Knock Out Roses

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This article is an overview of all the Knock Out Rose varieties.
by Brent Wilson · All Zones · Roses · 0 Comments · May 16, 2011 · 6,437 views

Rose Breeder, Bill Radler, has revolutionized the way we think of roses. With the creation of The Knock Out Rose, many say that he single-handedly brought rose genetics from the 20th Century into the 21st Century.

The Knock Out Rose, Radler's first commercial success and a 2000 AARS winner, has broken all records for sales of a new rose. Today The Knock Out Rose is the most widely sold rose in North America.

The Knock Out Family of Roses are easy to grow and do not require special care. They are the most disease resistant rose on the market. They have stunning flower power with a generous bloom cycle (about every 5-6 weeks) that starts in Spring and will continue until the first hard frost. All of the Knock Out Roses are self-cleaning so there is no need to deadhead unless you just want to. Many gardeners find pruning therapeutic.

The Knock Out Family of 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. In the coldest regions, they will need winter protection.

If unpruned, The Knock Out Roses grow on average to about 3-4' wide x 3-4' tall. Periodic trims will keep them maintained at a smaller size. A once a year cut (to about 12-18" above the ground) in early spring (after the last hard frost) is also recommended for maximum performance.

Knock OutRoses can fit into any landscape. Plant them individually among shrubs, annuals and perennials in mixed beds and borders. Plant them in large groups to create a colorful mass or in straight or curved rows to form a low-maintenance hedge. Typically, most higher maintenance, disease-prone roses aren't suitable for planting in front of the home, but Knock Out Roses hold up so well there isn't a problem with using them as colorful accents in foundation plantings.

Research and development continues each year to find new members of The Knock Out Family of Roses. To assure that these new introductions meet the standards set by the original Knock Out rose, all test varieties are evaluated for several years in a wide variety of climates and growing conditions at locations around the country. Only a fraction of the test varieties will meet the Knock Out standards and will be introduced.


Below is a listing of Knock Out Roses starting with the newest releases.


The Sunny Knock Out Rose - Rosa 'Radsunny' is the newest release from Rose Breeder, Bill Radler is the first and only fragrant member in The Knock Out Family of Roses. It has a slightly more compact and upright habit than The Knock Out Rose with bright yellow flowers that fade quickly to a pastel cream color. The yellow color stays more intense during cooler times of the year. The dark, semi-glossy foliage contrasts nicely with the yellow flowers.

The Double Pink Knock Out Rose - Rosa 'Radtikopink' is a bright bubble gum pink version of The Double Knock Out Rose that is very stable and also unfazed by the heat. Classic shaped flowers from early Spring to the first frost. With superior drought tolerance once established, it has the toughness and resistance for which the family is known. A vibrant color that perks up any landscape.

The Double Red Knock Out Rose - Rosa 'Radtko' is from the same cross that produced the original Knock Out, The Double Knock Out Rose represents the next generation in the family of The Knock Out Roses. The full double flowers look just like a classic rose. What it gained in beauty it did not lose in performance. It is as resistant to black spot as the famous original, has the same bloom cycle and is slightly more winter hardy. A shrub rose with a classic look and the toughness that you expect from a member of The Knock Out Family. My personal favorite.

The Rainbow Knock Out Rose - Rosa Radcor is uniquely colored coral pink blooms with yellow centers. The Rainbow Knock Out Rose is more compact than the other members. After opening the blooms begin to fade to pink, then light pink and finely to white. Rarely affected by black spot. New foliage appears deep burgundy, aging to dark green.

The Blushing Knock Out Rose - Rosa 'Radyod has similar flowers to The Knock Out Rose, this variety has light pink blooms that, with age, fade to a delicate subtle pink. A vigorous grower with the same disease-resistance and hardiness of the Knock Out Rose. This shrub rose will be a versatile addition to any landscape.

The Pink Knock Out Rose - Rosa 'Radcon has single petals just like the original Knock Out but in a beautiful shade of bright pink. And like the other members of the family, The Pink Knock Out Rose is black spot resistant, drought tolerant and self-cleaning. A perfect companion to other shrubs, roses and perennials.

The Knock Out Rose (Original) - Rosa 'Radrazz' is the original member of The Knock Out Family. This shrub rose set a new standard in disease resistance with little to no maintenance required. The bloom cycle produces rich cherry red blooms that will continue until the first hard frost. Black spot resistant, drought tolerant and self-cleaning, this rose suits every garden and every lifestyle.


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