CALAMAGROSTIS arundinacea
CALAMAGROSTIS acutiflora ‘Karl Foerster’
CALAMAGROSTIS brachytricha
CALAMAGROSTIS acutiflora ‘Overdam’
CALAMINTHA nepeta ‘White Cloud’
CALCEOLARIA ‘Sultan’
CALLICARPA bodinieri giraldii ‘Profusion’
CALTHA palustris
CALTHA species ex. Tatra
CAMASSIA ‘John Treasure’
CAMASSIA leichtlinii suksdorfii
CAMELLIA japonica ‘Akashigata’
CAMPANULA cochleariifolia
CAMPANULA cochleariifolia ‘Elizabeth Oliver’
CAMPANULA latiloba ‘Alba’
CAMPANULA ochroleuca
CAMPANULA persicifolia alba
CAMPANULA garganica ‘Dickson’s Gold’
CAMPANULA primulifolia
CAMPANULA ex. Tatra
CAMPANULA cochlearifolia ‘Pixie White’
CAMPANULA persicifolia ‘George Chiswell’
CAMPANULA ex. Ron
CAMPANULA takesimana ‘Elizabeth II’
CAMPANULA ‘Kent Belle’
CAMPANULA punctata rubriflora
CAMPANULA persicifolia ‘Hampstead White’
CAMPANULA takesimana ‘Elizabeth’
CAMPANULA cochlearifolia ‘Pixie Blue’
CAMPANULA ‘Burghaltii’
CAMPSIS radicans
CANNA ‘Hybrids’
CARDAMINE heptaphylla white
CARDAMINE pentaphylla
CARDAMINE raphanifolia
CARDAMINE trifolia
CARDAMINE heptaphylla
CARDIOCRINUM cordatum glehnii
CARDIOCRINUM giganteum yunnanense
CAREX ‘China Blue’
CAREX comans
CAREX comans ‘Frosted Curls’
CAREX dipsacea
CAREX elata ‘Aurea’
CAREX ex. Russia
CAREX flagellifera ‘Auburn Cascade’
CAREX flagellifera ‘Coca Cola’
CAREX ex. Uganda
CAREX muskingumensis ‘Oehme’
CAREX muskingumensis ‘Wachtposten’
CAREX oshimensis ‘Evergold’
CAREX riparia ‘Variegata’
CAREX testacea
CAREX siderosticha ‘Variegata’
CAREX conica ‘Snowline’
CAREX muskingumensis ‘Little Midge’
CAREX baccans
CAREX duthiei
CAREX grayi
CAREX trifida
CAREX buchananii
CAREX comans ex. ‘Frosted Curls’
CAREX ‘Milk Chocolate’
CAREX muskingumensis
CAREX comans bronze
CAREX flagellifera
CARMICHAELIA ‘County Park’
CARPENTERIA californica ‘Bodnant’
CARPENTERIA californica ‘Ladhams’ Variety’
CARYOPTERIS incana weeping
CARYOPTERIS clandonensis ‘Longwood Blue’
CARYOPTERIS clandonensis
CATANANCHE caerulea ‘Bicolor’
CAUTLEYA spicata ‘Robusta’
CAUTLEYA spicata ex. ‘Robusta’
CAUTLEYA gracilis
CEANOTHUS ‘Concha’
CEANOTHUS ‘Autumnal Blue’
CELASTRUS orbiculatus
CELASTRUS orbiculatus ‘Diana’
CELASTRUS orbiculatus ‘Hercules’
CELMISIA vespertina
CELMISIA gracilenta
CELMISIA coriacea
CELMISIA armstrongii
CELMISIA mackaui
CELMISIA hookeri
CELMISIA spectabilis
CENTAUREA montana ‘Alba’
CENTAUREA montana ‘Grandiflora’
CENTAUREA montana ‘Parham’
CENTAUREA pulcherrima
CENTAUREA bella
CENTAUREA dealbata ‘Steenbergii’
CENTAUREA karabaghensis
CENTAUREA glastifolia
CENTAUREA hypoleuca ‘John Coutts’
CENTAUREA species ex. Uzbekistan
CENTAUREA macrocephala
CEPHALARIA alpina
CEPHALARIA gigantea
CEPHALARIA uralensis
CERATOSTIGMA plumbaginoides
CHAEROPHYLLUM hirsutum ‘Roseum’
CHASMANTHIUM latifolium
CHELIDONIUM majus ‘Flore Pleno’
CHELIDONIUM majus laciniatum
CHELONE glabra
CHERRY ‘Morello’
CHERRY ‘Stella’
CHERRY ‘Cherokee’
CHIMONOBAMBUSA quadrangularis
CHIONOCHLOA conspicua
CHIONOCHLOA rubra
CHIONODOXA luciliae
CHIONODOXA luciliae ‘Alba’
CHOISYA dumosa arizonica
CHOISYA ternata SUNDANCE
CHRYSANTHEMUM ‘Emperor of China’
CHRYSANTHEMUM maximum cultivar
CHRYSOGONUM davidii
CHRYSOPOGON gryllus
CHRYSOSPLENIUM macrophyllum
CHUSQUEA culeou ‘Cally Form’
CHUSQUEA culeou
CHUSQUEA species
CIMICIFUGA cordifolia ‘Blickfang’
CIMICIFUGA japonica
CIMICIFUGA matsumurae ‘Elstead’
CIMICIFUGA americana
CIMICIFUGA simplex Atropurpurea
CIMICIFUGA simplex ‘Brunette’
CIMICIFUGA simplex ‘Blackthorn Strain’
CIMICIFUGA simplex ‘Hokkaido Form’
CIMICIFUGA simplex ‘Silver Axe’
CIMICIFUGA simplex ex. ‘Silver Axe’
CIMICIFUGA yesoensis
CIMICIFUGA foetida ‘Czech Form’
CIMICIFUGA simplex variegated
CIMICIFUGA species
CIMICIFUGA species ex Korea
CIMICIFUGA dahurica
CIMICIFUGA europaea
CIMICIFUGA yunnanensis
CIMICIFUGA simplex ‘Prichard’s Giant’
CIMICIFUGA foetida
CIMICIFUGA racemosa
CIMICIFUGA arizonica
CIMICIFUGA simplex ‘James Compton’
CIONURA oreophila
CISTUS x aguilarii ‘Maculatus’
CLEMATIS afoliata
CLEMATIS alpina
CLEMATIS alpina ‘Frances Rivis’
CLEMATIS armandii ‘Snowdrift’
CLEMATIS ‘Bill MacKenzie’
CLEMATIS ex. Korea
CLEMATIS heracleifolia ‘Cassandra’
CLEMATIS ‘Jackmanii’
CLEMATIS macropetala ‘Markham’s Pink’
CLEMATIS montana ‘Alexander’
CLEMATIS montana sericea
CLEMATIS ‘Mrs Cholmondeley’
CLEMATIS recta ‘Velvet Night’
CLEMATIS rehderiana
CLEMATIS tangutica ‘Scented Form’
CLEMATIS bonstedtii ‘Crépuscule’
CLEMATIS jouiniana ‘Côte d’Azur’
CLEMATIS triternata ‘Rubromarginata’
CLEMATIS mandschurica
CLEMATIS heracleifolia
CLEMATIS heracleifolia ‘China Purple’
CLEMATIS hirsutissima
CLEMATIS occidentalis
CLEMATIS ‘Perle d’Azur’
CLEMATIS cirrhosa ‘Wisley Cream’
CLEMATIS ‘Huldine’
CLEMATIS campaniflora
CLEMATIS ‘Mrs Robert Brydon’
CLEMATIS integrifolia ‘Hendersonii’
CLETHRA alnifolia ‘Rosea’
CLETHRA arborea
CLETHRA alnifolia
CLETHRA alnifolia ‘Pink Spire’
CODONOPSIS clematidea
CODONOPSIS lancifolia
CODONOPSIS cardiophylla
CODONOPSIS dicentrifolia
CODONOPSIS lanceolata
CODONOPSIS clematidea ‘Selected’
COLCHICUM byzantinum
COLCHICUM speciosum ‘Album’
COLCHICUM corsicum
COLCHICUM agrippinum
COLCHICUM ‘Waterlily’
COLCHICUM autumnale
COLLETIA paradoxa
COLLETIA hystrix
COLQUHOUNIA coccinea vestita
COLUTEA orientalis
COMMELINA tuberosa ‘Alba’
COMMELINA tuberosa Coelestis
COMMELINA dianthifolia
CONVALLARIA keiskei
CONVALLARIA majalis rosea
CONVALLARIA majalis ‘Variegata’
CONVALLARIA majalis ex. Tatra
CONVALLARIA majalis
CONVOLVULUS cantabricus
CONVOLVULUS cneorum
CORDYLINE banksii
COREOPSIS rosea
COREOPSIS verticillata
CORIARIA microphylla
CORIARIA myrtifolia
CORIARIA napalensis
CORIARIA sarmentosa
CORIARIA terminalis xanthocarpa
CORNUS alba ‘Kesselringii’
CORNUS alba ‘Aurea’
CORNUS alternifolia ‘Argentea’
CORNUS alba ‘Sibirica’
CORNUS sanguinea ‘Midwinter Fire’
CORNUS alba ‘Elegantissima’
CORONILLA varia
CORONILLA valentina glauca ‘Citrina’
CORREA backhouseana
CORYDALIS
CORYDALIS flexuosa ‘China Blue’
CORYDALIS flexuosa ‘Père David’
CORYDALIS flexuosa ‘Purple Leaf’
CORYDALIS ophiocarpa
CORYDALIS lutea
CORYDALIS chaerophylla
CORYDALIS ochroleuca
CORYLUS avellana ‘Contorta’
COSMOS atrosanguineus
COTONEASTER atropurpureus ‘Variegatus’
COXELLA dieffenbachii
CRAMBE cordifolia
CREPIS incana
CRINUM bulbispermum
CRINUM powellii
CRINUM powellii ‘Album’
CROCOSMIA aurea
CROCOSMIA ‘Bressingham Blaze’
CROCOSMIA ‘Custard Cream’
CROCOSMIA ex. Malahide
CROCOSMIA ‘Mars’
CROCOSMIA ‘Mount Usher’
CROCOSMIA ‘Orangeade’
CROCOSMIA ‘Rowallane Yellow’
CROCOSMIA ‘Zeal Tan’
CROCOSMIA ‘Dusky Maiden’
CROCOSMIA ‘E.A. Bowles’
CROCOSMIA ‘George Davison’
CROCOSMIA ‘James Coey’
CROCOSMIA ‘Jessie’
CROCOSMIA ‘Lady Oxford’
CROCOSMIA ‘Sulphurea’
CROCOSMIA ‘Vesuvius’
CROCOSMIA ‘Solfatare’
CROCOSMIA ‘Lucifer’
CROCOSMIA ‘Lady Hamilton’
CROCOSMIA ‘Culzean Peach’
CROCOSMIA ‘Lana de Savary’
CROCOSMIA ‘Saracen’
CROCOSMIA cultivar
CROCOSMIA ‘Kiatschou’
CROCOSMIA ‘Walberton Yellow’
CROCOSMIA ‘Emberglow’
CROCOSMIA latifolia ‘Castle Ward Late’
CROCOSMIA ‘Carmin Brillant’
CROCOSMIA ‘Jenny Bloom’
CROCOSMIA ‘Emily McKenzie’
CROCOSMIA ‘Large Apricot’
CROCOSMIA ‘Gerbe d’Or’
CROCOSMIA ‘Malahide Castle’
CROCOSMIA ex. Swaziland
CROCOSMIA paniculata ‘Cally Sword’
CROCOSMIA paniculata
CROCOSMIA ‘Star of the East’
CROCOSMIA ‘Late Lucifer’
CROCOSMIA ‘Short Apricot’
CROCOSMIA ‘Jackanapes’
CROCUS nudiflorus
CROCUS sieberi ‘Firefly’
CROCUS chrysanthus ‘Romance’
CRYPTOTAENIA japonica atropurpurea
CURTONUS paniculatus ‘Cally Greyleaf’
CYCLAMEN coum
CYCLAMEN hederifolium
CYCLAMEN coum Silver Group
CYCLAMEN hederifolium ‘Album’
CYCLAMEN purpurascens
CYMOPHYLLUS fraserianus
CYNANCHUM acuminatifolium
CYNANCHUM nigrum
CYNARA cardunculus
CYNARA baetica
CYNARA cardunculus Scolymus Group
CYNARA cardunculus dwarf
CYPERUS longus
CYPERUS esculentus
CYRTANTHUS rhodesianus
CYRTOMIUM falcatum
CYRTOMIUM fortunei
CYRTOMIUM fortunei clivicolor