Canna flaccida Canna x generalis
Canna x generalis 'Ambassador' Canna x generalis 'Australia'
Canna x generalis 'Brandywine' Canna x generalis 'Conestoga'
Canna x generalis 'Lenape' Canna x generalis 'Pretoria'
Canna x generalis 'Primrose Yellow' Canna x generalis 'Tropical Rose'
Canna x generalis 'Tropicana' Canna indica
Canna iridiflora Cantua buxifolia
Capiopoa graseltowna Capparis cynophallophora
Capparis flexuosa Capparis spinosa
Capsicum annuum var. annuum Capsicum annuum var. annuum 'Ace'
Capsicum annuum var. annuum 'Banana Supreme' Capsicum annuum var. annuum 'Black Pearl'
Capsicum annuum var. annuum 'Black Prince' Capsicum annuum var. annuum 'Blushing Beauty'
Capsicum annuum var. annuum 'Carmen' Capsicum annuum var. annuum 'Chilly Chili'
Capsicum annuum var. annuum 'Explosive Ember' Capsicum annuum var. annuum 'Explosive Ignite'
Capsicum annuum var. annuum 'Fiesta' Capsicum annuum var. annuum 'Holiday Cheer'
Capsicum annuum var. annuum 'Holy Mole' Capsicum annuum var. annuum 'Marbles'
Capsicum annuum var. annuum 'Mariachi' Capsicum annuum var. annuum 'Melody'
Capsicum annuum var. annuum 'Pretty in Purple' Caragana arborescens
Caragana arborescens 'Globosa' Caragana arborescens 'Pendula'
Caragana brevifolia Caragana frutex
Caragana pygmaea Cardamine laciniata
Cardiospermum halicacabum Carex 'Bad Hair Day'
Carex buchananii Carex comans
Carex comans 'Frosted Curls' Carex conica
Carex conica 'Snowline' Carex divulsa 'Kaga-nishiki'
Carex elata Carex elata 'Bowles Golden'
Carex firma 'Variegata' Carex flagellifera
Carex flagellifera 'Graceful Grasses™ (Toffee Twist)' Carex glauca
Carex glauca 'Blue Zinger' Carex grayi
Carex hachijoensis 'Evergold' Carex hachijoensis 'Gold Strike'
Carex laxiculmis 'Hobb (Bunny Blue™)' Carex morrowii
Carex morrowii 'Aurea-variegata' Carex morrowii 'Goldband'
Carex morrowii 'Ice Dance' Carex muskingumensis 'Ice Fountains'
Carex phyllocephala 'Sparkler' Carex siderosticha 'Island Brocade'
Carex siderosticha 'Variegata' Carex spp.
Carex testacea Carica papaya
Carissa macrocarpa Carissa macrocarpa 'Boxwood Beauty'
Carissa macrocarpa 'Horizontalis' Carmichaelia exsul
Carnegiea gigantea Carpentaria acuminata
Carpenteria californica Carpenteria californica 'Elizabeth'
Carpinus betulus Carpinus betulus 'Fastigiata'
Carpinus betulus 'Pendula' Carpinus caroliniana
Carpinus caroliniana var. virginiana Carpinus cordata
Carpinus coreana Carpinus japonica
Carpinus laxiflora Carpinus turczaninowii
Carpobrotus aequilaterus Carpobrotus chilensis
Carpobrotus edulis Carpolepis laurifolia