Campanula Glomerata Superba is most attractive to hummingbirds and butterflies. Bellflower Superba blooms in early summer on compact plants. This purple Bellflower spreads and is a very unique look to any garden or bed. It grows easily from flower seed. Once it’s established this plant need to be divided every 3-4 years. It prefers full sun. It also make a great cut flower. 25 seed