Cockspur Coral Tree, Ceibo
Coleus
Collingwood Ingram Rosemary
Colorado Blue Spruce
Colorado Spruce
Columbine
Columnar Norway Maple
Common Blue Fescue, Blue Fescuegras
Common Edible Fig
Common Flannel Bush
Common Garden Canna
Common Garden Petunia
Common Hackberry
Common Heliotrope
Common Juniper
Common Lilac
Common Morning Glory
Common Pansy
Common Sunflower
Common Trumpet Creeper
