Clematis 39dorothy walton39 is a vigorous variety putting on a display of large and beautiful star45shaped flowers from july to september each delicate pale mauve bloom has a distinctive darker purple bar along the length of each sepal a particularly pretty late45flowered variety 39dorothy walton39 40previously known as 39bagatelle3941 deserves a prominent spot in the garden it39s an ideal choice for covering walls and fences or for training onto arbours