'Cadillac' Hosta 'Caesar's Brother' Siberian Iris
Caladium, Fancy Leaved (spp.) Caladium, Fancy Leaved 'Candidum'
Caladium, Fancy Leaved 'F.M. Joyner' Caladium, Fancy Leaved 'Rosebud'
Calamint, Large Flowered (spp.) Calamint, Large Flowered Variegated
Calamint, Lesser 'White Cloud' Calandrinia
Calathea Calibrachoa 'Colorful Expressions™ Cherry Rose'
Calibrachoa 'Colorful Expressions™ Cranberry' Calibrachoa 'Colorful Expressions™ Rose'
Calibrachoa 'Colorful Expressions™ Scarlet Red' Calibrachoa 'Million Bells®Cherry Pink'
Calibrachoa 'Spring Fling Rose Improved' Calibrachoa 'Starlette Trailing Pink'
Calibrachoa 'Superbells® Cherry Red' Calibrachoa 'Superbells® Pink'
Calibrachoa 'Superbells® Red' Calibrachoa 'Superbells® Tequila Sunrise'
Calibrachoa 'Superbells® White' Calico Aster 'Lady in Black'
Calico Aster 'Prince' 'Calico' French Marigold
Calico Plant 'Party Time' Calico Plant 'Rubiginosa'
Calico Plant 'Ruby' California Bluebell
California Blue-eyed Grass (spp.) California Blue-eyed Grass 'Rocky Point'
California Fuchsia (spp.) California Godfields
California Pitcher Plant California Poppy (spp.)
California Poppy 'Ballerina' California Poppy 'Thai Silk'
California Poppy White California Sunlight (spp.)
California Sunlight 'Ballerina' California Sunlight 'Thai Silk'
California Sunlight White California Tree Poppy
California Tree Poppy: coulteri 'Calimero Purple Vein' Garden Petunia
'Calimero Rose' Garden Petunia Calliopsis (spp.)
Calliopsis 'Mahogany Midget' Calliopsis 'Mardi Gras'
Camas, Blue White Camas, Giant Blue 'Coerulea'
Camash, Common White 'Cambodian Queen' Hardy Chrysanthemum
'Cambridge Blue' Gentian Sage Cambridge Geranium (spp.)
Cambridge Geranium 'Biokovo' Cambridge Geranium 'Biokovo Karmina'
'Cameo Cascade' Tall Bearded German Iris 'Cameo Mix' Dwarf Columbine
'Cameo Pink-White' Dwarf Columbine 'Camilla' Spotted Dumbcane
'Camp Bule(Starina™Bedding Bell)' Bellflower: Campanula 'Camp Bulewhit(Starina™BicolorStar)' Bellflower: Campanula
'Camp Inbule(Starina™Blue Star)' Bellflower: Campanula 'Camp Whit(Starina™White Star)' Bellflower: Campanula
'Campfire' Crassula Campion 'Electra'
Campion 'Nana Peggy' Campion, Arkwright's 'Orange Gnome'
Campion, Arkwright's 'Vesuvius' Campion, Bladder (spp.)
Campion, Bladder 'Druett's Variegated' Campion, Fringed
Campion, Rose (spp.) Campion, Rose 'Dancing Ladies'
Campion, Rose 'Gardener's World' Campion, Sea (spp.)
Campion, Sea 'Druett's Variegated' Campion, White
'Can Can' Alumroot: Heuchera Canada Anemone
Canada Lily Canada Wild Ginger
Canadian Bunchberry Canadian Lily
Canadian Thistle Canary Creeper
Canary Island Marguerite (spp.) Canary Island Spurge
Cancer Weed 'Burgundy Bliss' Cancer Weed 'Purple Knockout'