Crambe cordifolia Crassula arborescens
Crassula capitella 'Campfire' Crassula muscosa
Crassula muscosa pseudolycopodiodes 'Princess Pine' Crassula ovata
Crassula ovata 'Pink Beauty' Crassula ovata 'Tricolor'
Crassula ovata 'Variegata' Crassula perfoliata var. falcata
Crassula pubescens radicans Crinum amabile
Crinum americanum Crinum asiaticum 'Cuprifolium'
Crinum asiaticum var. procerum Crinum asiaticum var. sinicum
Crinum bulbispermum Crinum moorei
Crinum x powellii Crinum x powellii 'Ellen Bosanquet'
Crinum spp. Crithmum maritimum
Crocosmia x crocosmiiflora Crocosmia x crocosmiiflora 'Emily McKenzie'
Crocosmia x crocosmiiflora 'George Davidson' Crocosmia x crocosmiiflora 'Lucifer'
Crocosmia x crocosmiiflora 'Norwich Canary' Crocosmia x crocosmiiflora 'Wallerton Red'
Crocosmia masonorum Crocus 'Violet Queen'
Crocus chrysanthus 'Advance' Crocus goulimyi
Crocus x hybridus Crocus pulchellus
Crocus sativus Crocus speciosus
Crocus tommasinianus Crocus tommasinianus 'Barr's Purple'
Crocus vernus ssp. vernus 'Jeanne d'Arc' Crossandra infundibuliformis
Crossandra infundibuliformis 'Florida Summer' Crossandra spp.
Cryptanthus bivittatus Cryptotaenia japonica 'Atropurpurea'
Ctenanthe oppenheimiana 'Tricolor' Cucurbita 'Cornell's'
Cucurbita 'Papaya Pear' Cucurbita pepo 'Butterstick'
Cucurbita pepo 'Orange Smoothie' Cucurbita pepo 'Sorcerer'
Cucurbita pepo 'Sunshine' Cuphea 'David Verity'
Cuphea 'Flamenco Samba' Cuphea 'Twinkle Pink'
Cuphea hyssopifola Cuphea ignea
Cuphea micropetala Curcuma alismatifolia
Curcuma australasica Curcuma elata
Curcuma longa Curcuma petiolata
Curcuma petiolata 'Emperor' Curcuma roscoeana
Curcuma roscoeana 'White Flame' Curcuma sumatrana
Curcuma thorellii Curcuma zedoaria
Cussonia paniculata Cyanastrum cordifolium var. compactum
Cyclamen coum Cyclamen hederifolium
Cyclamen hederifolium 'Silver Form' Cyclamen persicum
Cyclamen persicum 'Carmen' Cymbidium x
Cymbidium x 'Levis Duke Bella Vista' Cymbidium x 'Mary Bea'
Cymbopogon citratus Cynara cardunculus
Cynara scolymus Cynara scolymus 'Imperial Star'
Cynara scolymus 'Large Green Globe' Cynodon dactylon 'Austrailia'
Cynodon dactylon 'Santa Ana' Cynodon dactylon 'Sundial'
Cyperus albostriatus 'Variegatus' Cyperus alternifolius
Cyperus esculentus Cyperus haspan
Cyperus papyrus Cyperus papyrus 'Graceful Grasses™ King Tut®'
Cyphomandra crassicaulis Cyphostemma juttae
Cypripedium acaule Cypripedium calceolus
Cypripedium reginae Cyrtanthus spiralis
Cyrtomium falcatum