Cordyline fruticosa
Ti Plant
Cornus capitata
Bentham's Dogwood
Cornus sanguinea
Dogwood
Corylus avellana
Hazel
Costus guanaiensis
Spiral Ginger
Costus pictus
Painted Spiral Ginger
Cotoneaster cambricus
Wild Cotoneaster
Cotoneaster horizontalis
Wall Cotoneaster
Cotoneaster melanocarpus
Cotoneaster tomentosus
Cotoneaster (tomentosus)
Couroupita guianensis
Cannonball tree
Crassula helmsii
New Zealand Pigmyweed
Crataegus laevigata
Midland Hawthorn
Crepis capillaris
Smooth Hawk's-beard
Crossandra infundibuliformis
Firecracker Flower
Cruciata laevipes
Crosswort
Cryptogramma crispa
Parsley Fern
Cryptomeria japonica
Japanese Red-cedar
Ctenanthe setosa
Never Never Plant
Cuphea carthagenensis
Colombian Waxweed
Cuphea hyssopifolia
False Heather
Cupressus nootkatensis
Nootka Cypress
Cupressus x leylandii
Leyland Cypress
Cycas revoluta
Sago Palm