Wednesday, 11 April 2012 09:11

Plants Poisonous to Horses

Written by  Petlovers
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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 |

§ 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 | 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 | Family: Rosaceae

§ Apricot (Group also includes Plum , Peach, Cherry) | Scientific Name: Prunus armeniaca | 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

§ Boxwood | Scientific Name: Buxus sp. | Family: Buxaceae

§ 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 | 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

§ Catsear (Flatweed, Cat’s Ear, False Dandelion) | Scientific Name: Hypochaeris radicata | Family: Asteraceae

§ 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 guilfoylei | 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 (Dog Fennel) | Scientific Name: Achillea millefolium | Family: Compositae

§ 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 guilfoylei | 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. |

§ 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 (Chamomile, Garden Chamomile, Roman Chamomile) | Scientific Name: Anthemis nobilis | 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 | Family: Boraginaceae

§ Hyacinth | Scientific Name: Hyacinthus orientalis | Family: Liliaceae

§ Hydrangea (Hortensia, Hills of Snow, Seven Bark) | Scientific Name: Hydrangea arborescens | Family: Hydrangeaceae

§ 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 (Marijuana, Hashish) | Scientific Name: Cannabis sativa | Family: Cannabaceae

§ Indian Hemp (Dogbane Hemp, Bitter Root) | Scientific Name: Apocynum androsaemifolium | Family: Apocynaceae

§ 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: Convallaria 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 (Poison Daisy, Stinking Chamomile) | Scientific Name: Anthemis cotula | 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 |

§ 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. Vinca) | 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, Stinking Chamomile) | Scientific Name: Anthemis cotula | 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, Tansy) | 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

§ Roman Chamomile (Chamomile, Garden Chamomile, Ground Apple) | Scientific Name: Anthemis nobilis | Family: Asteraceae

§ 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, Vinca) | 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. |

§ 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 | Family: Celastraceae

§ Spring Parsley | Scientific Name: Petroselinum 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) | Scientific Name: Anthemis cotula | 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

§ Sweet Potato Vine (Sweet potato) | Scientific Name: Ipomoea batatas | Family: Convolvulaceae

§ 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

§ Vinca (Periwinkle, Running Myrtle) | Scientific Name: Vinca rosea | Family: Apocynaceae

§ Viper’s Bugloss (Patterson’s Curse) | Scientific Name: Echium plantagineum | Family: Boraginaceae

§ Viper’s Bugloss | Scientific Name: Echium vulgare | Family: Boraginaceae

§ Virgin’s Bower (Clematis, Leatherflower) | Scientific Name: Clematis sp. | Family: Ranunculaceae

§ Wahoo (Burning Bush, Spindle Tree) | Scientific Name: Euonymus occidentalis | 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 guilfoylei | 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

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