Double Knock Out® Shrub Rose



Compact, dense, and tolerant of a bit of shade

Several years ago, Knock Out® wowed gardeners everywhere with its superb performance as a landscape rose. Double Knock Out® Shrub Rose is not only a tireless bloomer, all summer and into fall, but also terrifically resistant to blackspot and other diseases, keeping Double Knock Out® Shrub Rose healthy foliage in any climate. The same breeder has developed Double Knock Out® Shrub Rose, with the same disease resistance, floriferousness, and fine landscape value—plus even greater shade tolerance and DOUBLE-flowered blooms.

These blooms of shiny cherry red are about 2½ inches wide and utterly unstoppable from early summer till frost. Most are fully double, some semi-double, with an average petal count of 18 to 24. These blooms are all high centered in the classic rose form. No need to deadhead this lively shrub— the flowers just keep coming no matter what.

A bit tighter, denser, and more compact than its famous sister, Double Knock Out® Shrub Rose makes a fine low hedge in any sunny to partly shaded garden. Double Knock Out® Shrub Rose also works well when planted as a long ribbon of color through a border.

A great deal of Double Knock Out® Shrub Rose value as a landscape rose comes from its 3-season appeal and its resistance to blackspot. Not only is the bloom season exceptionally long, but the foliage takes on rich burgundy hues when it emerges in spring, adding another season of color to this shrub's merits.

Crown-hardy to -20 degrees Fahrenheit, this 3- to 4-foot high and wide perennial withstands drought, heat, humidity and, in addition to blackspot, pests such as the Japanese beetle, leafhopper, and rose midge. Double Knock Out® Shrub Rose is a landscape treasure you must not miss.


Skip Product Specs
Genus Rosa
Variety 'RADtko'
ppaf PP16,202
Zone 5 - 11
Bloom Start to End Late Spring - Late Fall
Habit Compact
Height 3 ft - 4 ft
Width 3 ft - 4 ft
Bloom Size 2 in - 3 in
Petal Count 24
Additional Characteristics Bloom First Year, Flower, Free Bloomer, Long Bloomers, Repeat Bloomer
Bloom Color Red
Bud Shape Classic, Pointed
Flower Shape Double, Rounded
Foliage Color Burgundy, Medium Green
Fragrance No Fragrance
Light Requirements Full Sun
Moisture Requirements Moist,  well-drained
Resistance Cold Hardy, Disease Resistant, Drought Tolerant, Heat Tolerant, Humidity Tolerant
Soil Tolerance Normal,  loamy
Uses Beds, Border, Hedge, Landscapes
Restrictions *Due to state restrictions we cannot ship to the following:
Canada, Guam, Hawaii, Puerto Rico, Virgin Islands

Product Review Summary

Based on 2 reviews
The average rating for this product is 5 out of 5 stars
Overall Rating: 5.0/5.0

Customer Reviews

October 23, 2019

Arrived Beautiful

This shopper rated the product 5 out of 5 stars

First - packaging was unbelievable. I ordered 7 rose bushes and every one was packaged perfectly. With this stuff they put on top the dirt stays in. I've replanted in the ground and they are healthy good looking plants. One already decided to bloom again. We live in Nixa, MO. I would recommend ordering rose bushes from Jackson Perkins only. I ordered unusual ones and can't wait until spring.

Catalog Pro Shopper from MO
October 09, 2019

Beautiful and hardy

This shopper rated the product 5 out of 5 stars

This rose arrived looking slightly puny and I thought it wouldn’t survive. But I was really surprised when it took off and began growing and blooming rapidly; and within only a few days. We live in southern Idaho where the winters can get quite cold. So far the plant is in very good condition, which tells me that it will be in bloom in Spring as well as my older well established roses..I think these are the best roses for brightening up any area in your yard.

Kathryn from ID

Choosing Your Roses

Bare root roses are the most common form of roses for spring and early season planting, and come in two types: grafted and own root.

Grafted Bare root Roses
Own root Bare root Roses

Grafted roses, sometimes referred to as budded bare root roses, have roots that belong to a different variety of rose than the shoots. While the shoots will grow into the variety of rose you've selected, the root variety has been specially grown and developed for hardiness, improved resistance to common diseases, and improved resistance to certain weather conditions. The roots on any grafted rose you receive are usually already two years old, so they'll establish in your garden more quickly when planted.

Own root roses are grown from rose shoot cuttings and develop their own root system. Unlike grafted roses, both their roots and shoots come from the same variety of plant.

All Jackson & Perkins bare root roses are maintained in a suspended state of growth in our state-of-the-art wet cooler, so they'll be delivered to you with no foliage or blooms. The wet cooler has a uniform storage temperature set just above freezing and uses a fog system to provide consistent humidity of 100%, ensuring the roses remain fully hydrated and don't exit dormancy before leaving our facility. While you might see some variance in size, even within the same variety of bare root rose, all our roses meet the same rigorous standards of quality.

So, not sure which type of bare root rose you should choose? Don't worry, we've got that covered. We've researched which varieties of bare root roses grow better as grafted or own root, and both types can be planted in the early spring months, so just choose the variety of rose you're most interested in and get planting.

Though you might be surprised or intimidated when you receive a box of bare root roses filled with roots and shoots, rest assured, with the proper care, these little bundles will grow into stunning roses.

Container Roses

Container Roses

Container roses are typically available in 2-quart sizes or larger and come with established foliage that may or may not have blooms. While bare root roses should generally be planted in early spring, container roses allow you quite a bit more flexibility in planting time, from spring all the way through fall in many zones. Fall can be a good season to plant container roses because it allows them enough time to establish themselves before cold or freezing temperatures arrive.

Jackson & Perkins World's Finest Roses

The Jackson & Perkins Difference

Jackson & Perkins is one of the most recognized names in the gardening industry. In fact, for decades rose lovers have considered Jackson & Perkins synonymous with great roses. How has Jackson & Perkins earned this reputation? Simple, for over 100 years we have brought our customers the world's finest selection of roses.

Jackson & Perkins became a leader in the world of roses by producing dozens of award-winning roses. Jackson & Perkins has won more All-America Rose Selection awards than any other US company. In addition to the AARS awards, Jackson & Perkins has won numerous other awards, including the coveted Golden Rose of The Hague and the Royal National Rose Society’s President’s International trophy, among others.

From seed to market a new garden rose can take 8 to 10 years to develop. Every year, thousands of seedlings are grown but only a handful are selected to move into the trial phase. During this time, potential new roses are grown and evaluated in different climatic regions of the country. Our rosarians are looking for rose bushes that have stronger disease resistance, vigorous growth habits, and clean healthy foliage. When it comes to blooms, they are looking for improved flower form, unique colors, and strong fragrance.

Today Jackson & Perkins offers over 200 varieties of roses that includes a broad selection of exclusive roses, historical favorites, and innovative genetics from hybridizers around the world. We have two seasons each year for roses. In the spring, we offer bare root rose bushes, bare root 36” trees, 24” patio trees, and container grown roses. Our fall season is all bush roses, and they are available in 2QT and 1GL containers.

Whether you are new to roses or are an experienced rosarian, our online store has rose varieties for you. Our website is packed with information. You will find each rose fully described and lots of articles and videos that will help answer all your questions. Our call center staff have decades of experience and are just a phone call away.

Jackson & Perkins is here to help you in every way on your rose-growing journey.  There is no other plant in the garden that comes in more colors, fragrances, shapes, or forms, or performs as many functions than roses do.

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