White Clustered Bellflower
Campanula glomerata var. alba
White Clustered Bellflower flowers
(Photo courtesy of NetPS Plant Finder)
Height: 24 inches
Spread: 24 inches
Hardiness Zone: 3b
Other Names: Campanula glomerata Alba
A vigorous variety producing clusters of star-shaped, pure white bellflowers on upright stems, over mounded, deep green foliage; great for containers, small beds, rock gardens, and along border fronts; prefers moist soil
White Clustered Bellflower features showy clusters of white bell-shaped flowers at the ends of the stems from early to mid summer. The flowers are excellent for cutting. Its tomentose pointy leaves remain forest green in color throughout the season.
White Clustered Bellflower is an herbaceous perennial with an upright spreading habit of growth. Its medium texture blends into the garden, but can always be balanced by a couple of finer or coarser plants for an effective composition.
This plant will require occasional maintenance and upkeep, and should only be pruned after flowering to avoid removing any of the current season's flowers. It is a good choice for attracting butterflies to your yard, but is not particularly attractive to deer who tend to leave it alone in favor of tastier treats. It has no significant negative characteristics.
White Clustered Bellflower is recommended for the following landscape applications;
- Mass Planting
- Rock/Alpine Gardens
- General Garden Use
- Naturalizing And Woodland Gardens
- Container Planting
Planting & Growing
White Clustered Bellflower will grow to be about 24 inches tall at maturity, with a spread of 24 inches. Its foliage tends to remain dense right to the ground, not requiring facer plants in front. It grows at a medium rate, and under ideal conditions can be expected to live for approximately 8 years. As an herbaceous perennial, this plant will usually die back to the crown each winter, and will regrow from the base each spring. Be careful not to disturb the crown in late winter when it may not be readily seen!
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 acidic soils. It is highly tolerant of urban pollution and will even thrive in inner city environments. This species is not originally from North America.
White 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. It is even sizeable enough that it can be grown alone in a suitable container. Note that when growing plants in outdoor containers and baskets, they may require more frequent waterings than they would in the yard or garden.