Comtesse de Bouchaud clematis (Clematis 'Comtesse de Bouchaud') was given an Award of Garden Merit by the Royal Horticultural Society in 1993. A strong, vigorously growing, late-flowered vine, this clematis bears single six-petaled, bright mauve-pink flowers 3 to 4 inches across with creamy yellow anthers in summer, with an initial flush in June and continuing sporadically until September. It will will grow 9 to 12 feet tall, climbing a fence or other support with twisting leaf petioles, and blooms on new growth. 'Comtesse de Bouchaud' can be cut back moderately at any time during spring or summer; like all clematises, this one should be planted so that its roots are shaded but new growth is in the sun.