Cradle Orchid 'Cragmoor Sweetheart' Daylily
Cranberry Cranberry Cotoneaster
Cranberry, Highbush (spp.) Cranberry, Highbush 'Wentworth'
Cranberrybush (spp.) Cranberrybush 'Wentworth'
Creashak (spp.) Creashak 'Massachusetts'
Creashak 'Microphylla' Creashak 'Point Reyes'
Creashak 'Radiant' 'Credo' Fernleaf Yarrow
Creeping Barberry Creeping Cotoneaster
Creeping Fig Creeping Mahonia
Creeping Phlox: subulata 'Emerald Blue' Creeping Saltbush
Creeping Snapdragon 'Jewels' Creme Brulee Agave
'Creme de Cassis' Hollyhock 'Creme de Menthe' Summer Phlox
Crepe Ginger (spp.) Crimson Bells 'June Bride'
Crimson Bells 'Silver Veil' Crimson Bells 'Windfield Pink'
Crimson Bottlebrush (spp.) 'Crimson Bouquet' Rose
'Crimson Curls' Alumroot: Heuchera Crossvine (spp.)
Crowfoot, European 'Grandmother's Garden' Crowfoot, Water
'Crown Jewel' Alumroot: Heuchera 'Crystal Blue' Tall Bearded German Iris
Cup Plant Cuphea, Red
'Cupressifolia' Eastern Red Cedar 'Curly Leaf' Waxleaf Privet
Currant, Buffalo Currant, Catalina
Currant, Evergreen Currant, Golden
Currant, Missouri 'Cut Leaf' Black Elderberry
Cutleaf Coneflower (spp.) Cutleaf Coneflower 'Goldquelle'
Cutleaf Crabapple (spp.) Cutleaf Crabapple 'Golden Raindrops®'
'Cynthia' Rose Cypress, Bald (spp.)
Cypress, Bald 'Monarch of Illinois' Cypress, Bald Weeping
Cypress, Common Bald (spp.) Cypress, Common Bald 'Monarch of Illinois'
Cypress, Common Bald Weeping Cypress, Montezuma Bald
Cypress, Pond (spp.) Cypress, Pond 'Morris (Debonair)'
Cypress, Pond 'Prairie Sentinel' Cypress, White (spp.)
Cypress, White 'Andelyensis' Cypress, White 'Ericoides'
Cypress, White 'Heatherbun' Cypress: mucronatum, Mexican
'D.D. Blanchard' Southern Magnolia Dahlia, Sea
Dahoon Holly Dahoon, Myrtle
Daisy, Maximillian 'Dallas Blues' Switch Grass
'Danica' American Arborvitae Daphne, February
'Dark Green' American Arborvitae Date, Chinese (spp.)
Date, Chinese 'Mu' Datura, Red
'David' Flowering Crabapple 'David' Summer Phlox
'Dawn Chorus' Rose