Tree peony: Suffruticosa. Parentage: P. rockii, open pollinated. . First bloomed 2001. Semi-double flowers, light purple (RHS 75A) ruffled petals with dark maroon-purple (RHS 187A) flares. Carpels 3-4, hairy, grey-green with near white (RHS 157D) stigmas. Well developed disc. Pollen and seeds. Upright growth to 5-6 feet (1.5-1.8m). Named for Italian born, internationally acclaimed landscape designer, Lady Arabella Lennox-Boyd. Photo on file.