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?Pearl Dark Blue? blooms from June until September, it generates violet-blue coloured, bell-shaped flowers that perch amongst mounds, of evergreen foliage. Its low growing habit makes it perfect for attractive ground cover, adding to rockeries and edging pathways and borders. This Campanula will grow in height to around 25cm and spread to around 45cm, it enjoys partial shade to grow and will add vibrancy and texture wherever placed in the garden. This pretty Tussock Bellflower looks fabulous when grow in a container, it is low maintenance and makes a bold statement in outdoor spaces.