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~The rose has thorns only for those who would gather it~
~Chinese Proverb~


Poisonous Plants

Many of our popular houseplants come from tropical climates where the highest percentage of poisonous plants are found. Though, not all of these plants are fatal, but some can cause severe digestive problems, pain and discomfort. Some plant parts are non-toxic, while other parts on the same plant are toxic. Also many plants within a certain family may be toxic, so if you know that one plant in a family is poisonous, be especially cautious with other plants in that same family.
Listed below are common house plants that are poisonous.


flower

Aconite Aconitum napellus
African Rue Peganum harmala
African Blood Lily  Scadoxus multiflorus
African Blue Lily  Agapanthus orientalis
African Evergreen  Syngonium podophyllum
Agapanthus  Agapanthus orientalis (A. praecox ssp. orientalis)
Alfalfa/Lucerne Medicago sativa
Aloe Vera/Burn Plant (Latex, Juices) Aloe barbadensis
Amaryllis (Bulbs) Amaryllis sp.
Angel's Trumpet/Thorn Apple (AllParts) Datura innoxia
Angels' Wings (All Parts) Caladium hortulanum
Anthurium  Anthurium spp.
Apple (Seeds) Mallus sp.
Apricot (Seeds, Twigs, Leaves) Prunus ameniaca
Arnica Arnica montana
Arrow Grass Miscanthus sinensis
Asparagus Fern Asparagus myriocladus
Azalea (All Parts) Rhododendron sp.

flower

Baby's breath  Gypsophila paniculata
Baneberry RedWhite/Doll's-eyes (Berries, Roots, Foliage) Actaea spp.
Baptisia Baptisia spp.
Barberry (Berries, Roots, Foliage) Berberis vulgaris
Belladonna Atropa belladonna
Bird's Foot Trefoil Lotus corniculatus
Bird of Paradise (Flower, Fruit, Seeds) Strelitzia reginae
Bittersweet Solanum dulcamara
Bitterweed Hymenoxys odorata
Black Locust Robinia pseudoacacia
Black Nightshade/Garden Nightshade/Poisonberry Solanum nigrum
Bladder Pod/Sesbane/Coffee Bean Sesbania vesicaria
Bleeding Heart (Foliage) Dicentra spectabilis
Blood Lily  Scadoxus multiflorus (Haemanthus multiflorus)
Blood Root  (Red Sap) Sanguinaria canadensis
Boston Ivy (All Parts) Parthenocissus quinquefolia
Bottlebrush Buckeye  Aesculus parviflora
Boxwood Buxus sempervirens
Bracken Fern Pteridium aquilinum
Broom Cytisus scoparius
Broomweed/Snakeweed/Slinkweed/Turpentineweed Gutierrezia microcephala
Buckeye Aesculus spp.
Buckwheat Fagoypyrum esculentum
Burning Bush  Euonymus afropurpurea
Burro's Tail/Donkey's Tail  (All Parts) Sedum morganianum
Buttercup  (All parts have irritant juices) Ranunculus sp.

flower

Caladium  (All Parts) Caladium
Calla Lily  Zantedeschia aethiopica
Candelabra Cactus Euphorbia lactea
Carolina Jessamine Gelsemium sempervirens
Cardinal Flower Lobelia spp.
Carnation Dianthus spp.
Castor Bean (All Parts that contain Sap, Seeds) Ricinus communis
Cassava Manihot esculenta
Celandine Chelidonium majus
Century Plant Agave spp.
Cherry/Black/Bitter/Pin Cherry  (Leaves, Twigs,Seeds) Prunus cerasus
Chinaberry Tree Melia azedarach
Chinese Lantern  Physalis alkekengi
Christmas Cherry Solanum pseudocapsicum
Christmas Rose Helleborus niger
Choke Cherry (Leaves,Seed Pits, Stems, Bark) Prunus virginiana
Chrysanthemums  (Leaves,Stalks) Chrysanthemum indicum
Clematis  Clematis spp.
Clover/Alsike Clover/Red Clover/White Clover Trifolium spp.
Clivia  Clivia miniata
Cocklebur Xanthium spp
Columbine Aquilegia vulgaris
Corn Cockle Agrostemma githago
Coralberry Symphoricarpos spp.
Cotoneaster Cotoneaster salicifolius
Cotton Gossypium hirsutum
Cow Cockle/Bouncing Bet Saponaria spp.
Cowbane/Water Hemlock Cicuta spp.
Cowslip/Marsh Marigold Caltha palustris
Creeping Charlie/Gill-over-the-Ground (All Parts) Glecoma hederacea
Creeping Fig  Ficus carica
Crocus (Bulbs) Colchicum sp.
Crotalaria/Rattlebox Crotalaria spp
Croton (Bark, Roots, Latex) Codiaeum variegatum
Crowfoot ( All Parts) Ranunculus spp.
Crown-of-thorns  (Sap) Euphorbia milii
Crown Vetch Coronilla varia
Cyclamen (Bulbs, Rhizomes) Cyclamen persicum

flower

Daffodil (Bulbs) Narcissus spp.
Dahlia  Dahlia spp.
Daphne  (Berries, Bark, Leaves) Daphne spp.
Deadly Nightshade Atropa belladonna
Death Cap/Death Angel Mushrooms/Panther Cap/Monkey Agaric  Amanita spp.
Death Camas Zygadenus spp
Delphinium Perennial Delphinium sp.
Desert Plume Stanleya pinnata
Devil's Backbone (Leaves, Stems) Kalanchoe daigremontiana
Devil's Walkingstick  Aralia spinosa
Devil's Ivy  Scindapsus aureus
Devil's Weed/Stink Weed/Jamestown Weed/Angel's Trumpet/Thornapple/Loco Weed/Datura Datura stramonium
Dogbane Apocynum sp.
Dumb Cane  (All Parts) Dieffenbachia sp.
Dutchman's Breeches (Foliage, Roots)
Dwarf Poinciana Caesalpinia spp.

flower

Eastern Skunk Cabbage Symplocarpus foetidus
Eggplant (Leaves) Solanum melongana
Elderberry (All parts except Berry) Sambucus canadensis
Elephant Ears (All Parts) Colocasia esculenta
Emerald Duke  (All Parts) Philodendron hastatum
English Ivy (Leaves, Berries) Hedera helix
Ergot Claviceps purpurea
Eucalyptus Eucalyptus hybrida
Evening Trumpet Flower Gelsemium sempervirens
Everlasting Pea  Lathyrus spp.
Eyebane Euphorbia maculata

flower

Fall Crocus (Bulbs) Colchicum sp.
False Hellebore/Corn Lily Veratrum californicum
Fiddleneck  Amsinckia intermedia
Fig (Sap) Ficus sp.
Fig Wort Scrophularia nodosa
Flamingo Lily (All Parts) Anthurium andraeanum
Flax Linum usitatissimum
Fly poison/Staggergrass/Crow poison Amianthium muscaietoxicum
Finger tree  Euphorbia tirucalli
Firecracker plant Aesculus pavia
Four-o'clock  Mirabilis jalapa
Foxglove (Leaves, Seeds, Flowers) Digitalis sp.
Frangipani (Latex) Plumeria acuminata
Friar's Cap Aconitum napellus
Fritillaria Fritillaria collina

flower

Glacier Ivy  (Leaves, Berries) Hedera glacier
Goat's Rue Tephrosia virginiana
Golden Chain Tree/Laburnum   (Bean-like capsule) Labumum sp.
Goldenrod Solidago sempervirens
Golden Pothos  Epipremnum aureum
Golden Seal  Hydrastis canadensis
Golden Spider Lily  Lycoris aurea (L. africana)
Goodluck Plant  Oxalis spp.
Greasewood Sarcobatus vermiculatus
Groundsel Senecio Senecio
Guajillo Acacia berlandieri

flower

Halogeton Halogeton glomeratus
Heartleaf (All Parts) Philadendron cordatum
Heavenly Bamboo  Nandina domestica
Hedge Mustard Sisymbruim officinale
Hellebore (Leaves, Stems, Berries,Roots) Helleborus niger
Heliotrope Heliotropium arborescens
Hemlock (All Parts containing the yellow, oily sap esp. Leaves) Conium maculatum
Hemp/Dogbane Apocynum cannabinum
Henbane  Hyoscyamus niger
Hens-and-Chicks  (All Parts) Lantana
Holly  (Fruit) Ilex sp.
Horsebrush  Tetradymia spp.
Horse Chestnut  Aesulus hippocastamum
Horsetail Equisetum arvense
Hyacinth  (Bulbs, Leaves, Flowers) Hyacinthus sp.
Hydrangea  (Leaves,Buds) Hydrangea macrophylla

flower

Indian Pink  Spigelia marilandica
Indian Poke Veratrum viride
Indian Tobacco Lobelia inflata
Inkberry Phytolacca americana, P. rigida
Inkweed/Drymary Drymaria pachyphylla
Iris (Underground Stems) Iris spp.

flower

Jack-in-the-Pulpit (All Parts, especially Roots) Arisaema spp.
Japanese Plum  Prunus salicina
Java Bean Phaseolus lunatus
Jessamine  Gelsemium sempervirens
Jimmy Fern/Cloak Fern Notholaena sinuata var cochisensis
Jimson Weed/Thorn Apple (All Parts) Datura stamonium
Jerusalem Cherry  (All Parts, Immature/Mature Fruit, Leaves) Solanum pseudocapsicum
Johnson Grass  Sorghum halepense
Jetberry Bush Rhodotypos scandens
Jeweled Deathcap  Amanita gemmata
Jonquil  Narcissus spp.

flower

Kaffir Lily Clivia miniata
Kentucky Coffee Tree  Gymnocladus dioicus

flower

Laburnum/Golden Chain Tree  (Bean-like capsule) Labumum sp.
Lantana/Red Sage/Yellow Sage/West Indian Lantana Lantana camara
Larkspur (Young Plants and Seeds) Consolida ambigua
Laurel/Ivybush/Lambkill Kalmia
Lechequilla Agave lechequilla
Lily (Leaves,Flowers) Lilium atamasco
Lily (Leaves,Flowers) Lilium gloriosa
Lily of the Incas  Alstroemeria spp.
Lily-of-the-valley (Leaves,Flowers) Convallaria majalis
Lobelia/ Great Lobelia/Cardinal Flower Lobelia sp
Loco Weed/Vetch Astragalus/Oxytropis spp.
Lupines/Bluebonnet Lupinus spp.

flower

Majesty   (All Parts) Philodendron hastatum
Mandrake (Roots, Foliage, Unripe Fruit) Podophyllum peltatum
Marble Queen (All Parts) Scindapsus aureus
Marijuana Cannabis sativa
Mayapple Podophyllum peltatum
Mescal Bean/Frijolito/Mountain Laurel Sophora secundiflora
Mescal Buttons  Lophophora williamsii
Mesquite  Prosopis glandulosa
Milfoil Achillea millefolium
Milkweed  Asclepias spp.
Milkvetch Astragalus spp.
Mistletoe (Berries) Phoradendron serotinum
Mock Orange Philadelphus coronarius
Monkshood  (All Parts) Aconitum uncinatum
Moonseed Menisermum canadense
Morning Glory   (Seeds) Ipomoea sp.
Mother-in-law's Tongue Sanservia marginata
Myoporum  Myoporum spp.

flower

Narcissus/Jonquil Bulbs) Narcissus sp.
Nightshades/Jerusalem Cherry/Potato Horse Nettle/ Buffalo Bur  (All Parts) Solanum spp.
Nephthytis/ Arrowhead Vine  (All Parts) Synogonium podophyllum albolineatum
Nutmeg Myristica fragans

flower

Oak Quercus spp.
Oleander (Leaves, Twigs, Flowers) Nerium oleander
Orange Sneezeweed  Helenium hoopesii
Ornithogalum  Ornithogalum spp.
Orpine  Sedum purpureum
Oyster Plant  Rhoeo spathacea

flower

Pasqueflower Anemone spp.
Pawpaw  Asimina triloba
Paper-flowers Psilostrophe spp
Parlor Ivy(All Parts) Philodendron cordatum
Peach (Leaves, Twigs & Seeds) Prunus mei
Pencil Tree  Euphorbia tirucalli
Pepper Face  Peperomia obtusifolia
Pepper Vine  Ampelopsis spp.
Pernettya  Pernettya spp.
Persian Violet  Cyclamen persicum
Peruvian Lily  Alstroemeria spp.
Periwinkle  Vinca sp.
Perilla Mint/Beef-Steak Plant   Perilla frutescens
Peyote Lophophora williamsii
Pigweed Amaranthus spp.
Pingue/Colorado Rubberweed  Hymenoxys richardsonii
Philodendron(Leaves, Juices) Philodendron sp.
Plum  (Leaves, Twigs & Seeds)
Poison Ivy (All Parts even the Pollen) Rhus toxicodendron
Poison Hemlock Conium maculatum
Poison Sumac Toxicodendron vernix
Poison Oak Toxicodendron diversiloba
Poinsettia (Sap, Flowers & Leaves) Euphorbia pulcherrima
Pokeweed/Inkberry  (All Parts) Phytolacca americana
Ponderosa Pine  Pinus ponderosa
Poppy (All Parts except the Seed) Papaver somnifera
Potato  (Sprouts,Green Parts) Solanum tuberosum
Pothos (All Parts) Scindapsus aureus
Prickly Pear Cactus Opuntia spp.
Prickly Copper-weed  Oxytenia acerosa
Prickly Poppy/Mexican Poppy  Argemone mexicana
Pride of Barbados Caesalpinia spp.
Privet Ligustrum sp.

flower

Queen's Delight  Stillingia sylvatica
Queen Anne's Lace Daucus carota

flower

Rain lily  Zephyranthes atamasco
Ragweed  (Pollen) Ambrosia sp.
Rattlebox/Purple Sesbane Daubentonia punicea
Rayless Goldenrod/Burroweed  Haplopappus heterophyllus
Red Baneberry Actea rubra
Red Maple Acer rubrum
Red Princess (All Parts) Philodendron hastatum
Red Sage (Green Berries) Lantana camara
Rhododendron  (All Parts) Rhododendron sp.
Rhubarb (Leaf Blades) Rheum raponticum
Rosary Pea  (Seeds) Abrus precatorius
Rose Bay Rhododendron maximum
Rubber Tree  (Sap) Ficus elastica
Rue  Ruta graveolens

flower

Sacahuista/Beargrass Nolina texana
Saddleleaf Philodendron (All Parts) Selloum
Sago Palm Cycas revoluta
Scootberry Streptopus spp.
Scotch Broom Cytisus scoparius
Sedum  (All Parts) Sedum
Sensitive Fern  Onoclea sensibis
Silverling/Baccharis/Yerba-de-pasmo  Baccharis spp
Skunk Cabbage Symplocarpus foetidus
Snake Plant  Sansevieria trifasciata
Snakeberry  Actaea spp.
Sneezeweed Helenium microcephalum
Snowdrops Galanthus elwesii
Snow-On-The-Mountain (All Parts) Euphorbia marginata
Soapberry  Sapindus sp.
Solomon's Seal Polygonatum spp.
Sorghum/Sudan grass/Kafir, Durras/Milo/Broomcorn/Schrock Sorghum spp.
Sorrel/Sour Dock  Rumex acetosa
Spathe flower  Spathiphyllum spp.
Split Leaf Philodendron  (All Parts) Monstera deliciosa
Spurge Laurel Daphne laureola
Star of Bethlehem  (Leaves, Stems, Berries & Roots) Ornithogalum umbellatum
Starleaf  Schefflera spp.
Stinging Nettle Urtica spp.
St.John's Wort /Goatweed/Klamath Weed (Leaves) Hypericum perforatum
Sunburned Potatoes Solanum tuberosum
Spurge  Euphorbia maculata
Sweet Clover/White/Yellow  Melilotus spp.
Sweet Pea/Tangier Pea/ Everlasting Pea/Caley Pea/Singletary Pea  (Seeds, Pods) Lathyrus odoratus
Swiss-Cheese Plant/Ceriman/ Split-leaf Philodendron  (Leaves) Monstera deliciosa ceriman

flower

Tall Buttercup Ranunculu acris
Tansy Tanacetun vulgare
Tansy Ragwort  Senecio jacobaea
Thorn Apple/Angel's Trumpet  (All Parts) Datura innoxia
Tobacco/Tree Tobacco Nicotiana spp.
Tomato (Green Parts) Lycopersicon esculentum
Trillium Trillium sp.
Tuberous Begonia  Begonia semperflorens-cultorum, B. X tuberhybrida
Trumpet Flower  Solandra spp.
Tulip   (Bulbs)Tulipa

flower

Umbrella Plant  (All Parts) Cyperus alternifolius

flower

Virginia Creeper 
Vetch/Hairy Vetch/Narrow-leaved Vetch/Purple Vetch/Broad Beans  Vicia spp. Vinca Catharanthus roseus
Viper's Bugloss  Echium spp.
Virgin's Bower Clematis spp.
Virginia Creeper  Parthenocissus quinquefolia

flower

Wallflower  Cheiranthus cheiri
Water Hemlock  Cicuta spp
Weeping Fig  Ficus benjamina
Western Yellow Pine  Pinus ponderosa
White Hellebore Veratrum album
White Snakeroot Eupatorium rugosum
Wild Cherry Prunus virginiana
Wild Licorice Glycyrrhiza lepidota
Winter Cress Barbarea vulgaris
Wisteria  (Seeds, Pods) Wisteria sp.
Wormseed Chenopodium ambrosioides
Wormwood Artemisia absinthium

flower

Yellow Star Thistle/Yellow Knapweed Centaurea solstitialis
Yellow Jesamine/Evening Trumpet Flower/Carolina Jessamine Gelsemium sempervirens
Yellow Oleander   (All Parts) Thevetia peruviana
Yew   (Berries, Seeds, Needles, Bark & Foliage) Taxus canadensis

flower

Zephyr Lily  Zephyranthes atamasco
Zulu Potato Bowiea volubilis



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Thursday, January 28, 1999




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