Rose 'Knock Out'

Rosa

How to grow Rose 'Knock Out'

  • Full Sun

  • Medium

Can be used for landscaping – this variety is very hardy and disease tolerant.

Can be grown in the ground or as a container plant.

Fertilize in spring and summer, and prune while dormant. For best blooming, Knock Out needs at least 4-6 hours of direct sun.

Plant in a location that enjoys full sun and remember to water moderately. Keep in mind when planting that Knock Out is thought of as hardy, so this plant will survive close to or on freezing temperatures. Ensure your soil is loamy and has a ph of between 6.6 and 7.5 as Rose is a weakly acidic soil to weakly alkaline soil loving plant.

Growing Knock Out from seed

As a hybrid variety, this plant will not reliably grow true to type from seed.

Transplanting Knock Out

Ensure that temperatures are mild and all chance of frost has passed before planting out, as Knock Out is a hardy plant.

Harvesting Knock Out

Knock Out Patent Information

Australia – Application No: 2003/061 in 2003 1

United States – Patent No: PP 11836

Rose Knock Out Etymology

Registration name: RADrazz
Bred by William J. Radler (United States, before 1995).
Introduced in United States by Conard-Pyle (Star Roses) in 2000.
Introduced in France by Selection Meilland in 2001 as ‘Knock Out’. 1

Other Names for Rose 'Knock Out'

Knock Out ™, Knockout ™, Purple Meidiland

Footnotes