A helpful list of toxic plants for horses, which I have always found to be helpful. Manyt landscaping plants are very toxic to horses.
Toxic and Non-Toxic Plant List - Horses
Plants Toxic to Horses
Adam-and-Eve (Arum, Lord-and-Ladies, Wake Robin, Starch Root, Bobbins, Cuckoo Plant)
Scientific Name: Arum maculatum
Family: Araceae
African Wonder Tree
Scientific Name: Ricinus communis
Family:
Alocasia (Elephant's Ear)
Scientific Name: Alocasia spp.
Family: Araceae
Alsike Clover
Scientific Name: Trifolium hybridum
Family: Leguminosae
Ambrosia Mexicana (Jerusalem Oak, Feather Geranium)
Scientific Name: Chenopodium botrys (Ambrosia mexicana )
Family: Chenopodiaceae
American Bittersweet (Bittersweet, Waxwork, Shrubby Bittersweet, False Bittersweet, Climbing Bittersweet)
Scientific Name: Celastrus scandens
Family: Celastraceae
American Holly (English Holly, European Holly, Oregon Holly, Inkberry, Winterberry)
Scientific Name: Ilex opaca
Family: Aquifoliaceae
American Mandrake (Mayapple, Indian Apple Root, Umbrella Leaf, Wild Lemon, Hog Apple, Duck's Foot, Raccoonberry)
Scientific Name: Podophyllum peltatum
Family: Berberidaceae
American Yew
Scientific Name: Taxus canidensus
Family: Taxaceae
Angelica Tree (Hercules' Club, Devil's Walking Stick, Prickly Ash, Prickly Elder)
Scientific Name: Aralia spinosa
Family: Araliaceae
Apple (Includes crabapples)
Scientific Name: Malus sylvestrus (other Malus species)
Family: Rosaceae
Apricot (Group also includes Plum, Peach, Cherry)
Scientific Name: Prunus armeniaca (other Prunus species)
Family: Rosaceae
Arum (Cuckoo-pint, Lord-and-Ladies, Adam-and-Eve, Starch Root, Bobbins, Wake Robin)
Scientific Name: Arum maculatum
Family: Araceae
Autumn Crocus (Meadow Saffron)
Scientific Name: Colchicum autumnale
Family: Liliaceae
Avocado (Alligator Pear)
Scientific Name: Persea americana
Family: Lauraceae
Azalea (Rosebay, Rhododendron)
Scientific Name: Rhododendron spp
Family: Ericaceae
Barnaby's Thistle (Yellow Star Thistle)
Scientific Name: Centaurea solstitialis
Family: Compositae
Bead Tree (China Ball Tree, Paradise Tree, Persian Lilac, White Cedar, Japanese Bead Tree, Texas Umbrella Tree, Pride-of-India, Chinaberry Tree )
Scientific Name: Melia azedarach
Family: Meliaceae
Bergamot Orange (Bergamot, Citrus bergamia )
Scientific Name: Citrus Aurantium
Family: Rutaceae
Bird of Paradise Flower (Crane Flower, Bird's Tongue Flower)
Scientific Name: Strelitzia reginae
Family: Strelitziaceae
Bird's Tongue Flower (Bird of Paradise Flower, Crane Flower )
Scientific Name: Strelitzia reginae
Family: Strelitziaceae
Bishop’s Weed (Greater Ammi, False Queen Anne's Lace )
Scientific Name: Ammi majus
Family: Apiaceae
Bitter Root (Dogbane Hemp, Indian Hemp )
Scientific Name: Apocynum androsaemifolium
Family: Apocynaceae
Black Calla (Solomon's Lily, Wild Calla, Wild Arum )
Scientific Name: Arum palestinum
Family: Araceae
Black Laurel (Dog Hobble, Dog Laurel, Fetter Bush, Sierra Laurel )
Scientific Name: Leucothoe davisiae
Family: Ericaceae
Black Nightshade (Nightshade, Deadly Nightshade )
Scientific Name: Solanum nigrum
Family: Solanaceae
Black Walnut
Scientific Name: Juglans nigra
Family: Juglandaceae
Blackjack Pine (Ponderosa Pine, Western Yellow Pine, Yellow Pine, Bull Pine )
Scientific Name: Pinus ponderosa
Family: Pinaceae
Bobbins (Arum, Lord-and-Ladies, Adam-and-Eve, Starch Root, Wake Robin, Cuckoo Plant)
Scientific Name: Arum maculatum
Family: Araceae
Bog Laurel (Pale Laurel, Bog Kalmia)
Scientific Name: Kalmia poliifolia
Family: Ericaceae
Bracken Fern (Brake Fern, Umbewe, Brake, Pasture Bracken, Hog-Pasture Bracken, Eagle fern, Umhlashoshana, Adelaarsvaring)
Scientific Name: Pteridium aquilinum
Family: Polypodiaceae
Brake Fern (Braken Fern, Umbewe, Brake, Pasture Bracken, Hog-Pasture Bracken, Eagle fern, Umhlashoshana, Adelaarsvaring)
Scientific Name: Pteridium aquilinum
Family: Polypodiaceae
Branching Ivy (English Ivy, Glacier Ivy, Needlepoint Ivy, Sweetheart Ivy, California Ivy )
Scientific Name: Hedera helix
Family: Araliaceae
Bread and Butter Plant (Indian Borage, Spanish Thyme, Coleus, Maratha, Militini, East Indian Thyme )
Scientific Name: Coleus ampoinicus
Family: Labiatae
Brunfelsia (Yesterday, Today, Tomorrow, Kiss-Me-Quick, Lady-of-the-Night, Fransiscan Rain Tree)
Scientific Name: Brunfelsia species
Family: Solanaceae
Buckeye (Horse Chestnut )
Scientific Name: Aesculus spp
Family: Hippocastanaceae
Buckwheat
Scientific Name: Fagopyrum species
Family: Polygonaceae
Buddhist Pine (Yew Pine, Japanese Yew, Southern Yew, Podocarpus)
Scientific Name: Podocarpus macrophylla
Family: Podocarpaceae
Bull Pine (Ponderosa Pine, Western Yellow Pine, Yellow Pine, Blackjack Pine)
Scientific Name: Pinus ponderosa
Family: Pinaceae
Burning Bush (Wahoo, Spindle Tree )
Scientific Name: Euonymus atropurpurea (Euonymus occidentalis)
Family: Celastraceae
Buttercup (Butter Cress, Figwort )
Scientific Name: Ranunculus sp.
Family: Ranunculaceae
Calamondin Orange
Scientific Name: Citrus mitis
Family: Rutaceae
Cape Jasmine (Gardenia )
Scientific Name: Gardenia jasminoides
Family: Rubiaceae
Cardboard Palm (cycads and zamias)
Scientific Name: Zamia furfuracea
Family: Cycadaceae
Cardinal Flower (Lobelia, Indian Pink )
Scientific Name: Lobelia cardinalis
Family: Campanulaceae
Carolina Maple (Swamp Maple, Scarlet Maple, Red Maple, Curled Maple, Acer Sanguineum, Soft Maple, Rufacer Rubrum )
Scientific Name: Acer rubrum
Family: Aceraceae
Castor Bean Plant (Castor Oil Plant, Mole Bean Plant, African Wonder Tree, Castor Bean )
Scientific Name: Ricinus communis
Family: Euphorbiaceae
Chamomile (Manzanilla, Garden Chamomile, Roman Chamomile, True Chamomile, Corn Feverfew, Barnyard Daisy, Ground-apple, Turkey-weed )
Scientific Name: Anthemis nobilis
Family: Compositae
Charlock (Wild Mustard, California Rape)
Scientific Name: Brassica kaber
Family: Cruciferae
Cherry
Scientific Name: Prunus species
Family: Rosaceae
Chinaberry Tree (Bead Tree, China Ball Tree, Paradise Tree, Persian Lilac, White Cedar, Japanese Bead Tree, Texas Umbrella Tree, Pride-of-India)
Scientific Name: Melia azedarach
Family: Meliaceae
Chinese Evergreen
Scientific Name: Aglaonema modestrum
Family: Araceae
Christmas Rose (Hellebore, Lenten Rose, Easter Rose )
Scientific Name: Helleborus niger
Family: Ranunculaceae
Chrysanthemum (Daisy, Mum; many varieties )
Scientific Name: Chrysanthemum spp.
Family: Compositae
Clematis (Virgin’s Bower, Leatherflower )
Scientific Name: Clematis sp.
Family: Ranunculaceae
Climbing Bittersweet (Bittersweet, Waxwork, Shrubby Bittersweet, False Bittersweet, Climbing Bittersweet, American Bittersweet)
Scientific Name: Celastrus scandens
Family: Celastraceae
Climbing Nightshade (European Bittersweet, Deadly Nightshade, Violet Bloom, Blue Nightshade, Soda Apple, Poisonous Nightshade, Felonwort, Devil's Apple, Scarlet Berry, Woody Nightshade, Blue Blindweed )
Scientific Name: Solanum dulcamara
Family: Solanaceae
Coffee Tree (Wild Coffee, Geranium-Leaf Aralia )
Scientific Name: Polyscias guilfoyei (Aralia guilfoyei)
Family: Araliaceae
Coffee Tree 2 (Wild Coffee, Geranium-Leaf Aralia )
Scientific Name: Aralia guilfoyei (Polyscias guilfoyei)
Family: Araliaceae
Coleus (Indian Borage, Bread and Butter Plant, Spanish Thyme, East Indian Thyme, Stinging Thyme, Country Boarage; many others )
Scientific Name: Coleus ampoinicus
Family: Labiatae
Common Privet (Privet, Amur, Wax-leaf )
Scientific Name: Ligustrum vulgare
Family: Oleaceae
Coontie Palm (Sago Palm, Cardboard Palm, cycads and zamias)
Scientific Name: Zamia pumila
Family: Cycadaceae
Cow parsnip (Giant Hogweed )
Scientific Name: Heracleum maximum
Family: Apiaceae
Cowbane (Water Hemlock, Poison Parsnip )
Scientific Name: Cicuta species
Family: Apiaceae
Cuckoo-pint (Arum, Lord-and-Ladies, Adam-and-Eve, Starch Root, Bobbins, Wake Robin)
Scientific Name: Arum maculatum
Family: Araceae
Cycads (Sago Palm, Fern Palm )
Scientific Name: Cycas and Zamia species
Family: Cycadaceae
Daffodil (Narcissus, Jonquil, Paper White )
Scientific Name: Narcissus spp
Family: Amaryllidaceae
Deadly Nightshade (Nightshade, Black Nightshade, European Bittersweet, Climbing Nightshade )
Scientific Name: Solanum spp
Family: Solanaceae
Desert Azalea (Desert Rose, Mock Azalea, Sabi Star, Impala Lily, Kudu Lily )
Scientific Name: Adenium obesum
Family: Apocynaceae
Desert Rose (Desert Azalea, Mock Azalea, Sabi Star, Impala Lily, Kudu Lily )
Scientific Name: Adenium obesum
Family: Apocynaceae
Dock (Sorrel )
Scientific Name: Rumex sp.
Family: Polygonaceae
Dog Daisy (Mayweed, Poison Daisy, Stinking Chamomile, Ground Apple, Dog Fennel, Chamomile )
Scientific Name: Anthemis
Family: Asteraceae
Dog Hobble (Dog Laurel, Fetter Bush, Black Laurel )
Scientific Name: Leucothoe sp.
Family: Ericaceae
Dogbane Hemp (Bitterroot, Indian Hemp )
Scientific Name: Apocynum
Family: Apocynaceae
Dwarf Poinciana (Barbados Pride, Peacock Flower)
Scientific Name: Caesalpinia pulcherrima
Family: Fabaceae
Easter Rose (Hellebore, Christmas Rose, Lenten Rose )
Scientific Name: Helleborus niger
Family: Ranunculaceae
Emerald Feather (Emerald Fern, Asparagus, Asparagus fern, Sprengeri fern, Plumosa fern, Lace fern, Racemose asparagus, Shatavari )
Scientific Name: Asparagus densiflorus
Family: Liliaceae
English Holly (European Holly, Oregon Holly, Inkberry, Winterberry, American Holly )
Scientific Name: Ilex aquifolium
Family: Aquifoliaceae
English Ivy (Branching Ivy, Glacier Ivy, Needlepoint Ivy, Sweetheart Ivy, California Ivy )
Scientific Name: Hedera helix
Family: Araliaceae
English Yew (Western Yew, Pacific Yew, Japanese Yew, Anglo-Japanese Yew )
Scientific Name: Taxus baccata
Family: Taxaceae
Eucalyptus (Many cultivars )
Scientific Name: Eucalyptus species
Family: Myrtaceae
European Bittersweet (Climbing Nightshade, Deadly Nightshade )
Scientific Name: Solanum dulcamara
Family: Solanaceae
European Holly (European Holly, Oregon Holly, Inkberry, Winterberry, American Holly, English Holly)
Scientific Name: Ilex aquifolium
Family: Aquifoliaceae
Everlasting Pea (Sweet Pea, Perennial Pea )
Scientific Name: Lathyrus latifolius
Family: Fabaceae
False Bittersweet (American Bittersweet)
Scientific Name: Celastrus scandens
Family: Celastraceae
False Queen Anne’s Lace (Bishop's Weed, Greater Ammi )
Scientific Name: Ammi majus
Family: Apiaceae
Fern Palm (Sago Palm, Cycads )
Scientific Name: Cycas species
Family: Cycadaceae
Fetter Bush (Dog Laurel, Dog Hobble, Black Laurel )
Scientific Name: Leucothoe sp.
Family: Ericaceae
Fetterbush (Staggerberry, Maleberry )
Scientific Name: Lyonia sp.
Family: Ericaceae
Fiddleneck
Scientific Name: Amsinckia species
Family: Boraginaceae
Field Horsetail (Scouring rush, Common horsetail, Western horsetail )
Scientific Name: Equisetum arvense
Family: Equisetaceae
Field Pennycress
Scientific Name: Thlaspi arvense
Family: Brassicaceae
Fig (Weeping Fig, Indian Rubber Plant )
Scientific Name: Ficus benjamina
Family: Moraceae
Figwort (Buttercup, Butter Cress, Burwort, Crowfoot burwort )
Scientific Name: Ranunculus acris
Family: Ranunculaceae
Fleabane (Showy Daisy, Horseweed, Seaside Daisy )
Scientific Name: Erigeron speciosus
Family: Asteraceae
Foxglove
Scientific Name: Digitalis purpurea
Family: Scrophalariaceae
Franciscan Rain Tree (Yesterday, Today, Tomorrow, Lady-of-the-Night, Morning-Noon-and-Night, Kiss-Me-Quick )
Scientific Name: Brunfelsia species
Family: Solanaceae
Gardenia (Cape Jasmine )
Scientific Name: Gardenia jasminoides
Family: Rubiaceae
Garlic (Stinking rose, Rustic treacle, Comphor of the poor, Nectar of the gods, Serpet garlic, Rocambole )
Scientific Name: Allium sativum
Family: Liliaceae
Geranium-Leaf Aralia (Wild Coffee, Coffee Tree)
Scientific Name: Polyscias guilfoyei (Aralia guilfoyei)
Family: Araliaceae
Giant Hogweed (Cow Parsnip)
Scientific Name: Heracleum maximum
Family: Apiaceae
Glacier Ivy (English Ivy, Branching Ivy, Needlepoint Ivy, Sweetheart Ivy, California Ivy )
Scientific Name: Hedera helix
Family: Araliaceae
Gladiola (Many cultivars )
Scientific Name: Gladiolus species
Family: Iridaceae
Gloriosa Lily (Glory Lily, Climbing Lily, Superb Lily )
Scientific Name: Gloriosa superba
Family: Liliaceae
Goatweed
Scientific Name: Hypericum perforatum
Family: Clusiaceae
Golden Ragwort (Ragwort)
Scientific Name: Senecio species
Family: Compositae
Good Luck Plant (Shamrock Plant, Sorrel )
Scientific Name: Oxalis spp.
Family:
Grapefruit
Scientific Name: Citrus paradisii
Family: Rutaceae
Greater Ammi (Bishop's Weed, False Queen Anne's Lace )
Scientific Name: Ammi majus
Family: Apiaceae
Ground Apple (Mayweed, Poison Daisy, Stinking Chamomile, Dog Daisy, Dog Fennel, Chamomile )
Scientific Name: Anthemis
Family: Asteraceae
Groundsel (Ragwort, Senecio )
Scientific Name: Senecio species
Family: Compositae
Hahn's Self Branching English Ivy (Branching Ivy, Glacier Ivy, Needlepoint Ivy, Sweetheart Ivy, California Ivy, English Ivy)
Scientific Name: Hedera helix
Family: Araliaceae
Hashish (Marijuana, Indian Hemp)
Scientific Name: Cannabis sativa
Family: Cannabaceae
Heavenly Bamboo (Sacred Bamboo, Nandina)
Scientific Name: Nandina domestica
Family: Berberidaceae
Heliotrope
Scientific Name: Heliotropium species
Family: Boraginaceae
Hellebore (Christmas Rose, Lenten Rose, Easter Rose )
Scientific Name: Helleborus niger
Family: Ranunculaceae
Hercules' Club (Angelica Tree, Devil's Walking Stick, Prickly Ash, Prickly Elder)
Scientific Name: Aralia spinosa
Family: Araliaceae
Hibiscus (Rose of Sharon, Rose of China)
Scientific Name: Hibiscus syriacus
Family: Malvaceae
Hills of Snow (Hydrangea, Hortensia, Seven Bark)
Scientific Name: Hydrangea arborescens
Family: Hydrangeaceae
Hoary Alyssum
Scientific Name: Berteroa incana
Family: Brassicaceae
Holly (English Holly, European Holly, Oregon Holly, Inkberry, Winterberry, American Holly)
Scientific Name: Ilex opaca
Family: Aquifoliaceae
Horse Chestnut (Buckeye)
Scientific Name: Aesculus glabra
Family: Hippocastanaceae
Horseweed (Showy Daisy, Fleabane, Seaside Daisy )
Scientific Name: Erigeron speciosus
Family: Asteraceae
Hortensia (Hydrangea, Hills of Snow, Seven Bark)
Scientific Name: Hydrangea arborescens
Family: Hydrangeaceae
Hosta (Plantain Lily, Funkia)
Scientific Name: Hosta plataginea
Family: Liliaceae
Hound's Tongue
Scientific Name: Cynoglossum amabile (Cynoglossum officinale)
Family: Boraginaceae
Hyacinth
Scientific Name: Hyacinthus oreintalis
Family: Liliaceae
Indian Apple (Mayapple, Indian Apple Root, Umbrella Leaf, Wild Lemon, Hog Apple, Duck's Foot, Raccoonberry, American Mandrake)
Scientific Name: Podophyllum peltatum
Family: Berberidaceae
Indian Borage (Bread and Butter Plant, Spanish Thyme, Coleus, Maratha, Militini, East Indian Thyme )
Scientific Name: Coleus ampoinicus
Family: Labiatae
Indian Hemp (Dogbane Hemp, Bitter Root )
Scientific Name: Apocynum androsaemifolium
Family: Apocynaceae
Indian Hemp (Marijuana, Hashish)
Scientific Name: Cannabis sativa
Family: Cannabaceae
Indian Pink (Lobelia, Cardinal Flower)
Scientific Name: Lobelia cardinalis
Family: Campanulaceae
Inkberry (English Holly, European Holly, Oregon Holly, American Holly, Winterberry)
Scientific Name: Ilex opaca
Family: Aquifoliaceae
Jack-in-the-pulpit (Three-leaved indian turnip, Devil's dear, Wake robin, Starch wort, Wild turnip, Dragon root, Bog onion, Pepper turnip, Brown dragon, Memory root)
Scientific Name: Arisaema triphyllum
Family: Araceae
Japanese Yew (English Yew, Western Yew, Pacific Yew, Anglo-Japanese Yew )
Scientific Name: Taxus sp.
Family: Taxaceae
Jerusalem Cherry (Natal cherry, Winter cherry )
Scientific Name: Solanum pseudocapsicum
Family: Solanaceae
Jimmy Weed (Burrow Weed )
Scientific Name: Haplopappus heterophyllus
Family: Mimosaceae
Jonquil (Daffodil, Narcissus, Paper White )
Scientific Name: Narcissus jonquilla
Family: Amaryllidaceae
Kaffir Lily (Clivia Lily )
Scientific Name: Clivia minata
Family: Amaryllidaceae
Kiss-me-quick (Yesterday, Today, Tomorrow, Lady-of-the-Night, Morning-Noon-and-Night, Fransiscan Rain Tree)
Scientific Name: Brunfelsia species
Family: Solanaceae
Klamath Weed (St. John's Wort )
Scientific Name: Hypericum perforatum
Family: Clusiaceae
Kudu Lily (Desert Azalea, Mock Azalea, Sabi Star, Impala Lily, Desert Rose)
Scientific Name: Adenium obesum
Family: Apocynaceae
Lady-of-the-night (Yesterday, Today, Tomorrow, Kiss-Me-Quick, Morning-Noon-and-Night, Fransiscan Rain Tree)
Scientific Name: Brunfelsia species
Family: Solanaceae
Lambkill (Sheep Laurel)
Scientific Name: Kalmia augustifolia
Family: Ericaceae
Larkspur
Scientific Name: Delphinium species
Family: Ranunculaceae
Laurel (Mountain laurel, Spoonwood, Mountain Ivy, Calico Bush, Ivy Bush )
Scientific Name: Kalmia latifolia
Family: Ericaceae
Leatherflower (Clematis, Virgin's Bower )
Scientific Name: Clematis sp.
Family: Ranunculaceae
Leek (Elephant Garlic )
Scientific Name: Allium ampeloprasum
Family: Liliaceae
Lemon
Scientific Name: Citrus limonia
Family: Rutaceae
Lenten Rose (Hellebore, Christmas Rose, Easter Rose )
Scientific Name: Helleborus niger
Family: Ranunculaceae
Lily of the Valley
Scientific Name: Convalaria majalis
Family: Liliaceae
Lily-of-the-Valley Bush (Andromeda Japonica, Pieris )
Scientific Name: Pieris japonica
Family: Ericaceae
Lime
Scientific Name: Citrus aurantifolia
Family: Rutaceae
Lobelia (Cardinal Flower, Indian Pink )
Scientific Name: Lobelia cardinalis
Family: Campanulaceae
Loco Weed
Scientific Name: Astragalus and Oxytropis species
Family: Fabaceae
Locust
Scientific Name: Robinia species
Family: Mimosaceae
Lord-and-Ladies (Arum, Wake Robin, Adam-and-Eve, Starch Root, Bobbins, Cuckoo Plant)
Scientific Name: Arum maculatum
Family: Araceae
Maidens Breath (Baby's Breath)
Scientific Name: Gypsophila elegans
Family: Caryophyllaceae
Maleberry (Staggerbush, Fetterbush )
Scientific Name: Lyonia sp.
Family: Ericaceae
Marijuana (Indian Hemp, Hashish)
Scientific Name: Cannabis sativa
Family: Cannabaceae
Mayapple (Indian Apple Root, Umbrella Leaf, Wild Lemon, Hog Apple, Duck's Foot, Raccoonberry, American Mandrake)
Scientific Name: Podophyllum peltatum
Family: Berberidaceae
Mayweed (Dog Daisy, Poison Daisy, Stinking Chamomile, Ground Apple, Dog Fennel, Chamomile )
Scientific Name: Anthemis
Family: Asteraceae
Meadow Saffron (Autumn Crocus)
Scientific Name: Colchicum autumnale
Family: Liliaceae
Milfoil (Yarrow)
Scientific Name: Achillea millefolium
Family: Asteraceae
Milkweed
Scientific Name: Asclepias species
Family: Asclepiadaceae
Mistletoe "American" (American Mistletoe)
Scientific Name: Phoradendron flavescens
Family: Viscaceae
Mole Bean Plant
Scientific Name: Ricinus communis
Family: Euphobiaceae
Morning-Noon-and-Night (Yesterday, Today, Tomorrow, Kiss-Me-Quick, Lady-of-the-Night, Fransiscan Rain Tree)
Scientific Name: Brunfelsia species
Family: Solanaceae
Moss Rose (Wild Portulaca, Rock Moss, Purslane, Pigwee, Pusley)
Scientific Name: Portulaca oleracea
Family: Portulacaceae
Mountain Laurel
Scientific Name: Kalmia latifolia
Family: Ericaceae
Mum (Chrysanthemum, Daisy)
Scientific Name: Chrysanthemum spp.
Family: Compositae
Nandina (Sacred Bamboo, Heavenly Bamboo)
Scientific Name: Nandina domestica
Family: Berberidaceae
Narcissus (Daffodil, Jonquil, Paper White)
Scientific Name: Narcissus spp
Family: Amaryllidaceae
Needlepoint Ivy (Branching Ivy, Glacier Ivy, English Ivy, Sweetheart Ivy, California Ivy)
Scientific Name: Hedera helix
Family: Araliaceae
Nicotiana (Tree Tobacco, Tobacco, Mustard Tree)
Scientific Name: Nicotiana glauca
Family: Solanaceae
Nightshade (Deadly Nightshade, Black Nightshade)
Scientific Name: Solanum spp
Family: Solanaceae
Oak
Scientific Name: Quercus species
Family: Fagaceae
Oleander (Rose-Bay)
Scientific Name: Nerium oleander
Family: Apocynaceae
Onion
Scientific Name: Allium cepa
Family: Liliaceae
Orange
Scientific Name: Citrus sinensis
Family: Rutaceae
Oregon Holly (English Holly, European Holly, Inkberry, American Holly, Winterberry)
Scientific Name: Ilex opaca
Family: Aquifoliaceae
Ornamental Pepper (Natal Cherry, Winter Cherry, Jerusalem Cherry )
Scientific Name: Solanum pseudocapsicum
Family: Solanaceae
Pacific Yew (English Yew, Western Yew, Japanese Yew, Anglo-Japanese Yew)
Scientific Name: Taxus brevifolia
Family: Taxaceae
Pale Laurel
Scientific Name: Kalmia polifolia
Family:
Paper White (Daffodil, Jonquil, Narcissus)
Scientific Name: Narcissus spp
Family: Amaryllidaceae
Paraguayan Jasmine (Yesterday, Today, Tomorrow, Lady-of-the-Night, Morning-Noon-and-Night, Kiss-Me-Quick , Fransiscan Rain Tree)
Scientific Name: Brunfelsia species
Family: Solanaceae
Patterson's Curse (Viper's Bugloss)
Scientific Name: Echium plantagineum
Family: Boraginaceae
Peach (Plum, Apricot, Cherry)
Scientific Name: Prunus species
Family: Rosaceae
Peacock Flower (Barbados Pride, Dwarf Poinciana)
Scientific Name: Caesalpinia pulcherrima
Family: Fabaceae
Peony
Scientific Name: Paeonis officinalis
Family: Paeniaceae
Perennial Pea (Sweet Pea, Everlasting Pea )
Scientific Name: Lathyrus latifolius
Family: Fabaceae
Periwinkle (Running Myrtle)
Scientific Name: Vinca rosea
Family: Apocynaceae
Pie Plant (Rhubarb)
Scientific Name: Rheum rhabarbarium
Family: Polygonaceae
Plantain Lily (hosta)
Scientific Name: Hosta plantaginea
Family: Liliaceae
Plum (similar plants: apricot, peach, cherry)
Scientific Name: Prunus species
Family: Rosaceae
Poison Daisy (Mayweed, Dog Daisy, Stinking Chamomile, Ground Apple, Dog Fennel, Chamomile )
Scientific Name: Anthemis
Family: Asteraceae
Poison Hemlock (Poison Parsley, Spotted Hemlock, Winter Fern, California Fern, Nebraska Fern, Deadly Hemlock )
Scientific Name: Conium maculatum
Family: Umbelliferae
Poison Parsnip (water hemlock, cowbane)
Scientific Name: Cicuta maculata
Family: Apiaceae
Ponderosa Pine (Blackjack Pine, Western Yellow Pine, Yellow Pine, Bull Pine )
Scientific Name: Pinus ponderosa
Family: Pinaceae
Portulaca (Wild Portulaca, Rock Moss, Purslane, Pigwee, Pusley, Moss Rose)
Scientific Name: Portulaca oleracea
Family: Portulacaceae
Prayer Bean (Rosary Pea, Buddhist rosary bead, Indian Bead, Indian Licorice, Love Bean, Lucky Bean, Seminole Bead, Weather Plant )
Scientific Name: Abrus precatorius
Family: Leguminosae
Precatory Bean (Rosary Pea, Buddhist rosary bead, Indian Bead, Indian Licorice, Love Bean, Lucky Bean, Seminole Bead, Weather Plant, Prayer Bean)
Scientific Name: Abrus precatorius
Family: Leguminosae
Pride-of-India (China Ball Tree, Paradise Tree, Persian Lilac, White Cedar, Japanese Bead Tree, Texas Umbrella Tree, Bead Tree, Chinaberry Tree )
Scientific Name: Melia azedarach
Family: Meliaceae
Primrose
Scientific Name: Primula vulgaris
Family: Primulaceae
Privet (amur, wax-leaf, common privet)
Scientific Name: Ligustrum japonicum
Family: Oleaceae
Purslane (Wild Portulaca, Rock Moss, Portulaca, Pigwee, Pusley, Moss Rose)
Scientific Name: Portulaca oleracea
Family: Portulacaceae
Ragwort (Golden Ragwort)
Scientific Name: Senecio species
Family: Compositae
Ranger's Button (White Heads)
Scientific Name: Sphenosciadium capitellatum
Family: Apiaceae
Rattlebox
Scientific Name: Crotalaria albida
Family: Papilionaceae
Rayless Goldenrod
Scientific Name: Haplopappus heterophyllus
Family: Asteraceae
Red Maple (Swamp Maple, Scarlet Maple, Curled Maple, Soft Maple )
Scientific Name: Acer rubrum
Family: Aceraceae
Rhododendron (Rosebay, Azalea)
Scientific Name: Rhododendron spp
Family: Ericaceae
Rhubarb (Pie Plant)
Scientific Name: Rheum rhabarbarium
Family: Polygonaceae
Rock Moss (Wild Portulaca, Moss Rose, Purslane, Pigwee, Pusley)
Scientific Name: Portulaca oleracea
Family: Portulacaceae
Rose of China (Hibiscus, Rose of Sharon)
Scientific Name: Hibiscus syriacus
Family: Malvaceae
Rose of Sharon (Hibiscus, Rose of China)
Scientific Name: Hibiscus syriacus
Family: Malvaceae
Rosebay (Rhododendron, Azalea)
Scientific Name: Rhododendron spp
Family: Ericaceae
Running Myrtle (Periwinkle)
Scientific Name: Vinca rosea
Family: Apocynaceae
Russian Knapweed
Scientific Name: Centaurea repens
Family: Compositae
Sabi Star (Desert Azalea, Mock Azalea, Desert Rose, Impala Lily, Kudu Lily )
Scientific Name: Adenium obesum
Family: Apocynaceae
Sacred Bamboo (Heavenly Bamboo, Nandina)
Scientific Name: Nandina domestica
Family: Berberidaceae
Sago Palm (Coontie Palm, Cardboard Palm, cycads and zamias)
Scientific Name: Cycas revoluta, zamia species
Family: Cycadaceae
Scouring Rush (Field Horsetail, Common Horsetail, Western Horsetail )
Scientific Name: Equisetum arvense
Family: Equisetaceae
Seaside Daisy (Showy Daisy, Horseweed, Fleabane)
Scientific Name: Erigeron speciosus
Family: Asteraceae
Seven Bark (Hydrangea, Hortensia, Hills of Snow)
Scientific Name: Hydrangea arborescens
Family: Hydrangeaceae
Shamrock Plant (Good Luck Plant, Sorrel )
Scientific Name: Oxalis spp.
Family:
Sheepkill (Mountain Laurel)
Scientific Name: Kalmia latifolia
Family: Ericaceae
Showy Daisy (Seaside Daisy, Horseweed, Fleabane)
Scientific Name: Erigeron speciosus
Family: Asteraceae
Skunk Cabbage (Skunk Weed, Polecat Weed, Meadow Cabbage, Swamp Cabbage )
Scientific Name: Symplocarpus foetidus
Family: Araceae
Solomon’s Lily (Black Calla, Wild Calla, Wild Arum )
Scientific Name: Arum palestinum
Family: Araceae
Spanish Thyme (Indian Borage, Bread and Butter Plant, Coleus, East Indian Thyme, Stinging Thyme, Country Boarage; many others )
Scientific Name: Coleus ampoinicus
Family: Labiatae
Spindle Tree (Wahoo, Burning Bush)
Scientific Name: Euonymus atropurpurea (Euonymus occidentalis)
Family: Celastraceae
Spring Parsley
Scientific Name: Petrolelinum crispum
Family: Apiaceae
St. John’s Wort (Klamath Weed)
Scientific Name: Hypericum perforatum
Family: Clusiaceae
Staggerbush (Fetterbush, Maleberry )
Scientific Name: Lyonia sp.
Family: Ericaceae
Starch Root (Arum, Lord-and-Ladies, Adam-and-Eve, Wake Robin, Bobbins, Cuckoo Plant)
Scientific Name: Arum maculatum
Family: Araceae
Stinking Chamomile (Mayweed, Poison Daisy, Dog Daisy, Ground Apple, Dog Fennel, Chamomile )
Scientific Name: Anthemis
Family: Asteraceae
Sudan Grass / Hybrid Sudan
Scientific Name: Sorhum vulgare var. sudanesis
Family: Gramineae
Superb Lily (Glory Lily, Climbing Lily, Gloriosa Lily)
Scientific Name: Gloriosa superba
Family: Liliaceae
Swamp Maple (Red Maple, Scarlet Maple, Curled Maple, Soft Maple )
Scientific Name: Acer rubrum
Family: Aceraceae
Sweet Pea (Perennial Pea, Everlasting Pea )
Scientific Name: Lathyrus latifolius
Family: Fabaceae
Sweetheart Ivy (English Ivy, Glacier Ivy, Needlepoint Ivy, Branching Ivy, California Ivy )
Scientific Name: Hedera helix
Family: Araliaceae
Texas Umbrella Tree (China Ball Tree, Paradise Tree, Persian Lilac, White Cedar, Japanese Bead Tree, Bead Tree, Pride-of-India, Chinaberry Tree )
Scientific Name: Melia azedarach
Family: Meliaceae
Tobacco (Tree Tobacco, Nicotiana, Mustard Tree)
Scientific Name: Nicotiana glauca
Family: Solanaceae
Tomato Plant
Scientific Name: Lycopersicon spp
Family: Solanaceae
Tree Tobacco (Nicotania, Tobacco, Mustard Tree)
Scientific Name: Nicotiana glauca
Family: Solanaceae
Tulip
Scientific Name: Tulipa species
Family: Liliaceae
Umbrella Leaf (Indian Apple Root, American Mandrake, Wild Lemon, Hog Apple, Duck's Foot, Raccoonberry, American Mandrake)
Scientific Name: Podophyllum peltatum
Family: Berberidaceae
Viper's Bugloss
Scientific Name: Echium vulgare
Family: Boraginaceae
Viper's Bugloss (Patterson's Curse)
Scientific Name: Echium plantagineum
Family: Boraginaceae
Virgin's Bower (clematis, leatherflower)
Scientific Name: Clematis sp.
Family: Ranunculaceae
Wahoo (Burning Bush, Spindle Tree )
Scientific Name: Euonymus occidentalis (Euonymus atropurpurea)
Family: Celastraceae
Wake Robin (Arum, Lord-and-Ladies, Adam-and-Eve, Starch Root, Bobbins, Cuckoo Plant)
Scientific Name: Arum maculatum
Family: Araceae
Water Hemlock (cowbane, poison parsnip)
Scientific Name: Cicuta maculata
Family: Apiaceae
Water Hyacinth
Scientific Name: Eichhornia crassipes
Family: Pontederiaceae
Wax-Leaf (privet, amur, common privet)
Scientific Name: Ligustrum japonicum
Family: Oleaceae
Weeping Fig (fig, indian rubber plant)
Scientific Name: Ficus sp.
Family: Moraceae
Western Yellow Pine (Blackjack Pine, Ponderosa Pine, Yellow Pine, Bull Pine )
Scientific Name: Pinus ponderosa
Family: Pinaceae
Western Yew (English Yew, Pacific Yew, Japanese Yew, Anglo-Japanese Yew )
Scientific Name: Taxus brevifolia
Family: Taxaceae
White Heads (Ranger's Button)
Scientific Name: Sphenosciadium capitellatum
Family: Apiaceae
White Snakeroot (fall poison, richweed, tremetol)
Scientific Name: Eupatorium rugosum
Family: Asteraceae
White/Black/Yellow Indian Mustard
Scientific Name: Brassica species
Family: Brassicaceae
Wild Arum (Black Calla, Wild Calla, Solomon's Lily)
Scientific Name: Arum palestinum
Family: Araceae
Wild Calla (Black Calla, Wild Arum, Solomon's Lily)
Scientific Name: Arum palestinum
Family: Araceae
Wild Coffee (Geranium-Leaf Aralia, Coffee Tree)
Scientific Name: Polyscias guilfoyei (Aralia guilfoyei)
Family: Araliaceae
Wild Radish
Scientific Name: Raphanus raphanistrum
Family: Brassicaceae
Winter Cherry (Natal Cherry, Jerusalem Cherry)
Scientific Name: Solanum pseudocapsicum
Family: Solanaceae
Winterberry (English Holly, European Holly, Oregon Holly, Inkberry, American Holly)
Scientific Name: Ilex opaca
Family: Aquifoliaceae
Wintercress
Scientific Name: Barbarea orthoceras
Family: Brassicaceae
Wisteria
Scientific Name: wisteria species
Family: Fabaceae
Wormseed Mustard
Scientific Name: Erysimum cheiranthoides
Family: Brassicaceae
Yarrow (milfoil)
Scientific Name: Achillea millefolium
Family: Asteraceae
Yellow Oleander
Scientific Name: Thevetia peruviana
Family: Apocynaceae
Yellow Pine (Blackjack Pine, Ponderosa Pine, Western Yellow Pine, Bull Pine )
Scientific Name: Pinus ponderosa
Family: Pinaceae
Yellow Starthistle
Scientific Name: Centaurea solstitialis
Family: Compositae
Yellowrocket
Scientific Name: Barbarea vulgaris
Family: Brassicaceae
Yesterday, Today, Tomorrow (Morning-Noon-and-Night, Kiss-Me-Quick, Lady-of-the-Night, Fransiscan Rain Tree, Brunfelsia)
Scientific Name: Brunfelsia species
Family: Solanaceae
Yew (japanese yew)
Scientific Name: Taxus sp.
Family: Taxaceae
Yew Pine (buddhist pine)
Scientific Name: Podocarpus macrophylla
Family: Podocarpacaea
Yucca
Scientific Name: Yucca sp.
Family: Agavaceae
Plants Non-Toxic to Horses
Achira (Canna, Arrowroot)
Scientific Name: Canna edulis
Family: Cannaceae
Acorn Squash (Similar plants:pumpkin, zucchini)
Scientific Name: Cucurbita pepo
Family: Cucurbitaceae
African Daisy (Cape Marigold)
Scientific Name: Arctotis Stoechadifolia (Dimorphotheca Pluvialis; Gerbera Jamesonii)
Family: Compositae
African Violet (Cape Marigold)
Scientific Name: Saintpaulia spp.
Family: Gesneriaceae
Algaroba (Kiawe, Mesquite)
Scientific Name: Prosopis limensis
Family: Mimosaceae
Alumroot (Coral Bells, Heuchera)
Scientific Name: Heuchera sanguinea
Family: Saxifragaceae
Alyssum (Alyssum varieties)
Scientific Name: Alyssum spp.
Family: Brassicaceae
Antirrhinum Multiflorum (Withered Snapdragon)
Scientific Name: Antirrhinum glandulosum (Antirrhinum multiflorum)
Family: Scrophulariaceae
Antirrhinum Multiflorum (Withered Snapdragon)
Scientific Name: Antirrhinum multiflorum (Antirrhinum glandulosum)
Family: Scrophulariaceae
Artillery Plant
Scientific Name: Pilea microphylla
Family: Urticaceae
Autumn Olive (Silver Berry, Russian Olive)
Scientific Name: Elaeagnus sp.
Family: Elaeagnaceae
Baby’s Tears (Polka Dot Plant, Measles Plant, Flamingo Plant, Freckle Face, Pink Splash)
Scientific Name: Hypoestes phyllostachya
Family: Acanthaceae
Bamboo (Golden Bamboo, Fishpole Bamboo)
Scientific Name: Phyllostachys aurea
Family: Gramineae
Bamboo Vine (Blaspheme vine, Laurel-leaved Greenbrier )
Scientific Name: Smilax laurifolia
Family: Liliaceae
Banana (Plantain )
Scientific Name: Musa acuminata
Family: Musaceae
Banana Squash
Scientific Name: Cucurbita maxima var. banana
Family: Cucurbitaceae
Barberton Daisy (Transvaal Daisy, African Daisy, Veldt Daisy, Gerbera Daisy )
Scientific Name: Gerbera jamesonii
Family: Compositae
Beets (Beet Root, Red Beet, Swiss Chard, Roman Kale, Sugar Beet)
Scientific Name: Beta vulgaris
Family: Chenopodiaceae
Big Shagbark Hickory (Big Shellbark Hickory, Shellbark Hickory, Shagbark Hickory)
Scientific Name: Carya laciniosa
Family: Juglandaceae
Big Shellbark Hickory (Shellbark Hickory)
Scientific Name: Carya laciniosa
Family: Juglandaceae
Bitter Pecan (Water Hickory )
Scientific Name: Carya aquatica
Family: Juglandaceae
Bitternut
Scientific Name: Carya cordiformis
Family: Juglandaceae
Black Haw (Wild raisin, Tea Plant, Cowberry, Nannyberry, Sweet Viburnum, Nanny Plum, Sheepberry, Sweetberry )
Scientific Name: Viburnum lentago
Family: Caprifoliaceae
Black Hawthorn (Weisdornbluten, Blackthorn, Thorn Apple, Thorn Plum, Pirliteiro, Red Hawthorn, May Bush, Oxyacantha, Haw Apple, Black Haw, Aubepine )
Scientific Name: Crataegus douglasii
Family: Rosaceae
Blaspheme Vine (Blaspheme vine, Laurel-leaved Greenbrier, Bamboo Vine)
Scientific Name: Smilax laurifolia
Family: Liliaceae
Blooming Sally (Willow Herb, Great Willow Herb, Fire Weed )
Scientific Name: Epilobium angustifolium
Family: Onagraceae
Blue Bead (Corn Lily )
Scientific Name: Clintonia borealis
Family: Liliaceae
Blue Daisy (Felicia, Blue Marguerite)
Scientific Name: Felicia amelloides (Agathaea coelestis )
Family: Compositae
Blue Daisy 2 (Felicia, Blue Marguerite)
Scientific Name: Agathaea coelestis (Felicia amelloides)
Family: Compositae
Blue-dicks (Wild Hyacinth )
Scientific Name: Dichelostemma pulchellum (Brodiaea pulchella, Hookera pulchella )
Family: Amaryllidaceae
Blue-dicks 2 (Wild Hyacinth )
Scientific Name: Hookera pulchella (Brodiaea pulchella, Dichelostemma pulchellum)
Family: Amaryllidaceae
Blue-dicks 3 (Wild Hyacinth )
Scientific Name: Brodiaea pulchella (Dichelostemma pulchellum, Hookera pulchella )
Family: Amaryllidaceae
Bold Sword Fern
Scientific Name: Nephrolepis biserrata
Family: Dryopteridaceae
Bottle Palm (Elephant-foot Tree, Pony Tail Plant )
Scientific Name: Beaucarnea recurvata (Nolina tuberculata)
Family: Agavaceae
Bottle Palm 2 (Elephant-foot Tree, Pony Tail Plant )
Scientific Name: Nolina tuberculata (Beaucarnea recurvata)
Family: Agavaceae
Bottlebrush (Weeping Bottlebrush, Prickly Bottlebrush, Crimson Bottlebrush )
Scientific Name: Callistemon species
Family: Myrtaceae
Brazillian Orchid
Scientific Name: Sophronitis
Family: Orchidaceae
Bride's Bonnet (Queencup )
Scientific Name: Clintonia uniflora
Family: Liliaceae
Bristly Greenbrier (Hagbrier, Hellfetter )
Scientific Name: Smilax hispida
Family: Liliaceae
Brodiaea Pulchella (Wild Hyacinth, Blue-dicks)
Scientific Name: Dichelostemma pulchellum (Brodiaea pulchella , Hookera pulchella)
Family: Amaryllidaceae
Broom Hickory (Big Shellbark Hickory, Shellbark Hickory)
Scientific Name: Carya laciniosa
Family: Juglandaceae
Bullbrier (Catbrier, Horsebrier, Common Greenbrier )
Scientific Name: Smilax rotundifolia
Family: Liliaceae
Bur Gourd (Goareberry Gourd, Gooseberry Gourd, West Indian Gherkin )
Scientific Name: Cucumis anguria
Family: Cucurbitaceae
Burro's Tail (Horse's Tail, Donkey's Tail, Lamb's Tail )
Scientific Name: Sedum morganianum
Family: Crassulaceae
Buttercup Squash
Scientific Name: Cucurbita maxima cv buttercup
Family: Cucurbitaceae
Butterfly Ginger (White Ginger, Cinnamon Jasmine, Garland Flower, Ginger Lily )
Scientific Name: Hedychium coronarium
Family:
Butterfly Squash
Scientific Name: Cucurbita maxima cv butterfly
Family: Cucurbitaceae
Caeroba (Rattle Snake Plant, Peacock Plant, Zebra Plant )
Scientific Name: Calathea insignis
Family: Marantaceae
Calathea Lancifolia
Scientific Name: Calathea lancifolia (Maranta insignis; Calathea insignis)
Family: Marantaceae
Calathea Lancifolia 2
Scientific Name: Maranta insignis (Calathea lancifolia; Calathea insignis)
Family: Marantaceae
Calathea Lancifolia 3
Scientific Name: Calathea insignis (Maranta insignis; Calathea lancifolia)
Family: Marantaceae
California Pitcher Plant (Cobra Orchid, Cobra Plant, Cobra Lily, Chrysamphora )
Scientific Name: Darlingtonia californica
Family: Sarraceniaceae
Callistemon Brachyandrus (Weeping Bottlebrush, Prickly Bottlebrush, Crimson Bottlebrush, Bottlebrush, Callistemon brachyandrus )
Scientific Name: Callistemon species
Family: Myrtaceae
Callistemon citrinus (Crimson Bottlebrush )
Scientific Name: Callistemon citrinus
Family: Myrtaceae
Callistemon viminalis (Weeping Bottlebrush, Prickly Bottlebrush, Crimson Bottlebrush )
Scientific Name: Callistemon viminalis
Family: Myrtaceae
Calochortus nuttalli (Sego Lily, Star Tulip, Mariposa Lily, Cat Ear, Butterfly Tulip )
Scientific Name: Calochortus nuttalli (Calochortus luteus)
Family: Liliaceae
Calochortus nuttalli 2 (Sego Lily, Star Tulip, Mariposa Lily, Cat Ear, Butterfly Tulip )
Scientific Name: Calochortus luteus (Calochortus nuttalli)
Family: Liliaceae
Camellia (Common Camellia, Peony Camellia )
Scientific Name: Camellia japonica (Thea japonica)
Family: Theaceae
Canada Hemlock
Scientific Name: Tsuga canadensis
Family: Pinaceae
Canary Date Palm
Scientific Name: Phoenix canariensis
Family: Palmae
Candle Plant
Scientific Name: Plectranthus coleoides
Family: Labiatae
Canterbury-bell
Scientific Name: Gloxinia perennis
Family: Gesneriaceae
Cape Marigold (African Daisy )
Scientific Name: Arctotis Stoechadifolia (Dimorphotheca Pluvialis; Gerbera Jamesonii)
Family: Compositae
Cape Primrose (Twisted Fruit, Bavarian Belle )
Scientific Name: Streptocarpus spp.
Family: Gesneriaceae
Carob (Sugar Pod, Locust Pods, Algaroba, Carob Tree Kharoub, Beans )
Scientific Name: Ceratonia siliqua
Family: Fabaceae
Caroba (Caaroba, Carob Tree, Carobhina, Bignonia )
Scientific Name: Jacaranda procera
Family: Bignoniaceae
Carolina Hemlock
Scientific Name: Tsuga caroliniana
Family: Pinaceae
Carrion Flower (Jacob's Ladder )
Scientific Name: Smilax herbacea
Family: Liliaceae
Carrion Flower 2 (Hairy Toad Plant )
Scientific Name: Stapelia hirsata
Family: Asclepiadaceae
Carrot Flower (Garden Carrot)
Scientific Name: Daucus carota var. sativa
Family: Umbelliferae
Casaba Melon (Honeydew Melon, True Cantaloupe, Muskmelon )
Scientific Name: Cucumis melo
Family: Cucurbitaceae
Cat Brier (China Root, Ti-hu-ling, Shiny Leaf Smilax )
Scientific Name: Smilax glabra
Family: Liliaceae
Cat Ear (Sego Lily, Star Tulip, Mariposa Lily, Cat Ear, Butterfly Tulip, Calochortus)
Scientific Name: Calochortus nuttalli; Calochortus luteus
Family: Liliaceae
Celosia Globosa (Globe Amarantha, Perpetua)
Scientific Name: Celosia globosa
Family: Amaranthaceae
Celosia Plumosa (Cockscomb)
Scientific Name: Celosia plumosa
Family: Amaranthaceae
Celosia Spicata (Flamingo Feather )
Scientific Name: Celosia spicata
Family: Amaranthaceae
Chaparral (Creosote Bush, Greasewood )
Scientific Name: Larrea tridentata
Family: Zygophyllaceae
Chestnut (American Chestnut )
Scientific Name: Castanea dentata
Family: Fagaceae
Chickens and Hens (Hens and Chickens, Mother Hens and Chicks )
Scientific Name: Echeveria elegans
Family: Crassulaceae
Chin-lao-shu (China Root, Ti-hu-ling, Shiny Leaf Smilax, Catbrier )
Scientific Name: Smilax glabra
Family: Liliaceae
China Root (Catbrier, Ti-hu-ling, Shiny Leaf Smilax )
Scientific Name: Smilax glabra
Family: Liliaceae
Chinese Plumbago
Scientific Name: Ceratostigma willmottianum
Family: Plumbaginaceae
Cinnamon
Scientific Name: Cinnamonium
Family: Lauraceae
Cinquefoil (Silver Cinquefoil, Shrubby Cinquefoil, Rough Cinquefoil, Sulfur Cinquefoil, Rock Cinquefoil )
Scientific Name: Potentilla spp.
Family: Rosaceae
Clearweed (Coolwort, Richweed )
Scientific Name: Pilea pumila
Family: Urticaceae
Cliff Brake (Button Fern, Green Cliff Brack )
Scientific Name: Pellaea rotundifolia
Family: Pteridaceae
Club Moss (Cushion Moss, Irish Moss, Krauss' Spikemoss, Spreading Club Moss, Trailing Irish Moss )
Scientific Name: Selaginella kraussiana
Family: Selaginellaceae
Cocks Comb (Pile Wort, Lady Bleeding, Red Cocks Comb )
Scientific Name: Amaranthus hypochondriacus
Family: Amaranthaceae
Common Camellia (Camellia, Peony Camellia )
Scientific Name: Camellia japonica; Thea japonica
Family: Th
...