The flowering time of the Campanula is during the spring and in the summer. The Campanula is usually sold when the plant is in bloom. The plant needs water three or four times a week; and preferably every day with full sunlight. When the Campanula is planted in larger pots with a lot of soil, large amounts of water can be added at once during sunny periods. In this way, the plant can last longer without immediate care. The Campanula requires plant nutrients once every two weeks. By removing the flowers that have finished flowering, you can enjoy the Campanula even longer.