Clematis, Comtesse DeBouchard Overview Category: Vines Common Name: Clematis, Comtesse DeBouchard Botanical Name: Clematis 'Comtesse de Bouchard' Sun Exposure: Full sun Height: 8-12 ft. Spread: Varies See notes | Back to vines Notes Flowers are rose-pink, large, semi-double, with yellow stamens. Profuse bloomer. Blooms mid summer to mid Fall. Prune in early Spring to buds almost above ground level.