This lovely variety has slightly larger flowers than the common species, and they are a deeper shade of blue. Bluebells of Scotland starts blooming in late spring and continues throughout summer and early fall. It's one of the longest-blooming perennials.
Campanula rotundifolia is a wonderful flower for planting around roses, shrubs, lilies, and other tall plants. The blue color goes well with practically anything. Also known as Scottish Harebell. Hardy in zones 3-9.