The original and Rainbow variety of Knockout Roses were named as “All-America Rose Selections” in 2000 and 2007.
Knockout Roses are just like any other rose. One of those ways is that they do best with no less than six to eight hours of sunlight every day.
These rose bushes get pretty large, ranging from three to five feet tall and wide. Some sources claim they can reach as high as eight feet if not pruned.
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