PearlescentPearlescent (RADfragwhite) A continuous bloomer with a powerful citrus fragrance, Pearlescent is one of the most strongly scented white roses in this year's new releases. Bred by William Radler (the creator of the Knock Out rose series), this shrub rose produces fully double flowers that are pure white in summer, taking on a light pink blush as the weather cools in autumn. It's that seasonal shift that gives the rose its name: a soft, luminous quality