Perennials: Cott - Cram (44)
Cottage Pink (spp.)
Cottage Pink 'Ideal Violet'
Cottage Pink 'Vanilla'
'Cotton Candy' Astilbe
'Cotton Candy' Moss Phlox
'Cotton Cool' Lungwort: hybrid
Cotton Lavender (spp.)
Cotton Lavender Dwarf
Cotton Lavender Golden
Cotton Lavender 'Lavender Cotton'
Cotton Lavender 'Lemon Queen'
'Cotton Tail' Sea Thrift
Cotton, Wild (spp.)
Cotton, Wild 'Disco'
Cotton, Wild 'Luna Red'
Cotton, Wild 'Rio Grande'
Cotton, Wild 'Southern Belle'
Cotton, Wild 'Wrapped Up'
Cottonheads, Grey
Cotyledon
Couch 'Austrailia'
Couch 'Santa Ana'
'Couleur Cardinal' Hybrid Tulip
Country Borage (spp.)
'Court Troubador' Daylily
Cow Horn
Cow Horn Agave
Cowboy Primrose
'Cowichan' Primrose: hybrid
Cowslip
Cowslip Lungwort (spp.)
Cowslip, Common (spp.)
Cowslip, Giant (spp.)
Cowslip, Giant 'Ceperly Hybrid'
Cowslip, Jerusalem 'Sissinghurst White'
Cowslip, Meadow (spp.)
Cowslip, Tibetan (spp.)
Cowslip, Tibetan 'Ceperly Hybrid'
Crab Cactus
'Cracker Jack' Moss Phlox
Cradle Orchid
'Cragg Barber Eye' Mugwort: vulgaris
'Cragmoor Sweetheart' Daylily
'Cramer's Amazon' Red Fox