- Blushing Knockout™
Over the past 10 years, the world of roses has witnessed a revolution with the popularity of the Knockout™ series of roses in gardens across the U.S.
Over the past 5 years the University of Tennessee has been testing shrub roses in Poplarville, MS and two Tennessee locations. Dr. Mark Windham and his research team have been evaluating disease resistance in shrub roses. “The summer heat and humidity in the South makes it a perfect location for evaluating rose disease resistance”, says Dr. Windham.
The winners in the 2010 UT Shrub Trial are:
Category 1. Resistant Cultivars (<2% foliage with blackspot and/or Cercospora leaf spot):
‘Blushing Knockout’
‘Brite Eyes’
‘Double Knockout’
‘Double Pink Knockout’
‘Golden Eyes’
‘Hansa’
‘Kashmir’
‘Knockout’
‘Moje Hammarberg’
‘My Girl’
‘Pink Knockout’
‘White Dawn’
‘Wildberry Breeze’
Category 2. Moderately Resistant )<10% foliage with blackspot and/or Cercospora leaf spot):
‘Carefree Sunshine’
‘Como Park’
‘Fiesta’
‘Forty Heroes’
‘Homerun’
‘My Hero’
‘Palmengarten Frankfurt’
‘Super Hero’
‘Wild Spice’
‘Wild Thing’
Most, if not all cultivars, may be purchased from mail order nurseries found on the internet. The ‘Knockout’ series and ‘Home Run’ cultivars are available at most garden centers.
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