Clove Pink (spp.) Clover, Dutch (spp.)
Clover, Dutch 'Atropurpureum' Clover, Dutch 'Wheatfen'
Clover, Indoor 'Party Time' Clover, Indoor 'Rubiginosa'
Clover, Indoor 'Ruby' Clover, Lucky
Clover, Purple Dutch (spp.) Clover, Purple Dutch 'Atropurpureum'
Clover, Purple Dutch 'Wheatfen' Clover, Purple Prairie
Clover, White (spp.) Clover, White 'Atropurpureum'
Clover, White 'Wheatfen' Club Moss
Clubhair Mariposa Lily Clump Verbena 'Rosea'
Clumpfoot Cabbage Clumping Foamflower (spp.)
Clumping Foamflower 'Brandywine' Clumping Foamflower 'Dark Eyes'
Clumping Foamflower 'Ink Blot' Clumping Foamflower 'Oakleaf'
Clumping Foamflower 'Pink Bouquet' Clumping Foamflower 'Running Tapestry'
Clumping Foamflower 'Winterglow' Clustered Bellflower (spp.)
Clustered Bellflower 'Joan Elliott' Clustered Bellflower 'Superba'
'Clyde Redmond' Louisiana Iris Coast Aloe
Coast Prickly Pear Coastal Agave
Coastal Century Plant Coastal Cholla
Coastal Flax (spp.) Coastal Flax 'Apricot Queen'
Coastal Flax 'Dazzler' Coastal Flax 'Pink Stripe'
Coastal Flax 'Purpureum' Coastal Flax 'Rainbow Sunrise (Maori Queen)'
Coastal Flax 'Surfer' Coastal Prickly Pear Cactus
Coastal Strand Wormwood (spp.) Coastal Strand Wormwood 'David's Choice'
Coat Flower 'Cobalt Blue' Japanese Water Iris
Cobbitty Daisy (spp.) Cobbitty Daisy 'Molimba® Pink'
Cobbitty Daisy 'Vanilla Butterfly®' 'Cobra' Common Torch Lily: Kniphofia
Cobra Jack Cobra Lily
Cobra Lily: californica Cobweb Hen and Chicks
Cobweb Houseleek (spp.) Cobweb Houseleek 'Red Cobweb'
Cobweb Houseleek: arachnoideum tomentosum Cobweb Spiderwort
'Coccineus' Creeping Thyme 'Coccineus' Jupiter's Beard
'Coccineus' Wild Thyme Cocklebur: repens
Cockscomb, Green 'Coconut' Geranium: Pelargonium
'Coerulea' Giant Blue Camas Coin Leaf Peperomia
'Colchester' Japanese Water Iris Colchicum, Showy (spp.)
Colchicum, Showy 'The Giant' Coleus (spp.)
Coleus 'ColorBlaze® Dipt in Wine' Coleus 'Gay's Delight'
Coleus 'India Frills' Coleus 'Kong Rose'
Coleus 'Mars' Coleus 'Micawpy'
Coleus 'Victoria Ruffles' Coleus 'Wizard™ Golden'
Coleus 'Wizard™ Jade' Coleus 'Wizard™ Mix'
Coleus, Flowering Bush Coleus: hybrid 'Pineapple Queen'
Colewort: cordifolia 'Color Glory' Hosta
'Color Guard' Adam's Needle Yucca 'Colorado Gold' Gazania
'ColorBlaze® Dipt in Wine' Coleus 'Colorcade Lavender' Ivy Geranium
'Colorful Expressions™ Cherry Rose' Trailing Petunia 'Colorful Expressions™ Cranberry' Trailing Petunia
'Colorful Expressions™ Rose' Trailing Petunia 'Colorful Expressions™ Scarlet Red' Trailing Petunia
'Colorpower Purple Flame' New Guinea Impatiens 'Colrain Red' Bee Balm: Monarda
Coltsfoot