Star Roses will release Sunny Knock Out 'Radsunny' in This new release from Bill Radler has the disease resistance of the original Knock Out, with a similarly dark, attractive foliage, and a slightly more upright habit. A new color in the most popular shrub rose family in North America, Sunny Knock Out will shine in any garden from Canada to the Gulf. Winter hardy to zone 4. The yellow color will stay stronger during the cooler times of the year. Visit us to see them blooming. Sign up for our email newsletter and we will let know when Sunny Knock Out is available - click here to subscribe.
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