Campanula glomerata
Deciduous Perennial

USDA Zones: 3 - 8
Light: sun; partial shade in Zones 7 and warmer
Height:  16-24 inches
Width:  12 inches
Flower Colors: shades of blue, purple
Bloom Time: late spring - fall
Special Features:
CutFlowers
Flowers
Companion Plants:
Coreopsis

Clustered bellflower produces showy, five-petaled, bell-shaped flowers that come in shades of blue, purple, and pink. They usually bloom for at least several weeks in summer and make excellent cut flowers, lasting for a week or more in the vase.

The plant's bell-shaped flowers are packed in dense clusters along the upright stem. Bellflower is well-suited to the middle of the perennial border, and looks best planted in substantial groups.

Notable Varieties
'Joan Elliot' grows 18-inches tall and produces violet flowers from May into June.
'Superba' reaches 24 inches and sports rich purple flowers in summer.
'Caroline' grows 24 inches tall, and produces large clusters of lavender flowers in May and June.

Care
Campanula does best in full sun in moist soil that is rich in organic matter with ample moisture. Removed faded flowers to promote reblooming. Fertilize by mulching with compost once or twice a year. In Zones 3 to 6, mulch with pine boughs or chopped autumn leaves after the first frost for winter protection.Be aware that bellflower can be a vigorous grower, sending out rhizomes that can produce new plants. Watch for invasive behavior particularly in moist soils.

Planting
Plant in full sun in moist, well-drained soil, adding plenty of compost to the soil. Plant spacing is dependent on variety. Many species can be propagated from seed. Divide at least every three years, annually in areas with mild winters. Replant the vigorous divisions from the clump's outer portion, usually every 3-5 years.

Pests and Diseases
Snails and slugs may be troublesome.