• Calamintha 'Blue Cloud'
  • Calamintha 'Montrose White'
  • Campanula 'Birch's Hybrid'
  • Campanula carpatica 'Blue Uniform'
  • Campanula carpatica 'White Uniform'
  • Campanula 'Pink Octopus'
  • Campanula 'Pink Octopus'
  • Campanula poscharskyana 'Blue Waterfalls'
  • Centaurea montana 'Blue'
  • Centaurea montana 'Blue'
  • Cerastium tomentosum 'Yoyo'
  • Chelone lyonii
  • Chrysanthemum 'Clara Curtiss'
  • Chrysanthemum zwadski i'Samba'
  • Chrysanthemum zwadskii 'Shefffield Pink'
  • Chrysanhemum zwadskii 'Cambodian Queen'
  • Chrysanthemum zwadskii 'Rhumba'
  • Chrysanthemum zwadskii 'Bolero'
  • Chrysanthemum zwadskii 'Harmony'
  • Chrysanthemum zwadskii 'Snow Princess'
  • Cimicifuga racemosa
  • Cimifuga ramosa 'Brunette'
  • Cimicifuga ramosa 'White Pearl'
  • Coreopsis auriculata 'Nana'
  • Coreopsis 'Full Moon'
  • Coreopsis 'Jethro Tull'
  • Coreopsis verticillata 'Moonbeam'
  • Coreopsis verticillata 'Zagreb'
  • Crocosmia 'Emberglow'
  • Crocosmia 'Emberglow'
  • Crocosmia 'Emily McKenzie'
  • Crocosmia 'George Davidson'
  • Crocosmia 'Lucifer'