Chimaphila maculata Chimonobambusa marmorea
Chionochloa flavescens Chionodoxa forbesii
Chionodoxa luciliae Chionodoxa luciliae 'Pink Giant'
Chirita x 'Moon Walker' Chirita eburnea
Chlorophytum comosum Chlorophytum comosum 'Variegatum'
Chrysanthemum x 'Minnruby' Chrysanthemum carinatum
Chrysanthemum coronarium 'Primrose Gem' Chrysocephalum 'Flambe™ Orange'
Chrysocephalum 'Flambe™ Yellow' Chrysocephalum apiculatum 'Flochrora (Flambe® Orange)'
Chrysogonum virginianum Chrysogonum virginianum 'Pierre'
Chrysopsis graminifolia Chrysothemis pulchella
Cicerbita plumieri Cichorium intybus
Cichorium intybus 'Marina' Cirsium arvense
Cirsium vulgare Cissus discolor
Cissus rhombifolia Cissus rhombifolia 'Ellen Danica'
Cissus rhombifolia 'Mandaiana' Citrullus lanatus
Citrullus lanatus 'Seedless Red Flesh' Citrullus lanatus 'Sweet Beauty'
Clarkia amoena Clarkia amoena 'Dwarf Mix Improved'
Clarkia bottae Clarkia pulchella
Claytonia virginica Cleistocactus baumannii
Cleistocactus fieldianus Cleistocactus hyalacanthus
Cleistocactus samaipatanus Cleistocactus sextonianus
Cleistocactus strausii Clematis
Clematis 'Asao' Clematis 'Blue Angel (Blekitny Aniol)'
Clematis 'Cardinal Wyszynski' Clematis 'Carnaby'
Clematis 'Dorota' Clematis 'Guernsey Cream'
Clematis 'John Paul II' Clematis 'Miss Bateman'
Clematis 'Mme Le Coultre' Clematis 'Montana Rubens'
Clematis 'Mrs. N. Thompson' Clematis 'Multi Blue'
Clematis 'Pink Fantasy' Clematis 'Ramona'
Clematis 'Sho-Un' Clematis 'Silver Moon'
Clematis 'Snow Queen' Clematis 'Sunset'
Clematis 'Sweet Summer Love' Clematis 'Vyvyan Pennell'
Clematis 'Warsaw Nike' Clematis 'Will Goodwin'
Clematis (z)(Florida Group) 'Belle of Woking' Clematis (z)(Florida Group) 'Duchess of Edinburgh'
Clematis (z)(Jackmanii Group) 'Comtesse de Bouchard' Clematis (z)(Jackmanii Group) 'Gipsy Queen'
Clematis (z)(Jackmanii Group) 'Hagley Hybrid' Clematis (z)(Jackmanii Group) 'Jackmanii'
Clematis (z)(Jackmanii Group) 'Madame Edourd Andre' Clematis (z)(Jackmanii Group) 'Mrs. Cholmondeley'
Clematis (z)(Jackmanii Group) 'Niobe' Clematis (z)(Jackmanii Group) 'Perle d'Azur'
Clematis (z)(Jackmanii Group) 'Prince Phillip' Clematis (z)(Jackmanii Group) 'Serenata'
Clematis (z)(Jackmanii Group) 'Star of India' Clematis (z)(Jackmanii Group) 'Violet Star Gazer'
Clematis (z)(Lanuginosa Group) 'General Sikorski' Clematis (z)(Lanuginosa Group) 'Henryi'
Clematis (z)(Lanuginosa Group) 'Nelly Moser' Clematis (z)(Patens Group) 'Bee's Jubilee'
Clematis (z)(Patens Group) 'Doctor Ruppel' Clematis (z)(Patens Group) 'Elsa Spath'
Clematis (z)(Patens Group) 'Gillian Blades' Clematis (z)(Patens Group) 'The President'
Clematis (z)(Viticella Group) 'Betty Corning' Clematis (z)(Viticella Group) 'Ernest Markham'
Clematis (z)(Viticella Group) 'Etiole Violette' Clematis (z)(Viticella Group) 'Lady Betty Balfour'
Clematis (z)(Viticella Group) 'Madame Julia Correvon' Clematis (z)(Viticella Group) 'Minuet'
Clematis (z)(Viticella Group) 'Ville de Lyon' Clematis addisonii
Clematis armandii Clematis heracleifolia 'Alan Bloom'
Clematis integrifolia Clematis integrifolia 'Hanajina'
Clematis integrifolia 'Rose Colored Glasses' Clematis integrifolia 'Rosea'
Clematis x jackmanii Clematis x jackmanii 'Purpurea Superba'
Clematis lanuginosa 'Candida' Clematis lanuginosa 'Red Cardinal'
Clematis macropetala 'Markham's Pink' Clematis montana
Clematis montana 'Alexander' Clematis montana var. rubens
Clematis ochroleuca Clematis paniculata
Clematis recta 'Purpurea' Clematis tangutica
Clematis tangutica 'Helios' Clematis terniflora
Clematis texensis 'Duchess of Albany' Clematis tibetana
Clematis virginiana Clematis viticella 'Ramona'