Calandrinia grandiflora ‘Jazz Time’ (Cistanthe grandiflora ‘Jazz Time’)*
Callistemon viminalis ‘Little John’ (Melaleuca viminalis ‘Little John’)*
Carpinus betulus ‘Frans Fontaine’
Frans Fontaine European Hornbeam, Columnar European Hornbeam
Ceanothus griseus var. horizontalis (Ceanothus thyrsiflorus var. griseus)
Cercidium x ‘Desert Museum’ (Parkinsonia × ‘Desert Museum’)*
Cercis canadensis var. texensis ‘Oklahoma’ (Cercis reniformis ‘Oklahoma’)
Chondropetalum tectorum ‘El Campo’ (Elegia tectorum ‘El Campo’)*
Cistus x hybridus ‘Little Miss Sunshine’ (Cistus x hybridus ‘Dunnecis’ PP22364)
Clytostoma callistegioides (Bignonia callistegioides)* (Bignonia violacea)
Cordyline Design-a-Line Burgundy™ (‘ROMA06’) PP 24764 (Cordyline pumilio × banksii)
Cordyline hybrid Electric Pink™ (Cordyline banksii ‘Sprilecpink’ PP19213)
Cotoneaster dammeri ‘Coral Beauty’ (Cotoneaster x suecicus ‘Coral Beauty’)*
