Poison Plant List

PLANT CARE

Poison Plant List

In the Case of suspected plant poisoning please call:

Ohio Poison Hotline

800-222-1222

Toxicity Class (third column in table below)

  1. Major Toxicity: These plants may cause serious illness or death. If ingested, immediately call the Poison Control Center or your doctor.
  2. Minor Toxicity: Ingestion of these plants may cause minor illnesses such as vomiting or diarrhea. If ingested, call the Poison Control Center or your doctor.
  3. Oxalates: The juice or sap of these plants contains oxalate crystals. These needle-shaped crystals can irritate the skin, mouth, tongue, and throat, resulting in throat swelling, breathing difficulties, burning pain, and stomach upset. Call the Poison Control Center or your doctor if any of these symptoms appear following ingestion of plants.
  4. Dermatitis: The juice, sap, or thorns of these plants may cause a skin rash or irritation. Wash the affected area of skin with soap and water as soon as possible after contact. The rashes may be very serious and painful. Call the Poison Control Center or your doctor if symptoms appear following contact with the plants.
  5. Animal toxicity: Pets, especially cats and dogs, frequently ingest plants. If a plant is known to be hazardous to humans, it will probably be toxic for animals as well.
Common NameScientific NameToxicity Class
AchilleaAchillea millefolium2,4
AconiteAconitum spp.1
African boxwoodMyrsine africana2
African lilyAgapanthus spp.2,4
AgapanthusAgapanthus spp.2,4
AgaveAgave spp.2,3,4
AglaonemaAglaonema spp.3,4
AilanthusAilanthus altissima2,4
AlderAlnus spp.4
AlliumAllium spp.2
Almond (seeds)Prunus spp.1
AlocasiaAlocasia spp.3,4
AlstroemeriaAlstroemeria spp.2,4
AmaryllisAmaryllis belladonna2,4
AmaryllisHippeastrum spp.2
AnemoneAnemone spp.2,4
Angel’s trumpetBrugmansia spp.1
AnthuriumAnthurium spp.3,4
Apple (seeds)Malus spp.1
Apricot (seeds)Prunus spp.1
Aralia, MingPolyscias spp.2,4
ArborvitaeThuja spp.2,4
Arrowhead plantSyngonium podophyllum3
ArumArum spp.3,4
AshFraxinus spp.4
Asparagus, GardenAsparagus officinalis4
Asparagus, SprengerAsparagus densiflorus4
AsterAster spp.4
Aucuba, JapaneseAucuba japonica2
Autumn crocusColchicum autumnale1,4
AzaleaRhododendron spp.1
Baby’s breathGypsophila paniculata4
Balsam firAbies balsamea4
BarberryBerberis spp.2,4
BegoniaBegonia spp. (some spp.)2,3
BelladonnaAtropa belladonna1
Belladonna lilyAmaryllis belladonna2,4
BermudagrassCynodon dactylon4
Birch treeBetula spp.2,4
Bird-of-paradise shrubCaesalpina gilliesii2
Bishop’s weedAmmi majus4
BittersweetCelastrus scandens2
Black callaArum spp.3,4
Black cherry (seeds)Prunus spp.1
Black henbaneHyoscyamus niger1
Black locust (seeds)Robinia pseudoacacia1
Black nightshadeSolanum spp.1
Blanket flowerGaillardia spp.4
Bleeding heartDicentra spp.4
Blood lilyHaemanthus spp.2,4
Blue gumEucalyptus spp.2,4
Boston ivyParthenocissus spp.3,4
Bottle treeBrachychiton populneus4
Bougainvillea (thorns)Bougainvillea spp.4
BoxwoodBuxus sempervirens2,4
Brazilian pepper treeSchinus terebinthifolius2,4
BroomCytisus spp.2
BuckeyeAesculus spp.2
BuckthornRhamnus spp.2,4
Burning bushEuonymus spp.2
Bushman’s poisonAcokanthera spp.1
ButtercupRanunculus spp.2,4
Butterfly weedAsclepias spp.2,4
Cactus (thorns and sap)Cactus spp.4
Cajeput treeMelaleuca quinquenervia4
CaladiumCaladium bicolor3,4
California bayUmbellularia californica4
California buckeyeAesculus spp.2
California laurelUmbellularia californica4
California pepper treeSchinus molle4
Calla, BlackArum spp.3,4
Calla lilyZantedeschia aethiopica3,4
Camphor treeCinnamomum camphora2
Candytuft, EvergreenIberis sempervirens4
Cape plumbagoPlumbago auriculata4
Cardinal flowerLobelia spp.1,4
CarnationDianthus caryophyllus2,4
Carolina jessamineGelsemium sempervirens1,4
Carolina laurel cherryPrunus caroliniana1
Castor beanRicinus communis1
Century plantAgave spp.2,3,4
CestrumCestrum spp.1
ChamomileChamaemelum nobile4
Checkered lilyFritillaria meleagris1
Chenille plantAcalypha spp.2,4
Cherry (seeds)Prunus spp.1
ChinaberryMelia azedarach1
Chinese evergreenAglaonema spp.3,4
Chinese lanternPhysalis spp.1
Chinese tallow treeSapium sebiferum4
ChokecherryPrunus virginiana1
Christmas roseHelleborus spp.1,4
ChrysanthemumChrysanthemum spp.2,4
CinerariaSenecio hybridus2,4
ClematisClematis spp.2,4
Climbing lilyGloriosa spp.1
CliviaClivia spp.2,4
Coast redwoodSequoia sempervirens2,4
Coffee plantCoffea arabica2
CoffeeberryRhamnus spp.2,4
ColumbineAquilegia spp.2
CopperleafAcalypha spp.2,4
Coral plantJatropha spp.2,4
Coral treeErythrina spp.1
CoralberrySymphoricarpos spp.2
CotoneasterCotoneaster spp.2
Crabapple (seeds)Malus spp.1
Creeping CharlieGlechoma hederacea2
Crinum lilyCrinum spp.2,4
Crocus, AutumnColchicum autumnale1,4
CrotonCodiaeum variegatum2,4
Crown of thornsEuphorbia spp.2,4
CyclamenCyclamen spp.2,4
Daffodil (bulb)Narcissus spp.2,4
DaisyChrysanthemum spp.2,4
DaphneDaphne spp.1
Deadly nightshadeAtropa belladonna1
Deadly nightshadeHyoscyamus niger1
Deadly nightshadeSolanum spp.1
Death camasZigadenus spp.1
DelphiniumDelphinium spp.1
Desert bluebellsPhacelia spp.4
DichondraDichondra micrantha4
DieffenbachiaDieffenbachia spp.3
DogwoodCornus spp.4
Dumb caneDieffenbachia spp.3
Dusty millerSenecio spp. (some spp.)2,4
Dutch irisIris spp.2,4
EchiumEchium vulgare1,4
Elderberry (ripe fruit is nontoxic)Sambucus spp.1
Elephant’s earAlocasia spp.3,4
Elephant’s earColocasia spp.3,4
Elephant’s earXanthosoma spp.3,4
Elm treeUlmus spp.4
English daisyBellis perennis4
English ivyHedera spp.2,4
English laurelPrunus laurocerasus1
English yew (seeds)Taxus baccata1
EucalyptusEucalyptus spp.2,4
EuonymusEuonymus spp.2
EuphorbiaEuphorbia spp.2,4
European mistletoeViscum album1
Evergreen candytuftIberis sempervirens4
False heatherCuphea hyssopifolia4
False Queen Anne’s laceAmmi majus4
Fescue (grass)Festuca spp.4
FigFicus carica and Ficus spp.4
Fig, WeepingFicus spp.4
Fig, Fiddle-leafFicus lyrata4
Fiddle-leaf figFicus lyrata4
Fir, BalsamAbies balsamea4
FiretailAcalypha spp.2,4
FirethornPyracantha spp.2,4
Fishtail palmCaryota spp.3,4
FlaxLinum usitatissimum4
FleabaneErigeron spp.4
Flowering tobaccoNicotiana glauca1
Four-o’clockMirabilis jalapa2,4
FoxgloveDigitalis purpurea1
FrangipaniPlumeria rubra4
Garden asparagusAsparagus officinalis4
GinkgoGinkgo biloba4
GladiolusGladiolus spp.2,4
Glory lilyGloriosa spp.1
Goldenchain treeLaburnum anagyroides2
Gopher plantEuphorbia spp.2,4
Grape ivyCissus rhombifolia4
GrevilleaGrevillea spp.4
GroundcherryPhysalis spp.1
Ground ivyGlechoma hederacea2
Guernsey lilyNerine spp.2,4
Gum, BlueEucalyptus spp.2,4
Heart leafPhilodendron spp.3,4
HeatherCalluna vulgaris1
HeliotropeHeliotropum arborescens1
HelleboreHelleborus spp.1,4
Hemlock, PoisonConium maculatum1
Hemlock, WaterCicuta spp.1
Henbane, BlackHyoscyamus niger1
Holly (berries)Ilex spp.2
HollyhockAlcea rosea4
Honey bushMelianthus spp.1
HorsechestnutAesculus spp.2
HyacinthHyacinthus orientalis2,4
HydrangeaHydrangea spp.1,4
Iceland poppyPapaver nudicaule3,4
Indian currantSymphoricarpos spp.2
Indian turnipArisaema triphyllum3,4
IrisIris spp.2,4
Italian arumArum spp.3,4
IvyHedera spp.2,4
Ivy, BostonParthenocissus spp.3,4
Ivy, EnglishHedera spp.2,4
Ivy, GrapeCissus rhombifolia4
Ivy, GroundGlechoma hederacea2
Jack-in-the-pulpitArisaema triphyllum3,4
Jade plantCrassula argentea2,4
Japanese aucubaAucuba japonica2
Japanese pierisPieris japonica1
Japanese yew (seeds)Taxus spp.1
JatrophaJatropha spp.2,4
Jequirity beanAbrus precatorius1
Jerusalem cherrySolanum pseudocapsicum1
JessamineCestrum spp.1
Jessamine, CarolinaGelsemium sempervirens1,4
Jimson weedBrugmansia spp.1
Jonquil (bulb)Narcissus spp.2,4
JuniperJuniperus spp.2
Kaffir lilyClivia spp.2,4
LaburnumLaburnum anagyroides2
Lady slipper orchidCypripedium spp.4
LantanaLantana camara1
LarkspurDelphinium spp.1
Laurel, CaliforniaUmbellularia californica4
Laurel cherryPrunus caroliniana1
Laurel, EnglishPrunus laurocerasus1
Laurel, MountainKalmia latifolia2
Laurel, New ZealandCorynocarpus laevigata2
Lenten roseHelleborus spp.1,4
LigustrumLigustrum spp.2,4
LilyLilium spp. (some spp.)2,4
Lily, AfricanAgapanthus spp.2,4
Lily, BelladonnaAmaryllis belladonna2,4
Lily, BloodHaemanthus spp.2,4
Lily, CallaZantedeschia aethiopica3,4
Lily, CheckeredFritillaria meleagris1
Lily, ClimbingGloriosa spp.1
Lily, CrinumCrinum spp.2,4
Lily, GloryGloriosa spp.1
Lily, GuernseyNerine spp.2,4
Lily, KaffirClivia spp.2,4
Lily, PeruvianAlstroemeria spp.2,4
Lily, SpiderLycoris spp.2
Lily, SpiderHymenocallis spp.2,4
Lily-of-the-NileAgapanthus spp.2,4
Lily-of-the-valleyConvallaria majalis1,4
LobeliaLobelia spp.1,4
Locust, Black (seeds)Robinia pseudoacacia1
Loquat (seeds)Eriobotrya japonica1
Love-in-a-mistNigella damascena2
Love-lies-bleedingAmaranthus caudatus1
LupineLupinus spp.1
Maidenhair treeGinkgo biloba4
MapleAcer spp.4
Marguerite daisyChrysanthemum spp.2,4
MarigoldTagetes spp.4
Marsh marigoldCaltha palustris2
May applePodophyllum peltatum1
Meadow saffronColchicum autumnale1,4
MilkweedAsclepias spp.2,4
Ming araliaPolyscias spp.2,4
MistletoePhoradendron spp.2,4
Mistletoe, EuropeanViscum album1
MonkshoodAconitum spp.1
Morning glory (seeds)Ipomoea spp.1
Moses-in-the-cradleRhoeo spathacea4
Mountain laurelKalmia latifolia2
MyoporumMyoporum laetum1
MyrtleMyrtus communis2
MyrtleVinca spp.1
Naked ladyAmaryllis belladonna2,4
Narcissus (bulb)Narcissus spp.2,4
Natal plumCarissa macrocarpa2
Nectarine (seeds)Prunus spp.1
NephthytisSyngonium podophyllum3
NerineNerine spp.2,4
Nettles, StingingUrtica spp.4
New Zealand laurelCorynocarpus laevigata2
Night-blooming jessamineCestrum spp.1
Nightshade, DeadlyAtropa belladonna1
Nightshade, DeadlyHyoscyamus niger1
Nightshade, Black or DeadlySolanum spp.1
Oak tree (acorns)Quercus spp.2,4
OleanderNerium oleander1,4
Oleander, YellowThevetia peruviana1,4
Onion, WildAllium spp.2
OrnithogalumOrnithogalum spp.1
Pampas grassCortaderia selloana1
Pansy (seeds)Viola spp.2
Pasque flowerAnemone spp.2,4
Peach (seeds)Prunus spp.1
Pear (seeds)Pyrus spp.1
Pencil treeEuphorbia spp.2,4
Pepper tree, BrazilianSchinus terebinthifolius2,4
Pepper tree, CaliforniaSchinus molle4
PeriwinkleVinca spp.1
Peruvian lilyAlstroemeria spp.2,4
Peruvian scillaScilla spp.1
PhilodendronPhilodendron spp.3,4
Philodendron, Split-leafMonstera deliciosa3,4
Pieris, JapanesePieris japonica1
PineappleAnanas comosus4
PinkDianthus spp.2,4
PittosporumPittosporum spp.1
Plum (seeds)Prunus spp.1
Plumbago, CapePlumbago auriculata4
PlumeriaPlumeria rubra4
PoincianaCaesalpina gilliesii2
PoinsettiaEuphorbia spp.2,4
Poison hemlockConium maculatum1
Poison oakToxicodendron diversilobum4
PokeweedPhytolacca americana2
PoppyPapaver spp.2,4
Poppy, IcelandPapaver nudicaule3,4
Potato plant (green parts)Solanum tuberosum1
PothosEpipremnum aureum3,4
Pregnant onionOrnithogalum spp.1
PrimrosePrimula spp.4
PrimulaPrimula spp.4
PrivetLigustrum spp.2,4
PyracanthaPyracantha spp.2,4
Queen Anne’s laceDaucus carota4
Queen Anne’s lace, FalseAmmi majus4
RanunculusRanunculus spp.2,4
Redwood, CoastSequoia sempervirens2,4
RhododendronRhododendron spp.1
Rhubarb (leaves)Rheum rhabarbarum3
Rosary beanAbrus precatorius1
Rosary peaAbrus precatorius1
Rubber plantFicus elastica4
RueRuta graveolens4
SagebrushArtemisia spp.4
Sago palmCycas revoluta2
Scarlet pimpernelAnagallis arvensis2,4
ScheffleraSchefflera actinophylla2,4
Scotch broomCytisus spp.2
Shasta daisyChrysanthemum maximum2,4
Silk oakGrevillea spp.4
Skunk cabbageVeratrum spp.2
Smoke bushCotinus coggygria4
Snake plantSansevieria spp.2,4
SnakesheadFritillaria meleagris1
Snow-on-the-mountainEuphorbia spp.2,4
SnowberrySymphoricarpos spp.2
SnowdropGalanthus spp.2,4
SnowflakeLeucojum spp.2,4
SpathiphyllumSpathiphyllum spp.3,4
Spider lilyLycoris spp.2
Spider lilyHymenocallis spp.2,4
Split-leaf philodendronMonstera deliciosa3,4
Sprenger asparagusAsparagus densiflorus4
SquillScilla spp.1
St. JohnswortHypericum calycinum1,4
Star-of-BethelehemOrnithogalum spp.1
Stinging nettlesUrtica spp.4
String of beadsSenecio spp. (some spp.)2,4
Sweet pea (seeds)Lathyrus odoratus2
Sweet WilliamDianthus barbatus2,4
TansyTanacetum spp.4
TaroColocasia esculenta3,4
Tassel flowerAmaranthus caudatus1
Tomato (non-fruit parts)Lycopersicon esculentum1,4
ToyonHeteromeles arbutifolia1
Tree-of-heavenAilanthus altissima2,4
Tree tobaccoNicotiana glauca1
Trumpet creeperCampsis radicans4
Trumpet vineCampsis radicans4
TuberosePolianthes tuberosa2
Tulip (bulb)Tulipa spp.2,4
Umbrella plantCyperus alternifolius2
Umbrella treeSchefflera actinophylla2,4
VincaVinca spp.1
Violet (seeds)Viola spp.2
Virginia creeperParthenocissus spp.3,4
WalnutJuglans spp.4
Wandering jewTradescantia spp.4
Water hemlockCicuta spp.1
Weeping figFicus spp.4
Wild onionAllium spp.2
WindflowerAnemone spp.2,4
WintersweetAcokanthera spp.1
WisteriaWisteria spp.2
WormwoodArtemisia spp.4
YarrowAchillea millefolium2,4
Yew, English (seeds)Taxus baccata1
Yew, Japanese (seeds)Taxus spp.1
Yew pinePodocarpus macrophyllus2

Plant lists in this database compiled by:

Ann King Filmer, Ph.D.
Director of Communications
College of Agricultural and Environmental Sciences, Dean’s Office