Callicarpa bodinieri var. giraldii ‘Profusion’
Camassia Leichtlinii subsp.suksdorfii ‘caerulea’
Camellia ‘Adelina Patti’
Camellia ‘Apollo’
Camellia ‘Bob Hope’
Camellia ‘Bow Bells’
Camellia ‘Cornish Snow’
Camellia ‘Imbricata Rubra’
Camellia ‘Lady Clare’
Camellia × williamsii ‘Debbie’
Camellia × williamsii ‘Donation’
Camellia japonica ‘Elegans’
Camellia japonica ‘Jupiter’
Camellia japonica ‘Magnoliliflora’
Camellia japonica ‘Mikenjaku’
Camellia japonica ‘R.L. Wheeler’
Camellia warleyensis
Campanula ‘Royal Wave’
Campanula cochlearifolia
Campanula latifolia
Campanula pulla ‘Jelly Bells’
Campanula rotundiflora ‘White Gem’
Canna ‘Durban’
Cardamine quercifolia
Carrierea calycina
Cassia corymbosa
Catalpa bignonioides
Ceanothus arboreus ‘Trewithen Blue’
Cedrus libani
Centaurea montana ‘Rosea’
Cercidiphyllum japonicum
Cercis canadensis ‘Forest Pansy’
Cestrum fasciculatum
Cestrum parqui
Cestrum purpuruem ‘Scarlet Cluster’
Chaenomeles cathayensis
Chaenomeles Madame Butterfly
Chaenomeles speciosa ‘Yukigotan’
Chaerophyllum hirsutum ‘Roseum’
Chamaecyparis lawsoniana ‘Imbricata Pendula’
Chamaecyparis lawsoniana ‘Parsons’
Chamaecyparis lawsoniana ‘Pelt’s Blue’
Chrysanthumum x rubellum ‘Clara Curtis’
Cichorium intybus
Clematis ‘Annie Treasure’
Clematis ‘Broughton Bride’
Clematis ‘Etoile Violette’
Clematis ‘Fleuri’
Clematis ‘Hagley Hybrid’
Clematis ‘Ice Queen’
Clematis ‘Lawsoniana’
Clematis ‘Madame Julia Correvon’
Clematis ‘Perle D’Azur’
Clematis ‘Poldice’
Clematis ‘Romantika’
Clematis ‘Sympatia’
Clematis ‘Tage Lundell’
Clematis ‘Victoria’
Clematis ‘Warwickshire Rose’
Clematis fusca
Clematis macropetala ‘Wesselton’
Clematis tangutica
Clematis tangutica ‘Bill MacKenzie’
Clerodendrum bungei
Clerodendrum trichotomum var. fargesii
Colletia armata ‘Rosea’
Colletia hystrix
Colquhounia coccinea
Commelina robusta
Cornus ‘Ormonde’
Cornus canadensis
Cornus controversa
Cornus florida f. rubra ‘Spring Song’
Cornus kousa ‘Eva’
Cornus kousa ‘Miss Satomi’
Cornus kousa ‘Samaritan’
Cornus nuttallii ‘Gold Spot’
Cornus nuttallii ‘Monarch’
Cornus sanguinea ‘Anny’s Winter Orange’
Cornus sericea ‘Flaviramea’
Cortaderia selloana
Corydalis solida
Corylopsis willmottiae
Corylopsis willmottiae ‘Spring Purple’
Cotoneaster horizontalis
Crataegus schraderiana
Crataegus x lavallee ‘Carrierei’
Crinum x powellii
Crocosmia ‘Hellfire’
Crocosmia ‘Paul’s Best Yellow’
Crocosmia ‘Phillipa Browne’
Crocosmia ‘Rex’
Crocosmia × crocosmiiflora ‘Emily Mackenzie’
Crocus tommasinianus
Cryptomeria japonica ‘Sekka-sugi’
Cuphea hyssopifolia
Cupressus arizonica var. glabra ‘Blue Ice’
Cupressus arizonica var. glabra ‘Fastigiata’
