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Scientific Name Common Name(s) Plant Category Image
Brugmansia x candida Yellow angel's trumpet Annuals, Poisonous Plants
Bulbocodium vernum Spring meadow saffron Poisonous Plants
Buxus microphylla var. japonica Japanese boxwood Poisonous Plants
Buxus sempervirens Boxwood, Common boxwood Poisonous Plants, Shrubs
Caesalpinia spp. Bird-of-paradise, dwarf poinciana, pride of Barbados Poisonous Plants
Caladium bicolor; Caladium x hortulanum Caladium Annuals, Poisonous Plants
Caladium spp. Angel wings, Caladium, Elephant's ear Poisonous Plants, Summer Bulbs
Calla palustris Water arum, water-dragon, wild calla Poisonous Plants
Caltha palustris Marsh marigold Native Plants, Perennials, Poisonous Plants, Wildflowers
Calycanthus floridus Carolina allspice, Spicebush, Sweet Betsy, Sweet shrub, Sweetshrub, sweet bubby bush Native Plants, Poisonous Plants, Shrubs
Campsis radicans Cow-itch, Trumpet creeper, Trumpet vine Native Plants, Poisonous Plants, Vines
Cannabis sativa Marijuana, hashish, hemp, marihuana, pot Poisonous Plants
Capsicum annuum (Longum group) Hot pepper, chili pepper Poisonous Plants
Caryota mitis Fishtail palm Poisonous Plants
Cassia fasciculata (Chamaecrista fasciculata) Partridge pea Annuals, Poisonous Plants, Wildflowers
Cassia obtusifolia (Senna obtusifolia) Sicklepod Poisonous Plants
Cassia occidentalis (Senna occidentalis) Coffee senna, coffeeweed Poisonous Plants
Catharanthus roseus Madagascar periwinkle, Periwinkle, Vinca Annuals, Poisonous Plants
Caulophyllum thalictroides Blue cohosh Poisonous Plants
Celastrus scandens American bittersweet, Bittersweet, Climbing bittersweet Native Plants, Poisonous Plants, Vines
Cestrum spp. Jessamine, cestrum, night blooming jessamine Poisonous Plants
Chelidonium majus Celandine, rock-poppy Poisonous Plants
Chenopodium ambrosioides Mexican tea, wormseed Poisonous Plants
Chlorophyllum molybdites Green Gill, Green-Spored Parasol Poisonous Plants
Chrysanthemum X morifolium (Dendranthema X grandiflorum) Garden chrysanthemum, mum Poisonous Plants
Cicuta maculata Water hemlock, spotted cowbane, spotted water hemlock Poisonous Plants, Wildflowers
Clematis armandii Armand clematis, Evergreen clematis Poisonous Plants, Vines
Clematis crispa Curly clematis Poisonous Plants, Vines
Clematis hybrida Clematis, Hybrids Poisonous Plants, Vines
Clematis montana Anemone clematis, Indian's virgin's bower Poisonous Plants, Vines
Clematis paniculata Sweet autumn clematis Poisonous Plants, Vines
Clematis recta Clematis Poisonous Plants, Vines
Clematis spp. Clematis, Leather flower, virgin's bower Perennials, Poisonous Plants, Vines, Wildflowers
Clematis tangutica Golden clematis, Old man's beard clematis Poisonous Plants, Vines
Clematis texensis Scarlet clematis Poisonous Plants, Vines
Clematis viorna Leather flower Native Plants, Poisonous Plants, Vines
Clematis virginiana Italian clematis, Virgin's bower Native Plants, Poisonous Plants, Vines
Clematis viticella Italian clematis Poisonous Plants, Vines
Clematis x jackmanii Jackman clematis Poisonous Plants, Vines
Clintonia borealis Bluebead lily, Clinton's lily, Clintonia, Corn-lily, bluebead-lily Poisonous Plants, Wildflowers
Clivia miniata Clivia, Flame Lily, Kaffir Lily, September Lily Perennial Bulbs, Poisonous Plants
Cnidoscolus stimulosus Spurge nettle Poisonous Plants
Codiaeum variegatum Croton, Mammy Croton Poisonous Plants
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
Colocasia esculenta Elephant ears, Green taro Poisonous Plants, Water Garden
Colocasia spp. Dasheen, Elephant's-ear, Taro Annuals, Poisonous Plants
Conium maculatum Poison hemlock, poison fool's parsley Poisonous Plants
Convallaria majalis Lily of the Valley, Lily-of-the-valley Perennial Bulbs, Poisonous Plants, Spring Bulbs