Cistus x Cistus x 'Grayswood Pink'
Cistus 'Santa Cruz' Cistus 'Snow Fire'
Cistus 'Victor Reiter' Cistus x argenteus 'Blushing Peggy Sammons'
Cistus x corbariensis Cistus crispus
Cistus ladanifer Cistus psilosepalus
Cistus x pulverulentus 'Sunset' Cistus x purpureus
Cistus salviifolius Cistus salviifolius 'Prostratus'
Cistus x skanbergii X Citrofortunella microcarpa 'Tiger'
Citrus limon Citrus limon 'Eureka'
Citrus limon 'Meyer' Clerodendrum bungei
Clerodendrum paniculatum 'Borneo Sunset' Clerodendrum philippinum
Clerodendrum quadriloculare Clerodendrum speciosissimum
Clerodendrum trichotomum Clerodendrum trichotomum var. fargesii 'Carnival'
Clerodendrum ugandense Clerodendrum wallichii
Clethra acuminata Clethra alnifolia
Clethra alnifolia 'Ann Bidwell' Clethra alnifolia 'Caleb (Vanilla Spice®)'
Clethra alnifolia 'Compacta' Clethra alnifolia 'Crystalina (Sugartina® Crystalina)'
Clethra alnifolia 'Fern Valley Pink' Clethra alnifolia 'Hummingbird'
Clethra alnifolia 'Rosea' Clethra alnifolia 'Ruby Spice'
Clethra alnifolia 'September Beauty' Clethra barbinervis
Clianthus puniceus Cliftonia monophylla
Cocculus laurifolius Codiaeum variegatum
Codiaeum variegatum 'Desiraeli' Codiaeum variegatum 'Miss Peters'
Codiaeum variegatum var. pictum Codiaeum variegatum var. pictum 'Iceton Yellow'
Codiaeum variegatum var. pictum 'Norma' Coffea arabica
Coleonema pulchrum Coleonema pulchrum 'Sunset Gold'
Colubrina arborescens Combretum coccineum
Combretum erythrophyllum Combretum fruticosum
Comptonia peregrina Coprosma x 'Beatsons Gold'
Coprosma x 'Coppershine' Coprosma x kirkii
Coprosma x kirkii 'Variegata' Coprosma repens
Coprosma repens 'Marble Queen' Coprosma repens 'Pink Splendor'
Coprosma repens 'Variegata' Cordia parvifolia
Cordyline australis 'Red Star' Coriaria japonica
Coriaria myrtifolia Cornus alba 'Bailhalo (Ivory Halo®)'
Cornus alba 'Bud's Yellow' Cornus alba 'Elagantissima'
Cornus alba 'Gouchaultii' Cornus alba 'Kesselringii'
Cornus alba 'Siberica Variegata' Cornus alba 'Spaethii'
Cornus alternifolia 'W Stackman' Cornus amomum 'Cinderella'
Cornus capitata emeiensis(ssp) Cornus hemsleyi
Cornus occidentalis Cornus pumila
Cornus sanguinea 'Cato (Artic Sun™)' Cornus sanguinea 'Compressus'
Cornus sanguinea 'Midwinter Fire' Cornus sanguinea 'Winter Flame'
Cornus stolonifera Cornus stolonifera 'Allman's Compact'
Cornus stolonifera 'Baileyi' Cornus stolonifera 'Cardinal'
Cornus stolonifera 'Farrow(Arctic Fire™)' Cornus stolonifera 'Kelseyi'
Cornus stolonifera 'Kelseys Gold' Cornus stolonifera 'Neil Z (Pucker Up!®)'
Cornus stolonifera 'Silver and Gold' Cornus stolonifera 'White Gold'
Corokia x virgata 'Yellow Wonder'