Deciduous, cascading plants bearing star-shaped, violet-blue flowers from late spring through to summer. Height 20-25cm (8-10). Supplied in a 9cm pot. Front of border variety. Campanulas are versatile perennials that provide a wide range of colours & shapes. Easy to care for, they also have a long flowering time. Adrian Bloom says... Campanula p. Blue Waterfall was a seedling found on our patio several years ago. This vigorous, semi evergreen mounds of foliage produce long, prostrate stems covered in deep blue flowers in early summer. Cut back after flowering for a good autumn display. Very hardy & great for edging a path or bed, or hanging over a wall.