What makes Knock Out roses so special? Gardening expert weighs in

Roses go through two years of testing by the American Society of Roses. Knock Outs tested so well that they thought they were flawed.
KTBS

Knockout and Drift roses: The low maintenance roses that have become landscape favorites

SHREVEPORT, La. - Both Knockout and Drift roses have become favorites in both residential and commercials landscapes due to their low maintenance and impressive blooming cycles. "The Knockout and ...
San Gabriel Valley Tribune

Gardening: KnockOut roses proving they can live up to their name

The most popular rose in America, known as KnockOut, was created by William Radler in his basement, just outside Milwaukee. For 15 years, Radler labored alone, patiently nurturing thousands of ...
The Houma Courier

Knock Out roses can be pruned, too

The Knock Out rose has become amazingly popular over the past 10 years. This rose has singlehandedly changed the market for roses since its introduction and ushered in a whole new way to look at roses ...
Lawrence Journal-World

Garden Variety: Knock Out roses are here to stay

Some gardeners say that the wildly popular Knock Out rose variety is over-planted. If you look around town at what is blooming now, you might find a Knock Out rose on what seems like every corner (and ...