Chocolate anthers and deep green foliage add elegance to this almost perfectly white clematis. A classic choice, blooming in June and September and a winner of the Royal Horticultural Society's Award of Garden Merit. Prefers full sun but tolerates morning shade. Support with posts or trellis, or let vines clamber over shrubs. Thrives in well-drained soil. Mulch around the roots to keep cool them and shaded.