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Common Names: Clustered Bellflowers
Height: 14" to 18"
Flower color: Purple
Bloom time: Spring-Summer
Light: Full sun or part shade
Soil: Average to Rich, well drained
Other info:The main difference between Campanula glomerata and Campanula glomerata Superba is the size of the florets in the cluster. Superba has a larger florets. Also, Superba blooms 2-3 weeks earlier than the regular. My preference though is the standard Campanula glomerata.