Campanula portenschlagiana ''Clockwise''
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A truly fabulous hardy perennial and superb performer, this Campanula forms compact mounds of very pretty foliage, smothered with star-shaped purple-blue flowers over a very long period from early summer. Perfect in rockeries, hanging baskets, containers or on the edge of a garden. Thrives in full sun or semi-shade and well-drained soils. 20x30cm approximately.