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  • Double Knock Out® Rose for Sale

    Double Knock Out® Rose for Sale

 
*images shown are of mature plants

Double Knock Out® Rose

Rosa 'Radtko'

$21.21
$24.95 (15% Off)

1. Size

Size
  • Ships Tomorrow
  • 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.

Course 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
$6.95
-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
$4.95
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 Sun, Partial Sun

Spacing:

4 ft.

Growth Rate:

Moderate

Drought Tolerance:

Great

Botanical Name:

Rosa 'Radtko'

Does Not Ship To:

AZ

Double the Petals- Double the Roses!

- One of the longest blooming periods available...
starts late May or early June and lasts until the heaviest
fall frost.
- Even more disease and insect resistant...
(black spot, rust, mildew etc.).
- Virtually maintenance free...
grows thick without pruning back flowers.
- Improved cold hardiness...
thrives in Growing Zones 5-10.

The Double Knock Out® Rose gives you all the amazing characteristics of the original Knock Out® Rose, but with more petals & better disease resistance.

The original Knock Out® Rose quickly became one of the most popular rose bushes in recent history. Finally, a trouble-free rose with brighter, longer lasting blooms.

Amazingly, horticulturists have improved this incredible variety to create the Double Knock Out® Rose.

The Double Knock Out® gives you all the characteristics of the original Knock Out® plus:

When 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.

Thrives in containers or in the ground. This improved variety will even grow in shade... giving you more areas to plant.

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.

We prune your Knock Out® Roses before we ship them out 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.





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Customer Reviews

4.5 / 5.0
155 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
103
30
14
4
4
I bought these b/c of the assurance that not much work was required. THESE ROSES HOLD TRUE TO THEIR DESCRIPTION. I ordered 2 3-gallon bushes & a rose tree. I have since ordered 5 more 3-gallon roses & another rose tree. I had roses INSTANTLY after planting & Im no gardener by far. These roses are so trouble-free & I am so pleased! My roses are the talk of my housing community!
January 1, 2013
Double Kbnockouts
What a delight to purchase 20 of these for a garden wall and see them absolutely explode with new growth and height. Actually, I can not believe that we have to deadhead ( remove dead blossom) every third day at this time. I used some iron and a bit of Epsom to get them going and they have survived the cold, freezing and hot 103-plus weather and been a delight to see in the yard. Not as tall yet but they are flowering as the picture here shows. Thank you FGT!
July 15, 2014
Purchased
over 4 years ago
I had 15 1 gal DK Roses planted 3 years ago. 1st of all I want to say dealing with Fast Growing Trees was a wonderful experience (long story). My puppy got hold of 2 of them before we could get them in the ground and I thought he had killed them. He did stunt their growth because the other 13 are doing fabulous. My husband hates mowing around anything, I put these were he wouldn't have to, and other than the 1st day we planted them I have never even watered them. That says a lot because it gets extremely hot here in S. IN. My husband is so impressed that he wants me to plant more in a another area that he doesn't want to have to weed wack. Unfortunately I'm going to have to wait until next spring to do it, but if he is actually willing to do the planting that SCREAMS beauty and success. I can't wait! I'll keep you posted!!
January 1, 2013
Purchased
over 7 years ago
Great! Blooms forever! Deer Wont Eat Them!
January 1, 2013
The Double3 Knockout Rose is a great addition to my roses. It has produced a huge number of very bright red roses consistently.
January 1, 2013
I've been so excited for these to come in, waited 2 months. I still planted them and I hope they grow beautifully as everyone says but know one thing: these roses are NOT red! They're fushia/hot pink. The pictures all look red and the description says dark to light ""red."" They're pink if I ever saw pink. I'm disappointed because I specifically looked for red and could have gotten them elsewhere had I known
January 1, 2013
Purchased
over 5 years ago
Theyre awesome! I planted 8 of the 1 gallon knockout bushes in a 24 foot section of my backyard fence line. I now have superb color in a place that was one quite boring. They grow fast!! I have had many compliments. The color is fantastic.
January 1, 2013
We got the roses on a timely basis. They were already blooming. They are growing good and look great. Good Service. Hubert
January 1, 2013
Purchased
over 6 years ago
I purchased and planted these roses in September last year. They not only made it through one of the harshest NM winters we have had in a long time, they out bloomed our other pink knoockout roses that were a year older and more established
January 1, 2013
So far, so good.
Planted them about 3 feet apart, down a 30 inch wide planter, between my driveway and the walkway from the street to my front porch. I put in a drip line down the whole length of the planter, with drip feeds to each plant. It waters once a week. However, my lawn sprinklers tend to wet the planter soil. I treated the soil with compost and sand (bentonite) before planting.
October 11, 2014
Purchased
over 3 years ago
Growing Zone:
5

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 16 questions Browse 16 questions and 72 answers
Why did you choose this?
Fast-Growing-Trees.com Store
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
GREAT ROSE
MIKE J on Apr 20, 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
GREAT ROSE
MIKE J on Apr 20, 2018
The size was perfect to place one on each side of my main door entrance.
A Louis R on Apr 16, 2018
your presentation of the rose bush was appealing
glen c on Apr 16, 2018
They will maintain color to my lawn from summer until spring
Robert S on Apr 15, 2018
A natural beauty
Celeste F on Apr 12, 2018
What my wife has been looking for , they look great, I'm also looking for the goodblood Japanese REd Maple trees 2- 4 ft tall
Robert M on Apr 11, 2018
Beautiful color
Hang T on Mar 31, 2018
Looking for a beautiful flowering tree by patio.
Frances H on Mar 31, 2018
i like the way it looks.
Jeff M on Mar 30, 2018
Perfect shrub that will thrive in the zone in which my mom lives in!
Andrea S on Mar 29, 2018
The huge amounts of blooms and length of blooms.
WILMA G on Mar 29, 2018
just dug out old Ixora plants and needed something on the back side of the house. This would be a beautiful addition to that spot
Karen B on Mar 29, 2018
nice for the yard
Jean B on Mar 25, 2018
Pretty and problem-free
Anne M on Mar 24, 2018
It is easier to care for than standard roses.. In comparison to standard roses this is a more healthier and better looking plant.
Francesco C on Mar 22, 2018
I understand they are easy to care for. (I'm a newbie gardener). Also, the long bloom season.
Mandy L on Mar 17, 2018
add more color to my backyard
Suresh B on Mar 12, 2018
low maintenance
Priscilla X on Mar 10, 2018
love the continuous bloom all summer long with multi-petal flower heads.
Timothy W on Mar 8, 2018
I like the idea of beautiful low maintenance flowers.
Grace S on Mar 6, 2018
I’m actually hoping for a few thorns with this rose, but I love the fact that I can start it in a pot and then move it to the garden permanently in the future!
Connie H on Feb 24, 2018
Love all the blooms.
Cathleen S on Feb 24, 2018
This free blooming rose will make a wonderful addition to our driveway entrance.
Ron K on Feb 24, 2018
Delicate and beautiful, I chose this plant because it will line a small walk way to my beautiful patio I am building.
Verlene B on Feb 19, 2018
I pick this Double knock out Rose because I always wanted a climbing rose bush for my trellis and I liked the good reviews that I read.
Cynthia P on Feb 18, 2018
Looked easy
Kathryn O on Feb 17, 2018
add color
Marc E on Feb 15, 2018
Have had regular knock out roses and wanted to try these since it said they had more flowers. Loved my other ones.
Barbara C on Feb 12, 2018
My fiance said they are her favorite color and don't have thorns. Plus V-day coming up. Can't get caught without flowers don't ya know? :)
Christopher B on Feb 7, 2018
I need a hardy and color full plant for the south side of my home. This is the one i wanted..==this is the knock rose fits the bill. As for the patio peach tree . I have very small yard . So this works well for me. Thank you for interest in my plant life.
Ed F on Feb 2, 2018
Picture is worth a thousand words...BEAUTIFUL!
M A on Jan 28, 2018
Beauty and hearty growth
Lois M on Jan 15, 2018
I've always had great luck with these flowers!
Gigi M on Jan 1, 2018
I hope they grow here in New Mexico.
Dennis S on Dec 26, 2017
They have a long blooming period. And will add a nice splash of color to my back porch.
Janice L on Nov 19, 2017
We planted a double knockout roses next to the windows overlooking the yard when we sit down for breakfast to have coffee lunch or dinner the roses are Growing so well that you can see them from the Dinette table which sits next to Window though window they are great and beautiful To look at in the morning or in the afternoon I recommend them to everybody
Ricardo R on Nov 10, 2017
Beautiful and abundant roses
Mary T on Nov 9, 2017
The beautiful color and it's hardiness.
Victoria H on Oct 29, 2017
To bring color to my side yard. I'm replacing two very old shrubs (not colorful at all) with these five rose bushes.
Bob B on Oct 28, 2017
Long lasting blooms
tommie d on Oct 26, 2017
It was on sale but mostly to cover front underneath of my deck. Also ordered trees earlier and had good quality.
Patti M on Oct 22, 2017
I owned Double Knock Out Roses at my prior home and am excited to plant them again. They are almost "care free", look wonderful and bloom all summer!
Nanette B on Oct 18, 2017
The vibrant color and I love roses...
Jennifer S on Oct 15, 2017
I love roses and I think is color will be beautiful
Bertha D on Oct 8, 2017
these are part of my border barrier
phillip h on Oct 6, 2017
Love flowering plants and trees....
Carey B on Sep 24, 2017
I should have got free shipping?
milanpaulic m on Aug 16, 2017
Great price
Anton K on Aug 11, 2017
I am hoping to add some more color to my back yard.
Raul C on Apr 22, 2018
The size was perfect to place one on each side of my main door entrance.
A Louis R on Apr 16, 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: I ordered 16 double knock out bushes over a year ago and now have a beautiful hedge in my front yard. I cut about 3 dozen roses each week and the blooms last! I did have some leaf spot early on and sprayed them with a mix of milk and water which seemed to do the trick. They are so beautiful that one night someone took 2 bushes right out of the ground! I tried replacing with double knock outs from Kmart and noticed that those bushes are not thriving like the others. I will replace then from Fast Growing Trees. Enjoy!!
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.
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.
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.
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).
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.
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.

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 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 or 4. If you are unsure of your growing zone, visit our Growing Zone Finder.

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


Zone Map

Zone

Shipping Resumes

Zones 3 & 4

Week of Apr 30th

Zones 5-11

Ships Now!

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Less than $15

$11.95

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