Convallaria majalis Convallaria majalis 'Aureo-variegata'
Convallaria majalis 'Striata' Convolvulus althaeoides ssp. tenuissimus
Convolvulus cneorum Convolvulus sabatius
Convolvulus tricolor Convolvulus tricolor 'Royal Ensign'
Copernicia alba Copernicia baileyana
Copernicia ekmanii Copernicia fallense
Copernicia hospita Copernicia macroglossa
Copernicia prunifera 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 boissieri
Cordia laevigata Cordia nitida
Cordia parvifolia Cordia rickseckeri
Cordia sebestena Cordyline australis
Cordyline australis 'Purple Tower' Cordyline australis 'Red Star'
Cordyline australis 'Sundance' Cordyline banksii 'Sprilecpink (Electric Pink)'
Cordyline obtecta Cordyline terminalis
Cordyline terminalis 'Dr. Brown' Cordyline terminalis 'Exotica'
Coreopsis 'Creme Brule' Coreopsis 'Experimental Coreopsis COR118'
Coreopsis 'Limerock Dream' Coreopsis 'Limerock Passion'
Coreopsis 'Limerock Ruby' Coreopsis 'Tequila Sunrise'
Coreopsis auriculata Coreopsis auriculata 'Nana'
Coreopsis auriculata 'Zamphir' Coreopsis x delphinifolia 'Blue Mirror'
Coreopsis gigantea Coreopsis grandiflora 'Early Sunrise'
Coreopsis grandiflora 'Heliot' Coreopsis grandiflora 'Sunray'
Coreopsis grandiflora 'Walcoreop(Flying Saucers ™)' Coreopsis integrifolia
Coreopsis lanceolata Coreopsis lanceolata 'Baby Sun'
Coreopsis lanceolata 'Goldfink' Coreopsis lanceolata 'Sterntaler'
Coreopsis rosea Coreopsis rosea 'Alba'
Coreopsis rosea 'American Dream' Coreopsis rosea 'Sweet Dreams'
Coreopsis tinctoria Coreopsis tinctoria 'Mahogany Midget'
Coreopsis tinctoria 'Mardi Gras' Coreopsis verticillata 'Golden Gain'
Coreopsis verticillata 'Golden Showers' Coreopsis verticillata 'Grandiflora'
Coreopsis verticillata 'Moonbeam' Coreopsis verticillata 'Zagreb'
Coriaria japonica Coriaria myrtifolia
Cornukaempferia aurantiflora 'Jungle Gold' Cornus x 'Cream Crackers'
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
Cornus alternifolia 'Argentea' Cornus alternifolia 'W Stackman'
Cornus amomum 'Cinderella' Cornus asperifolia var. drummondii
Cornus canadensis Cornus capitata emeiensis(ssp)
Cornus chinensis 'Joy Forever' Cornus controversa
Cornus controversa 'Variegata' Cornus florida
Cornus florida 'Barton' Cornus florida 'Cherokee Chief™'
Cornus florida 'Cherokee Daybreak' Cornus florida 'Cherokee Princess'
Cornus florida 'Cherokee Sunset™' Cornus florida 'Cloud 9'
Cornus florida 'First Lady' Cornus florida 'Newport Dam'
Cornus florida 'Pendula' Cornus florida 'Plena'
Cornus florida 'Poinsett' Cornus florida 'Pygmaea'
Cornus florida 'Rainbow' Cornus florida 'Red Beauty®'
Cornus florida 'Rosea' Cornus florida 'Spring Grove®'
Cornus florida 'Sweetwater Red' Cornus florida 'Weaver's White'
Cornus florida 'Welchii' Cornus florida 'Wonderberry'
Cornus florida f. rubra Cornus florida f. rubra 'Cherokee Brave'
Cornus hemsleyi Cornus kousa
Cornus kousa 'Avalanche' Cornus kousa 'Elizabeth Lustgarten'
Cornus kousa 'Gold Star' Cornus kousa 'Milky Way'
Cornus kousa 'Miss Satomi' Cornus kousa 'National'
Cornus kousa 'Square Dance' Cornus kousa 'Sunsplash'
Cornus kousa 'White Dusted' Cornus kousa 'Wolf Eyes'
Cornus kousa var. angustata Cornus kousa var. chinensis
Cornus kousa X C. florida 'Eddies White Wonder™' Cornus kousa X C. florida 'Rutban(Aurora®)'
Cornus kousa X C. florida 'Rutcan(Constellation®)' Cornus kousa X C. florida 'Rutdan(Celestial®)'
Cornus kousa X C. florida 'Rutfan(Stardust®)' Cornus kousa X C. florida 'Rutgan(Stellar Pink®)'
Cornus kousa X C. florida 'Rutlan(Ruth Ellen®)' Cornus mas
Cornus mas 'Elegantissima' Cornus mas 'Golden Glory'
Cornus mas 'Spring Glow' Cornus mas 'Variegata'
Cornus nuttallii Cornus occidentalis
Cornus officinalis Cornus officinalis 'Kintoki'
Cornus pumila Cornus racemosa
Cornus racemosa 'Salvin's Dwarf' 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' Cornus stricta
Cornus walteri