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Double Knock Out® Rose

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  • 4 or more: $8.99 each
Item #10141. Ships in a 4" Round Stark® Pot.


Twice the beauty! Enjoy scores of lightly fragrant, cherry red flowers that have twice as many petals as the original Knock Out® Rose. Moss green foliage. Hardy and virtually maintenance-free — no deadheading to remove faded flowers. Reaches 3-4' tall and wide. Blooms from late spring until first frost. May be covered by U.S.P.P. #16202 or other patents. This patented variety is sold under license from the patent owner. Radtko cultivar.


Bloom Color Red
Shade/Sun Full Sun
Soil Composition Loamy
Soil Moisture Well Drained
Soil pH Level 5.5 - 7.0
Zone Range 5 - 9

Zone Compatibility

This Variety's Zone Range 5 - 9
My Hardiness Zone ?
The USDA hardiness zones offer a guide to varieties that will grow well in certain climates. Each zone corresponds to the minimum winter temperatures experienced in a given area. Make sure that your hardiness zone lies within the zone compatability range of this variety before ordering.

Size & Spacing

Mature Size

When your plant matures, it will be approximately 3 - 4' tall x 3 - 4' wide.

Recommended Spacing

We recommend spacing these plants 3 - 4' apart to ensure room for growth.

Related Assortments

This item is also available in this money saving assortment.

We bundle many of our popular products in assortments with other items that compliment each other. Plus, when you purchase an assortment, you save money compared to buying each item individually!

Tools & Supplies

Having the proper tools and supplies when growing your own can make the difference between a good harvest and a great harvest! Here's a list that our experts recommend for this variety.

Planting & Care

Learn all about how to grow roses in The Growing Guide. An entire section of our website dedicated to your growing success.

Shipping Information

Estimated Delivery Date

You don't pay until it ships.

We work hard to make sure that your order arrives at the ideal time for planting in your location. That's why we only ship living products during certain times of the year. Order now and your credit card won't be charged until your climate is suitable for planting success and your order is shipped.

Shipping Restrictions

Agricultural regulations prohibit shipment of certain types of trees and plants. We do our best to provide a selection that gives everyone a chance to grow their own. This item cannot be shipped to all of NJ.

Our Promise of Satisfaction

1 Year Warranty

Every order comes with our promise of satisfaction. If you aren't completely satisfied with your order, let us know within one year for a free one-time replacement or refund.


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Questions & Answers

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Browse 7 questions Browse 7 questions and 50 answers
Why did you choose this?
Stark Bro's Store
Because we love roses. These are growing so well and look so pretty.
Tonya J on May 17, 2016
Adding to existing rose bed
LEE S on May 11, 2016
Because we love roses. These are growing so well and look so pretty.
Tonya J on May 17, 2016
I love the fact that they bloom so long
Sharon N on May 12, 2016
Adding to existing rose bed
LEE S on May 11, 2016
I have one Knock Out Rose bush that is just beautiful, at least a hundred blooms on it and has made it thru our winter for 2 years. Time for more.
Patricia M on Apr 30, 2016
I had one before in another house for 35 years. Roses are my favorite.
Henry L on Apr 26, 2016
Will add variety to my pink/red collection
Judith d on Apr 25, 2016
Because they've beautiful.and disease resistance...
Carolyn N on Mar 27, 2016
Love red I am 84 and I love to garden, trying to get as much perennials as possible in this year,
Rosemary W on Mar 22, 2016
We have had knock out roses in the landscape of two of our previous homes and liked the plant very much. We are landscaping our new home now and wanted to include them in our new home.
Paul H on Mar 11, 2016
Love the red, and pink but yellow is still my favorite in other roses, maybe it will be with these.
Agnes D L on Mar 1, 2016
I have purchased 3 of these rose bushes before. They grow well even without full sunlight. Need VERY little care.
Kathy R on Feb 23, 2016
I love the fact that they bloom so long
Sharon N on May 12, 2016
I have one Knock Out Rose bush that is just beautiful, at least a hundred blooms on it and has made it thru our winter for 2 years. Time for more.
Patricia M on Apr 30, 2016
Can you grow knockout roses in containers?
Lynda C on Apr 22, 2016
BEST ANSWER: We grew the knockout roses to resale in gallon to two gallon containers. Some didn't sell the first year,so we partially munched the pot to over winter. They seemed to survive just fine. We are in the southwest corner of Indiana. I do not know how they would do further north. They have survived well in our coldest winters however
How big are these when I receive them ?
Iveng on Feb 20, 2016
BEST ANSWER: 12-18 inches. They grow very quickly and will bloom that year if you plant them in the spring. I strongly recommend!
is may to late to plant knock out roses ?
barbara c on May 12, 2016
BEST ANSWER: It should be fine as long as you give it enough---not too much!---water. Mine are doing great and they got planted in a late summer heat wave last year.
How long does it take for these roses to get to their full size?
Ron H on May 12, 2016

I planted 18 of these roses last spring. All are thriving this spring with lots of buds. At one year in the ground the shortest is 25 inches the tallest 36 inches. None are quite as wide as they are tall. The growth will depend on quality of soil , moisture, and amount of sun. Mine got some bunny munching last spring and I had to use a hardware cloth wrap for protection. So, they lost some growth due to rabbits.
Will it grow in the shade? Garden faces North and receives just a bit of morning sun.
Danielle A on Mar 17, 2016
BEST ANSWER: I have heard that most roses require 6 hours of sunlight so I don't think a northern exposure would be ideal as that may not be enough sun. Hope this helps. Or you could google knockout rose care.
How long do they bloom?
Earl L on May 23, 2016
BEST ANSWER: I'm in Michigan and I would say they will start blooming in June and keep going through October ... Maybe November. It just depends on when we get our first frost. Defiantly will have blooms all summer

Customer Reviews

4.7 / 5.0
21 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Alive and healthy, well packaged
I've purchased bare root roses, including Knockout, online and gallon containers at the big box stores. I was intrigued by the pricing for these live, shipped Knockout roses. It's a great value for live roses. I understood that these were being shipped in 4" containers, but the Q&A for this product indicates in several responses that these plants would be delivered as 12 - 18" specimens. All four of those I ordered are under 5" tall. They are absolutely actively growing and by all appearances, extremely healthy plants though. Just in case anyone else is confused about the size of the product delivered, apparently it varies. Mine are tiny plants which, once planted, will likely not be visible through most of this growing season.
April 29, 2016
4 weeks ago
Not as healthy as previous purchase of Double Knock Out Roses
I ordered 8 roses recently, but they arrived a little unhealthy. The leaves were a little yellowed, and the plants looked somewhat wilted. After planting them they got off to a slow start. They are growing, but one is very iffy, as it still shows signs of stress. The roses I ordered prior to these were healthy and vigorous, so beautiful. Trying to nurse the new ones back to health.
May 5, 2016
2 months ago
Double Knock Out Rose
Got this for my mother and she loves it. Even though her flowerbeds are very shady, it's still doing quite well and blooms a lot.
May 6, 2016
over 2 years ago
This is their second season. Growing amazingly fast this year. No complaints.
May 12, 2016
11 months ago
little(right now) but a promise of greatness
I cannot give a higher star as the plant is still a baby., just got it last year. It was only 6" tall when I got it, but it did have a bloom that first summer. It has doubled in size now and has a bud. I really hope that it will double again. I have the single and it has to be cut way back every Spring as it keeps getting bigger and bigger. If the double does the same that will e great. Well worth the money.
May 24, 2016
1 year ago
beautiful rose bush
pruned per recommendations late last fall. This early summer---May multiple blooms and excellent growth. Very pleased.
May 16, 2016
1 year ago
Double Knock Out Rose
I bought five plants one year ago. They were very small-4-6 inches and I was skeptical. One year later they are 2-3 feet high and loaded with roses and beautiful. Very pleased with these plants.
May 23, 2016
1 year ago
Doing great the second go around.
I ordered 10 of these and planted them in the fall of 2014. Come spring I lost 6 plants and had to order more. I guess they weren't established well enough. Last year I fertilized and set up a irrigation system. So far they are about 3-ft high and starting to spread out after a early spring pruning. They have buds on them now so I'm looking forward to seeing this years blooms and growth. I planted these as a hedge with 3ft spacing
May 17, 2016
1 year ago
Easy Beautiful Roses
Double knock out red roses have been growing in my NC south facing yard for a year. They were about 3 feet tall at the end of last summer and after a winter trimming are now in mid-May back to 3 1/2 feet tall, with more growth to come through the summer. Continuous bloom. Deadheading is not necessary, but helps with appearance on occasion. Spraying not needed at all, as no disease attacks these plants. They love the heat and humidity and now that they are established, need minimal watering only during periods of drought. Neighbors appreciate their beauty!
May 21, 2016
1 year ago
Ravishing Roses
Fast growing, lasting blooms, easy to grow. I grow mine in pots.
May 12, 2016
over 2 years ago
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