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Scientific Name Common Name(s) Plant Category Image
Cliftonia monophylla Buckwheat tree, Titi Native Plants, Shrubs, Trees
Clintonia borealis Bluebead lily, Clinton's lily, Clintonia, Corn-lily, bluebead-lily Poisonous Plants, Wildflowers
Clintonia umbellulata Clinton's lily, Speckled wood lily, White clintonia Wildflowers
Clitoria mariana Butterfly pea Perennials, Vines, Wildflowers
Clitoria ternatea Blue pea, Butterfly pea Vines
Clivia Bush lily, Flame lily, Kaffir lily Summer Bulbs
Clivia miniata Clivia, Flame Lily, Kaffir Lily, September Lily Perennial Bulbs, Poisonous Plants
Cnidoscolus stimulosus Spurge nettle Poisonous Plants
Cobaena scandens Cathedral bells, Coral bells, Cup-and-saucer vine, Monastery bells Vines
Cocculus carolina Carolina moonseed, Coral-beads Native Plants, Vines
Codiaeum variegatum Croton Poisonous Plants
Coffea arabica Arabian coffee, Coffee plant Edible Plants, Shrubs, Trees
Coix lacryma-jobi Job's tears Ornamental Grass
Colchicum Autumn crocus, Meadow saffron, Mysteria, Wonder bulb Poisonous Plants, Summer Bulbs
Colchicum autumnale Fall Crocuses, Mysteria, Wonder Bulb Perennial Bulbs, Poisonous Plants
Colchicum spp. Autumn crocus, meadow saffron, naked ladies Poisonous Plants
Coleus pumilus Trailing coleus Annuals
Coleus x hybridus Coleus Annuals
Colocasia esculenta Elephant ears, Green taro Poisonous Plants, Water Garden
Colocasia spp. Dasheen, Elephant's-ear, Taro Annuals, Poisonous Plants
Colutea arborescens Common bladder senna Shrubs
Commelina communis Common dayflower, Dayflower Perennials, Wildflowers
Conium maculatum Poison hemlock, poison fool's parsley Poisonous Plants
Conoclinium coelestinum Blue boneset, Blue mist flower, Hardy ageratum Native Plants, Perennials, Wildflowers
Conopholis americana Cancer corn, Squaw root Wildflowers
Conradina verticillata Cumberland rosemary Native Plants, Shrubs
Convallaria majalis Lily of the Valley, Lily-of-the-valley Perennial Bulbs, Poisonous Plants, Spring Bulbs
Convallarina montana Lily of the valley Wildflowers
Convolulus tricolor Dwarf morning glory Annuals
Convolvulus arvensis Field bindweed, Small bindweed Wildflowers
Conyza canadensis (L.) Horse weed, Horseweed, Marestail Annuals, Herbs
Corallorrhiza maculata Spotted coralroot Wildflowers
Cordyline terminalis Ti plant Shrubs
Coreopsis lanceolata Lanceleaf coreopsis Perennials
Coreopsis major Greater tickseed, Wood tickseed Wildflowers
Coreopsis tinctoria Garden coreopsis, Golden coreopsis, Tick-seed Annuals, Wildflowers
Coreopsis tripteris Tall coreopsis, Tall tickseed Wildflowers
Coreopsis verticillata Threadleaf coreopsis, Whorled coreopsis Perennials, Wildflowers
Coriandrum sativum Coriander (cilantro) Edible Plants, Herbs
Cornus 'NCCH1' PP26,542 Little Ruby™ Dogwood Shrubs, Trees
Cornus alba Tatarian dogwood Shrubs
Cornus alba 'Argenteo-marginata' Variegated tartarian dogwood Shrubs
Cornus alternifolia Alternate-leaved dogwood, Pagoda dogwood Native Plants, Trees
Cornus amomum Silky dogwood Native Plants, Shrubs, Trees
Cornus canadensis Bunchberry Groundcover, Native Plants, Wildflowers
Cornus controversa Giant dogwood Trees
Cornus florida Flowering dogwood Native Plants, Trees
Cornus hybrids Dogwood, Stellar hybrids Trees
Cornus kousa Kousa dogwood Trees
Cornus mas Cornelian cherry dogwood Trees