'Callaway' Flowering Crabapple Callery Pear 'Aristocrat™'
Callery Pear 'Autumn Blaze' Callery Pear 'Bradford'
Callery Pear 'Capital' Callery Pear 'Chanticleer'
Callery Pear 'Cleprizam' Callery Pear 'Pizzaz'
Callery Pear 'Redspire' Callery Pear 'Stonehill'
Callery Pear 'Whitehouse' Calliopsis (spp.)
Calliopsis 'Mardi Gras' Calva Crabapple
Camel Thorn 'Camelot' Rose
'Cameo Mix' Dwarf Columbine 'Can Can' Alumroot: Heuchera
Canada Buffaloberry Canada Lily
Canada Serviceberry (spp.) Canadian Bunchberry
Canadian Hemlock (spp.) Canadian Hemlock 'Coles Prostrate'
Canadian Hemlock 'Frosty' Canadian Hemlock 'Lewisii'
Canadian Hemlock 'Macrophylla' Canadian Hemlock 'Sargentii'
Canadian Hemlock Weeping Canadian Lily
'Canaertii' Eastern Red Cedar 'Canary' American Holly
'Can-can' Rose 'Candelabra™' Rose
Candle Berry Candle Larkspur (spp.)
Candle Larkspur 'Blushing Brides' Candle Larkspur 'Innocence'
Candle Larkspur 'Magic Fountains' Candle Larkspur 'New Millennium Mix'
Candle Larkspur 'Royal Aspirations' Candle, Desert (spp.)
Candle, Desert 'Bright Edge' Candle, Desert 'Color Guard'
Candle, Desert 'Golden Sword' Candle, Desert Variegated
Candleberry Candy Barrel Cactus
Candy Corn Plant Canna, Water
Canoe Birch: papyrifera Canyon Delphinum 'Laurin'
Canyon Hackberry Canyon Larkspur 'Laurin'
'Canyon Pink' Alumroot: Heuchera 'Cape Cod' American Holly
'Capital' Callery Pear 'Cappuccino' Alumroot: Heuchera
'Caprician Fiesia' Daylily 'Caramba' Scarlet Sage: splendens
Cardinal Flower 'Bee's Flame' Cardinal Flower 'Fan Deep Red'
Cardinal Flower 'Gladys Lindley' Cardinal Flower 'La Fresco'
Cardinal Flower 'Monet Moment' Cardinal Flower 'Rose Beacon'
Cardinal Flower 'Sparkle Devine' Cardinal Flower 'Summit Snow'
Cardinal Flower 'Tania' Cardinal Flower 'Wildwood Splendor'
Cardinal Flower, Blue (spp.) Cardinal Flower: cardinalis
'Carefree Sunshine' Rose 'Carey Quinn' Daylily
Carolina Ash Carolina Beech
Carolina Buckthorn (spp.) Carolina Buckthorn 'Emerald Charm™'
Carolina Buckthorn: carolinianus Carolina Desert Thorn
Carolina Hemlock Carolina Jasmine
Carolina Laurel Cherry (spp.) Carolina Laurel Cherry 'Compacta'
Carolina Silverbell (spp.) Carolina Wolfberry
'Carolyn Criswell' Daylily 'Carousel' Mountain Laurel
Carrot Weed 'Cascade' Possum Haw Holly
Cassie, Roman Cassine Holly
'Castle Spire®' Meserve Holly