Tempted by the ease with which the Knockout rose "radrazz" grows, how could I resist the yellow variety Rosa "radsunny". Following our Saturday walk around Lady Bird Lake we headed over to our favorite post walk lunch spot, Whole Foods. There among all the new plants I saw the yellow variety I had been reading about. Hardy from zone 5-9, "radsunny" has the same dark leaves but a slightly more upright habit and it is has all the disease resistant attributes of the other knockout roses. In a flash it was in the cart. On the way home I kept smelling a wonderful fragrance; could it be the new rose? It was. I have my yellow rose of Texas.