Couesii Century Plant
Coulter or Bigcone Pine
Crape Myrtle
Cream Bush, Ocean Spray
Creeping Fig
Creeping Jenny, Moneywort
Creeping Mahonia
Creeping Mirror Plant
Creeping Red Fescue, Red Fescuegras
Creeping St. Johnswort, Aaron's Bea
Crested Celosia
Crimson King Maple
Crimson Pygmy Japanese Barberry
Crimson Queen Japanese Maple
Crimson-Spot Rockrose
Crinodonna Lily
Curly Top or Leather Leaf Sedge
Cushion Butterfly Bush
Cushion Crimson Rockrose
Cushion Dusty Miller, Silver Ground