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perennial

Clustered Bellflower

Campanula glomerata

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Clustered Bellflower (Campanula glomerata) at Valley View Farms

Clustered Bellflower flowers

Clustered Bellflower flowers

(Photo courtesy of NetPS Plant Finder)

Plant Height:  12 inches

Flower Height:  24 inches

Spread:  18 inches

Sunlight:  full sun  partial shade 

Hardiness Zone:  2a

Ornamental Features

Clustered Bellflower has masses of beautiful clusters of purple flowers at the ends of the stems from early to mid summer, which are most effective when planted in groupings. The flowers are excellent for cutting. Its heart-shaped leaves remain green in color throughout the season. The fruit is not ornamentally significant.

Landscape Attributes

Clustered Bellflower is an herbaceous perennial with an upright spreading habit of growth. Its relatively coarse texture can be used to stand it apart from other garden plants with finer foliage.

This is a high maintenance plant that will require regular care and upkeep, and should only be pruned after flowering to avoid removing any of the current season's flowers. Gardeners should be aware of the following characteristic(s) that may warrant special consideration;

  • Invasive

Clustered Bellflower is recommended for the following landscape applications;

  • Mass Planting
  • General Garden Use
  • Naturalizing And Woodland Gardens
  • Container Planting

Planting & Growing

Clustered Bellflower will grow to be about 12 inches tall at maturity extending to 24 inches tall with the flowers, with a spread of 18 inches. Its foliage tends to remain dense right to the ground, not requiring facer plants in front. It grows at a fast rate, and under ideal conditions can be expected to live for approximately 8 years.

This plant does best in full sun to partial shade. It prefers to grow in average to moist conditions, and shouldn't be allowed to dry out. It is not particular as to soil type, but has a definite preference for alkaline soils. It is highly tolerant of urban pollution and will even thrive in inner city environments. This species is not originally from North America. It can be propagated by division.

Clustered Bellflower is a fine choice for the garden, but it is also a good selection for planting in outdoor pots and containers. With its upright habit of growth, it is best suited for use as a 'thriller' in the 'spiller-thriller-filler' container combination; plant it near the center of the pot, surrounded by smaller plants and those that spill over the edges. Note that when growing plants in outdoor containers and baskets, they may require more frequent waterings than they would in the yard or garden.

 
 
Hardiness Zone Plant Height Minimum Sunlight Soil pH Preference
Characteristics
Massing  Garden  Naturalizing  Container 
Applications
Flowers 
Ornamental Features
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