This is a wild flower that would not be out of place in any garden. It is very popular with bees too. The nettle-leaved bellflower (Campanula trachelium) is the most common of out native campanulas. Campanule is Latin for bell and when you see these lovely big bell shaped flowers it is not hard to see how they got their name.
This plant has a liking for woodlands and hedgerows on calcareous soils in southern (south of the Humber!) England. In Purbeck they can be found on the northern side of the Purbeck Ridge and are plentifulin late July and throughout August in the Creech area and especially at the entrance to the Dorset Wildlife Reserves of Kilwood and Stonehill Down.