Perennials
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Campanula portenschlagiana (Dalmatian Bellflower)
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Campanula poscharskyana Blue Waterfall ‘Camgood’ (Serbian Bellflower)
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Campanula punctata ‘Silver Bells’ (Spotted Bellflower)
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Campanula sibirica ‘Royal Wedding’ (Siberian Bellflower)
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Campanula takesimana (Korean Bellflower)
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Campanula x ‘Sarastro’ (Bellflower)
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Campanula x ‘Birch Hybrid’ (Bellflower)
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Caulophyllum thalictroides (Blue Cohosh)
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Centaurea montana ‘Amethyst Dream’ (Mountain Cornflower)
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Centaurea montana ‘Amethyst in Snow’ (Mountain Cornflower)
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Cephalaria gigantea (Giant Pincushion Flower)
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Ceratostigma plumbaginoides (Plumbago)