Camelia sasanqua
Camelia sasanqua 'Cleopatra'
Camelia sasanqua 'Kanjiro'
Carpinus betulus
Carpinus betulus 'Fastigiata'
Carpinus betulus 'Frans Fontaine'
Carpinus betulus 'Lucas'
Carpinus japonica
Carya cordinformis
Castanea sativa
Catalpa bignonioides
Catalpa bignonioides 'Aurea'
Catalpa bignonioides 'Bungeii'
Ceanothus arboreus
Ceanothus arboreus 'Trewithin Blue'
Cedrus atlantica
Cedrus brevifolia
Cedrus deodara
Cedrus deodara 'Aurea'
Cedrus libani
Celtis occidentalis
Cephalotaxus fortuni
Cerasus avium
Cercis canadensis
Cercis canadensis 'Forest Pansy'
Cercis siliquastrum 'Alba'
Chamaecyparis lawsoniana
Chamaecyparis lawsoniana 'Stewartii'
Chamaecyparis pisifera
Chamaecyparis pisifera 'Squarrosa'
Chitalpa taskentensis
Chitalpa taskentensis 'Summer Bells'
Cladastris kentukea
Clerodendron trichotomum 'Purple Blaze'
Cornus alba
Cornus alba 'Sibirica'
Cornus controversa 'Variegata'
Cornus kousa
Cornus kousa 'China Girl'
Cornus kousa 'Chinensis'
Cornus kousa 'Milky Way'
Cornus kousa 'Stella Pink'
Cornus mas
Cornus mas 'Golden Glory'
Cornus mas 'Variegata'
Cornus sanguinea
Cornus sanguinea 'Amy's Winter Orange'
Corylus avellana
Corylus avellana 'Zellernus'
Corylus colurna
Corylus maxima
Corylus maxima 'Purpurea'
Cotinus americanus
Cotinus coggyria
Cotinus coggyria 'Royal Purple'
Cotoneaster
Cotoneaster 'Conurbia'
Cotoneaster 'Hybridus Pendulus'
Cotoneaster franchetii
Cotoneaster microphyllus
Crataegus x media
Crataegus x media 'Punicea Flore Plena'
Cotoneaster x wateri
Crataegus crus-gallii
Crataegus laevigata
Crataegus laevigata 'Aldoplena'
Crataegus laevigata 'Paul's Scarlet'
Crataegus monogyna 'Fastigiata'
Crataegus monogyna 'Alboplena'
Crataegus monogyna 'Stricta'
Crataegus prunifolia 'Splendens'
Crataegus punctata
Crataegus succulenta
Crataegus succulenta 'Julilee'
Crataegus x grignonensis
Crataegus x lavallei
Crataegus x lavalleei 'Carrierei'
Cryptomeria japonica
Cryptomeria japonica 'Elegans'
Cupressocyparis leylandii
Cupressus arizonica
Cupressus arizonica 'Glauca'
Cupressus sempervirens
Cydonia oblonga