
Knock Out Rose Garden Design. Mature Knock Out roses will benefit from a general purpose or rose fertilizer applied regularly during the growing season. Knock Out® roses are the most popular roses sold in the United States.
Learn how to care for them so they reach their full potential.
Knock Out roses were created by William Radler, a Wisconsin rose breeder and director of the Boerner Botanical Gardens.
In average garden soil you should not have to water your newly planted Knock Out Roses every day. Research and development continues each year to find new members of The Knock Out® Family of Roses. The plants clean themselves, dropping their spent petals to promote garden neatness, and they are perfect for grouping in the landscape, getting them established in any sunny area then letting them alone to do.
