blooming by pruning it back a little in the spring after the last hard freeze. Keep the Knockout roses under control or if you want it smaller than it's 3-feet wide by 4-inches tall size by pruning it back in the late summer or early fall. Remove dead or old canes at any time. Also cut very thin canes that might be coming up from the ground. Prune your mature plants by using the 1/3 rule each year in the spring. Remove 1/3 of the oldest canes and any stems that are damaged, diseased or dead.

Planting & Care

Questions & Answers

Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 26 questions Browse 26 questions and 93 answers
Why did you choose this?
Fast-Growing-Trees.com Store
It reminds me of a rose shrub we had outside our first home. I loved that plant.
P A on Oct 19, 2018
The low maintenance and beauty of this hedge enhances the curb appeal of my home year around. Gotta love double knockout roses.
Lawrence J on Sep 26, 2018
It reminds me of a rose shrub we had outside our first home. I loved that plant.
P A on Oct 19, 2018
To add color to a flower bed.
Debbie C on Sep 29, 2018
The low maintenance and beauty of this hedge enhances the curb appeal of my home year around. Gotta love double knockout roses.
Lawrence J on Sep 26, 2018
Everything surrounding this hill will be green in color which would make it very boring
george s on Sep 17, 2018
good reviews
JOSEPH A on Aug 30, 2018
Ordered before. Loved it. Moved and wanted to have in my new front garden
Joanne L on Aug 20, 2018
I bought these once before and am very pleased with my purchase
SUSAN F on Aug 1, 2018
I have yellow and pink knock out, so I wanted a Red, I love how long knock outs bloom
Donna K on Jul 28, 2018
BEAUTIFUL FULL COLOR
RAMONA S on Jul 18, 2018
need a coverage in front of house
charles w on Jul 17, 2018
flowers that bloom all summer
Jon K on Jul 16, 2018
i want to try some roses as a hedge / boundary / fence and these look full and luscious
sheila e on Jul 10, 2018
needed color
Philip R on Jul 10, 2018
They look beautiful
Michael T on Jul 8, 2018
Favorite flower, requires low maintenance and the color.
Maria C on Jul 6, 2018
have some already
shan t on Jul 3, 2018
I purchased this because of rave reviews and the beauty it will add to my yard!! So looking forward to amazing and constant blooming red-hot pink roses. Excited!!!
Linda W on Jul 2, 2018
I love the reviews, -plus if mine turns out half as good as the picture shown here I would be happy. Of course I want it look just as the picture. I just love colors and I have the perfect spot for these too!
OMENA W on Jun 28, 2018
Review from others
kiwanuka m on Jun 28, 2018
The reputation and the color
P A on Jun 19, 2018
I am doing extensive landscaping at a new house I bought and wanted to have several different colors and this one red one is really going to make it POP. (and I love the sale price!!!)
Glenda W on Jun 14, 2018
I’m always working an I needed something that needs little tender love an care which I will take loving care of them because they are so beautiful
Patricia C on Jun 10, 2018
Love red roses. Adds beauty to garden and color to lawn.
Korin P on Jun 9, 2018
It blooms all summer.
Darlene B on Jun 5, 2018
Easy case, great reviews
Suzanne W on Jun 2, 2018
Previous experience with your climbing roses
milagros s on Jun 2, 2018
Now living in TN hills.
S Mitchael D on Jun 1, 2018
color
rach_arm on May 29, 2018
Easy to grow, low maintenance and beautiful!
karen a on May 16, 2018
For their beauty
Nick & Morgan S on May 11, 2018
Got it for mothers day for my MIL.
Natasha B on May 11, 2018
For my wifes MOTHERS DAY GIFT. She gave me 3 beautiful children, Lisa, John Jr & David. We have other Knock Out Red Roses and she desired more
JOHN G on May 10, 2018
Beautiful flowering plant!
Darlene K on May 10, 2018
They are very pretty
MartinHD28 on May 10, 2018
very pretty
Edward R on May 7, 2018
Bought some 3 years ago and they are doing great
Jorge S on May 7, 2018
I love roses
Rosalinda G on May 6, 2018
They will look beautiful in the front of my 🏡
Teresa J on May 6, 2018
Love the knockout roses
Debbie H on May 4, 2018
I think they are beautiful plants. I see them in other yards and marvel at them. Also, very hard to find these plants in local gardening stores.
MICAH G on May 4, 2018
Color and size
Pamela Z on May 1, 2018
The color and it grows in the shade also, flowering shrubs are hard to find for shaded areas!
Karren B on Apr 29, 2018
I already have 5 of these rose bushes and needed 2 more to fill the space
Jill M on Apr 29, 2018
I saw them in a flowerbed at a ladies house in midlothian texas. I asked her what they were and she said knockout roses.
johnny m on Apr 29, 2018
I have had this type before and they are easy to take care of and are beautiful.
Janet L on Apr 26, 2018
I will plant these with Sunny Knock Out Rose to border our front pathway.
Jill M on Apr 24, 2018
I love roses!
Ellie G on Apr 24, 2018
I needed a plant that would tolerate light shade, and this looked like the right choice for color.
Barbara H on Apr 24, 2018
Love the color and the size of the blooms I hope that it will complement my other rose bushes.
Cindy S on Apr 23, 2018
I am hoping to add some more color to my back yard.
Raul C on Apr 22, 2018
To add color to a flower bed.
Debbie C on Sep 29, 2018
Everything surrounding this hill will be green in color which would make it very boring
george s on Sep 17, 2018
I have some knockout roses. Should they be pruned back in the Fall or should I wait until spring?
Sandy G on Oct 28, 2014
BEST ANSWER: Avoid pruning the Knockout roses at all in the first 2 to 3 years. Sterilize your sharp pruning shears with hot water or alcohol. This guarantees a cleaner, healthier cut. Always prune at an angle and not straight across. Activate the Knockout roses into growth and blooming by pruning it back a little in the spring after the last hard freeze. Keep the Knockout roses under control or if you want it smaller than it’s 3-feet wide by 4-inches tall size by pruning it back in the late summer or early fall. Remove dead or old canes at any time. Also cut very thin canes that might be coming up from the ground. Prune your mature plants by using the 1/3 rule each year in the spring. Remove 1/3 of the oldest canes and any stems that are damaged, diseased or dead.
how many double knockout roses do i need to plant to make a 12 foot long hedge?
gatornon on Feb 5, 2015
BEST ANSWER: If you want a solid hedge, you can plant them 3 feet apart, so that would take 4 plants. If you like to see the rounded top shape of each individual bush, plant them 4 feet apart, which would take 3 bushes. If you want a really dense, tight hedge, plant them 2 1/2 feet apart, which would require 5 plants.
I planted the Double Knock Out Rose 1 week ago and have noticed the leaves are turning brown and are shriveling up. Also the middle of the roses are turning brown. Is this to be expected? This is the first time I have planted a rose bush in my yard.
Joan R on Jun 6, 2014
BEST ANSWER: The knockout rose can stress a little after replanting, they should bounce back within a couple weeks. Make sure that you water well.
Will double knock out roses do well in partial sun?
A shopper on Jul 6, 2014
BEST ANSWER: Yes. They can tolerate shade, but they prefer at least 6 hours of direct sunlight a day. They also prefer afternoon shade to morning shade.
What is the recommended bug repellent?
S H on Mar 18, 2017
BEST ANSWER: I like to use sevin dust on my knockout roses.
How to on plant & fertilize ?...
Eleanor M on Jun 4, 2016
BEST ANSWER: Planting instructions: You should start by digging a hole twice as wide and twice as deep as the root ball. Mix the manure or compost with the soil you have removed. Back fill 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 Knockout roses plants three feet apart.

Watering: Keep Knockout roses moist at all times. Water around the roots rather than overhead.

Fertilization: Fertilize with an organic rose fertilizer once a month. Use organic fertilizer rather than synthetic fertilizers. Synthetic fertilizers can promote weak growth, and your rose will have more foliage and less flowers.

Pests and Disease: Knockout roses are resistant to rust, black spot and powdery mildew.

Pruning: Avoid pruning the Knockout roses at all in the first 2 to 3 years. Sterilize your sharp pruning shears with hot water or alcohol. This guarantees a cleaner, healthier cut. Always prune at an angle and not straight across. Activate the Knockout roses into growth and blooming by pruning it back a little in the spring after the last hard freeze. Keep the Knockout roses under control or if you want it smaller than it’s 3-feet wide by 4-inches tall size by pruning it back in the late summer or early fall. Remove dead or old canes at any time. Also cut very thin canes that might be coming up from the ground. Prune your mature plants by using the 1/3 rule each year in the spring. Remove 1/3 of the oldest canes and any stems that are damaged, diseased or dead.
When should knock-out roses be planted? I live in zone 8.
Brittiny on Aug 27, 2018
BEST ANSWER: I live in zone 6 and we plant anytime at all before the ground hardens in late fall
When should I cut my knock roses back?
CAROLYN H on Jul 27, 2017
BEST ANSWER: Avoid pruning the Knockout roses at all in the first 2 to 3 years. 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. Activate the Knockout roses into growth and blooming by pruning it back a little in the spring after the last hard freeze. Keep the Knockout roses under control or if you want it smaller than it’s 3-feet wide by 4-inches tall size by pruning it back in the late summer or early fall. Remove dead or old canes at any time. Also cut very thin canes that might be coming up from the ground. Prune your mature plants by using the 1/3 rule each year in the spring. Remove 1/3 of the oldest canes and any stems that are damaged, diseased or dead.
Hi. When's best to plant these? And what's the difference between the 1 year and 2 Year plants?
Penny E on Jan 2, 2017
BEST ANSWER: Planting in fall/winter/early spring, while they are in their dormant stage helps them get their roots, established without having to give nutrients to the rest of the tree. Also, with extra care you can plant in the summer, by planting in the evening after the sun goes down, so it will not get leaf burn. Giving it extra water and putting a 3-4 inch of mulch (keeping a few inches away from the trunk) to help retain moisture during hot dry weather.
The difference in the 1 year and the 2 year plant is the age, the 2 year is a little bigger and more mature.
is the double knockout a perennial?
S B on Aug 2, 2018
BEST ANSWER: Yes indeed, and it has come back stronger and more beautiful every year
Is the double knock out good to plant in August?
S B on Aug 4, 2018
BEST ANSWER: I planted mine in August as we had family arriving and I wanted the yard to at least be planted. we had some hot days, I just made sure they had plenty of water in Zone 9-10.
What is the best time of year to plant knock out roses?
Pat S on Aug 26, 2018
BEST ANSWER: I planted mine in early fall and after 2 yrs they are all in great shape
Do they have thorns?
Linda C on May 13, 2018
BEST ANSWER: Yes they do. They are very hardy. In South Florida they never look like the picture but they do very well. We fertilize them as well
How does two year plant differ from one year plant?
Harry H on May 8, 2018
BEST ANSWER: The 1 year plant will be in a 1 gallon container. The 2 year plant is older more mature and in a 2 gallon container.
Are the knock out roses live only for a year?
Cathy on Jul 27, 2017
BEST ANSWER: No will come back yearly as long as you plant in their zone (the green part of the U.S. map that fast growing trees provides on every plant they sell).
How do do rosesdo in Bradenton, Florida?
Karen M on Jul 8, 2018
BEST ANSWER: The growing zones are 5 to 10 for the Double Knock Out Rose. They are cold hardy to -10 degrees F. Click the link to look up what growing zone you are in.
http://www.fast-growing-trees.com/USDA-Plant-Hardiness-Zone-Map.htm
How many different colors are there for these knockout roses?
Dick S on Jun 8, 2018
BEST ANSWER: We have the Double Pink Knockout Rose, Sunny Knockout Rose and a White Out Rose.
Will they grow in partial shade?
Big John on May 12, 2018
BEST ANSWER: The knockout roses will grow in partial shade but will not bloom as profusely. They need at least 6 hrs of sun.
Do the knockout climbing roses keep their green leafs during the winter?
Donna G on Feb 18, 2018
BEST ANSWER: No
Is this a true red color or just another dark pink that I can find anywhere?
Linda C on Oct 31, 2017
BEST ANSWER: The color is Red. We have a Double Pink Knockout and you can definitely tell the difference between the Red and Pink.
They keep blooming every year?
Aranda S on Aug 20, 2017
BEST ANSWER: The Double Knock Out Roses are perennials they will come back next year.
Can the knockout rose be pruned to stay small ?
TheKing I on Oct 11, 2016
BEST ANSWER: Yes you can prune them to your desired height, avoid pruning the Knockout roses at all in the first 2 to 3 years. Sterilize your sharp pruning shears with hot water or alcohol. This guarantees a cleaner, healthier cut. Always prune at an angle and not straight across. Activate the Knockout roses into growth and blooming by pruning it back a little in the spring after the last hard freeze. Keep the Knockout roses under control or if you want it smaller than it’s 3-feet wide by 4-inches tall size by pruning it back in the late summer or early fall. Remove dead or old canes at any time. Also cut very thin canes that might be coming up from the ground. Prune your mature plants by using the 1/3 rule each year in the spring. Remove 1/3 of the oldest canes and any stems that are damaged, diseased or dead.
my knock roses have bugs. how often should i dust them?
ecane on Aug 9, 2015
BEST ANSWER: It depends on what kind of insects you have. Remember when you dust or spray you also kill off any beneficial insects that eat the bad ones.If you need to, I would recommend spraying at dusk.This will reduce the chance of killing bees which are so important for pollination.Some studies have shown that dusting can attract pollinators because they think it's pollen which may be one of the reasons we've had such a decline in honey bees. If I can be of further help please contact me and I will be happy to help. Thank you
We have problems with deer eating roses - are these one of the deer's favorite? Are there any r owes that are NOT deer friendly?
Marjorie S on May 6, 2015
BEST ANSWER: Roses tend to be deer resistant due to the thorns, however, if deer are hungry enough they will go for anything.
can I plant this roses in pots? and if so how big should I get the pot?
camila on Sep 2, 2018

Shipping Details



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.


Shipping Cost


Amount of Order

Standard

Less than $15

$11.95

$15.00-$23.99

$13.95

$24.00-$39.99

$16.95

$40.00 - $78.99

$24.99

$79.00+

Free Shipping with code OCT79!