Bellflower is part of the genus Campanula which encompasses a wide range of species, including perennials, bi-annuals and annuals. They vary in height from mere inches to 4- to 6-feet tall. They are all extremely hardy and attractive in rock gardens, borders, and cottage gardens. The bellflower grows to a height of 1 foot and has a spread of 1.5 feet when mature. It is a perennial with bell shaped, deep purplish-blue flowers (1.5 inches long), and blooms from June through July. This is a low-maintenance plant that prefers full sun to partial shade and well-drained soil. It has no serious insect or disease problems, which makes it a wonderful plant for the garden.
Check for any signs of disease and remove any diseased part of the plant. Even though the bellflower has no serious disease problems you want to make sure that you do not place any diseased plant material in your compost bin. Diseased plant material should be disposed of.
Clean your hand pruning shears if you had to cut off diseased plant material. You can dip them in bleach or wash them with detergent. You do not want to spread disease; tools can spread disease.
Cut back the plant stems from 2 to 4 inches from the ground after the first hard frost. Place the dead plant material in your compost bin.
Cover the plant bed with mulch. You can use leaves (which are readily available in the fall), hay, straw or evergreen boughs.