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Perennial Clustered Bellflower has a twelve to eighteen inch stems topped with tight, almost ball-shaped, clusters of inch-long violet-blue trumpets that attract butterflies and hummingbirds. The flowers have no noticeable scent, longer stems can be used in fresh cut bouquets. In amended and moist soil, Clustered Bellflower can become a garden thug spreading by stolons; runners are usually shallow-rooted and easy to remove. Campanula glomerata prefers full sun to part shade, planting it in average to poor soil helps keep it from becoming a nuisance plant. Increase be division or seed, some catalogues may offer selections with white flowers.
