§ Toxic plants · ASPCA · Checked Oct 2026
Plants toxic to cats and dogs
230 plants the ASPCA Animal Poison Control Center lists as toxic to cats or dogs, each with the signs to watch for and a severity rating from Plant Smart. Every plant has its own page.
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§ 010 · The list
Every plant, A to Z
| Plant | Cats | Dogs | Severity |
|---|---|---|---|
| Aloe vera Aloe vera | Toxic | Toxic | Mild |
| Amaryllis Amaryllis spp. | Toxic | Toxic | Moderate |
| American bittersweet Celastrus scandens | Toxic | Toxic | Severe |
| American holly Ilex opaca | Toxic | Toxic | Mild |
| American mistletoe Phoradendron flavescens | Toxic | Toxic | Moderate |
| Apple Malus sylvestrus | Toxic | Toxic | Severe |
| Apples Malus spp. | Toxic | Toxic | Severe |
| Asparagus Asparagus spp. | Toxic | Toxic | Moderate |
| Aspen fleabane Erigeron speciosus | Toxic | Toxic | Moderate |
| Australian umbrella tree Schefflera actinophylla | Toxic | Toxic | Mild |
| Autumn crocus Colchicum autumnale | Toxic | Toxic | Critical |
| Balsam Clusia major | Toxic | Toxic | Moderate |
| Bay laurel Laurus nobilis | Toxic | Toxic | Severe |
| Be-still tree Thevetia peruviana | Toxic | Toxic | Mild |
| Begonias Begonia spp. | Toxic | Toxic | Severe |
| Bitter orange Citrus aurantium | Toxic | Toxic | Mild |
| Bittersweet nightshade Solanum dulcamara | Toxic | Toxic | Mild |
| Black cherry Prunus serotina | Toxic | Toxic | Severe |
| Black locust Robinia pseudoacacia | Toxic | Toxic | Severe |
| Black nightshade Solanum nigrum | Toxic | Toxic | Critical |
| Blue iris Iris spuria | Toxic | Toxic | Mild |
| Borage Borago officinalis | Toxic | Toxic | Mild |
| Boxwood Buxus spp. | Toxic | Toxic | Critical |
| Broad-leaved sweet pea Lathyrus latifolius | Toxic | Toxic | Critical |
| Brown-top stringybark Eucalyptus obliqua | Toxic | Toxic | Mild |
| Buckeyes Aesculus spp. | Toxic | Toxic | Severe |
| Bullwort Ammi majus | Toxic | Toxic | Mild |
| Bush lilies Clivia spp. | Toxic | Toxic | Severe |
| Buttercups Ranunculus spp. | Toxic | Toxic | Severe |
| Butterfly milkweed Asclepias tuberosa | Toxic | Toxic | Critical |
| Caladium Caladium spp. | Toxic | Toxic | Mild |
| Calamondin Calamansi | Toxic | Toxic | Mild |
| Calla lily Zantedeschia aethiopica | Toxic | Toxic | Mild |
| Cannabis Cannabis sativa | Toxic | Toxic | Critical |
| Cape-ivy Senecio mikanioides | Toxic | Toxic | Severe |
| Caraway Carum carvi | Toxic | Toxic | Mild |
| Cardboard cycad Zamia furfuracea | Toxic | Toxic | Critical |
| Cardinal flower Lobelia cardinalis | Toxic | Toxic | Moderate |
| Carolina horsenettle Solanum carolinense | Toxic | Toxic | Critical |
| Castor bean Ricinus communis | Toxic | Toxic | Critical |
| Catnip Nepeta cataria | Toxic | — | Moderate |
| Chamomile Anthemis nobilis | Toxic | Toxic | Moderate |
| Cherry laurel Prunus laurocerasus | Toxic | Toxic | Severe |
| Chinaberry Melia azedarach | Toxic | Toxic | Critical |
| Chinese banyan Ficus microcarpa | Toxic | Toxic | Critical |
| Chinese evergreen Aglaonema modestum | Toxic | Toxic | Mild |
| Chives Allium schoenoprasum | Toxic | Toxic | Critical |
| Christmas-rose Helleborus niger | Toxic | Toxic | Moderate |
| Chrysanthemums Chrysanthemum spp. | Toxic | Toxic | Mild |
| Clematis and leatherflowers Clematis spp. | Toxic | Toxic | Mild |
| Common bird-of-paradise flower Strelitzia reginae | Toxic | Toxic | Mild |
| Common buckwheat Fagopyrum spp. | Toxic | Toxic | Mild |
| Common cowparsnip Heracleum maximum | Toxic | Toxic | Mild |
| Common gardenia Gardenia jasminoides | Toxic | Toxic | Mild |
| Common groundsel Senecio vulgaris | Toxic | Toxic | Severe |
| Common hops Humulus lupulus | Toxic | Toxic | Critical |
| Common ivy Hedera helix | Toxic | Toxic | Moderate |
| Common lantana Lantana camara | Toxic | Toxic | Critical |
| Common lavender Lavendula angustifolia | Toxic | Toxic | Moderate |
| Common onion Allium cepa | Toxic | Toxic | Critical |
| Common peony Paeonia officinalis | Toxic | Toxic | Mild |
| Common privet Ligustrum vulgare | Toxic | Toxic | Moderate |
| Common purslane Portulaca oleracea | Toxic | Toxic | Critical |
| Common St. John's-wort Hypericum perforatum | Toxic | Toxic | Mild |
| Common yarrow Achillea millefolium | Toxic | Toxic | Moderate |
| Coontie Zamia integrifolia | Toxic | Toxic | Critical |
| Cornstalk dracaena Dracaena deremensis | Toxic | Toxic | Severe |
| Cuckoo-pint Arum maculatum | Toxic | Toxic | Mild |
| Daffodils Narcissus spp. | Toxic | Toxic | Severe |
| Dahlias Dahlia spp. | Toxic | Toxic | Moderate |
| Daylilies Hemerocallis spp. | Toxic | — | Critical |
| Desert rose Adenium obesum | Toxic | Toxic | Severe |
| Devil's walkingstick Aralia spinosa | Toxic | Toxic | Mild |
| Devil's-apple Solanum linnaeanum | Toxic | Toxic | Moderate |
| Docks Rumex spp. | Toxic | Toxic | Critical |
| Dogbanes Apocynum spp. | Toxic | Toxic | Moderate |
| Dogfennel Eupatorium capillifolium | Toxic | Toxic | Mild |
| Doghobble Leucothoe spp. | Toxic | Toxic | Critical |
| Dracaena godseffiana Dracaena godseffiana | Toxic | Toxic | Moderate |
| Dragon trees Dracaena spp. | Toxic | Toxic | Severe |
| Dragon-tree Dracaena draco | Toxic | Toxic | Moderate |
| Dumb canes Dieffenbachia amoena | Toxic | Toxic | Mild |
| Easter lily Lilium longiflorum | Toxic | — | Critical |
| Eastern black walnut Juglans nigra | Toxic | Toxic | Severe |
| Eastern skunk cabbage Symplocarpus foetidus | Toxic | Toxic | Mild |
| Eggplant Solanum melongena | Toxic | Toxic | Moderate |
| Elephant ears Colocasia spp. | Toxic | Toxic | Mild |
| Elephant's-ears Alocasia spp. | Toxic | Toxic | Mild |
| European holly Ilex aquifolium | Toxic | Toxic | Mild |
| European lily of the valley Convallaria majalis | Toxic | Toxic | Severe |
| Fiddle-leaf fig Ficus lyrata | Toxic | Toxic | Critical |
| Figs Ficus spp. | Toxic | Toxic | Mild |
| Fire stick Euphorbia tirucalli | Toxic | Toxic | Moderate |
| Flame lily Gloriosa superba | Toxic | Toxic | Critical |
| Flamingo flower Anthurium scherzerianum | Toxic | Toxic | Mild |
| Garden geranium Pelargonium x hortorum | Toxic | Toxic | Moderate |
| Garden parsley Petroselinum crispum | Toxic | Toxic | Mild |
| Garlic Allium sativum | Toxic | Toxic | Critical |
| Geraniums and storksbills Pelargonium spp. | Toxic | Toxic | Moderate |
| Gladioli Gladiolus spp. | Toxic | Toxic | Mild |
| Golden pothos Epipremnum aureum | Toxic | Toxic | Mild |
| Goosefoot-plant Syngonium podophyllum | Toxic | Toxic | Mild |
| Grapefruit Citrus paradisi | Toxic | Toxic | Mild |
| Groundsels Senecio spp. | Toxic | Toxic | Critical |
| Heart-leaf philodendron Philodendron cordatum | Toxic | Toxic | Mild |
| Heavenly bamboo Nandina domestica | Toxic | Toxic | Critical |
| Hellebores and lenten roses Helleborus spp. | Toxic | Toxic | Moderate |
| Hemp dogbane Apocynum cannabinum | Toxic | Toxic | Moderate |
| Hollies Ilex spp. | Toxic | Toxic | Mild |
| Horse-chestnut Aesculus hippocastanum | Toxic | Toxic | Severe |
| Hyacinth Hyacinthus orientalis | Toxic | Toxic | Moderate |
| Hyacinth subfamily Hyacinthus spp. | Toxic | Toxic | Moderate |
| Hydrangeas Hydrangea spp. | Toxic | Toxic | Moderate |
| Indian borage Coleus amboinicus | Toxic | Toxic | Moderate |
| Irises Iris spp. | Toxic | Toxic | Mild |
| Ivies Hedera spp. | Toxic | Toxic | Moderate |
| Jack-in-the-pulpit Arisaema triphyllum | Toxic | Toxic | Mild |
| Jade plant Crassula argentea | Toxic | Toxic | Mild |
| Japanese andromeda Pieris japonica | Toxic | Toxic | Critical |
| Japanese yew Taxus cuspidata | Toxic | Toxic | Critical |
| Jerusalem cherry Solanum pseudocapsicum | Toxic | Toxic | Severe |
| Jerusalem oak Chenopodium botrys | Toxic | Toxic | Critical |
| Jonquil Narcissus jonquilla | Toxic | Toxic | Severe |
| Kalanchoes Kalanchoe spp. | Toxic | Toxic | Moderate |
| Key lime Citrus aurantifolia | Toxic | Toxic | Mild |
| Kumquat Citrus mitis | Toxic | Toxic | Severe |
| Kusamaki Podocarpus macrophyllus | Toxic | Toxic | Mild |
| Laburnum Laburnum spp. | — | Toxic | Severe |
| Lace aralia Polyscias guilfoylei | Toxic | Toxic | Moderate |
| Larkspurs Delphinium spp. | Toxic | Toxic | Critical |
| Leafy mistletoes Phoradendron spp. | Toxic | Toxic | Moderate |
| Lemon Citrus limonia | Toxic | Toxic | Severe |
| Lemon grass Cymbopogon citratus | Toxic | Toxic | Severe |
| Lemon verbena Aloysia triphylla | Toxic | Toxic | Moderate |
| Lobelias Lobelia spp. | Toxic | Toxic | Moderate |
| Locust trees Robinia spp. | Toxic | Toxic | Severe |
| Lovage Levisticum officinale | Toxic | Toxic | Mild |
| Lucky bamboo Dracaena sanderiana | Toxic | Toxic | Moderate |
| Lyonias Lyonia spp. | Toxic | Toxic | Critical |
| Macadamia tree Macadamia integrifolia | Toxic | Toxic | Severe |
| Madagascar dragon-tree Dracaena marginata | Toxic | Toxic | Severe |
| Madagascar periwinkle Vinca rosea | Toxic | Toxic | Critical |
| Mayapple Podophyllum peltatum | Toxic | Toxic | Critical |
| Mexican tea Chenopodium ambrosioides | Toxic | Toxic | Critical |
| Milkweeds Asclepias spp. | Toxic | Toxic | Critical |
| Mints Mentha spp. | Toxic | Toxic | Mild |
| Monstera Monstera deliciosa | Toxic | Toxic | Mild |
| Moonflower Ipomoea alba | Toxic | Toxic | Moderate |
| Morning-glories Ipomoea spp. | Toxic | Toxic | Moderate |
| Mountain laurel Kalmia latifolia | Toxic | Toxic | Critical |
| Mountain-laurels Kalmia spp. | Toxic | Toxic | Critical |
| Namaqua fig Ficus cordata | Toxic | Toxic | Severe |
| New Zealand cabbage tree Cordyline australis | Toxic | Toxic | Moderate |
| Nightshades Solanum spp. | Toxic | Toxic | Critical |
| Oleander Nerium oleander | Toxic | Toxic | Critical |
| Oregano Origanum vulgare | Toxic | Toxic | Mild |
| Palestine arum Arum palaestinum | Toxic | Toxic | Mild |
| Peace lily Spathiphyllum spp. | Toxic | Toxic | Mild |
| Peach Prunus persica | Toxic | Toxic | Severe |
| Peacock flower Caesalpinia pulcherrima | Toxic | Toxic | Mild |
| Pennyroyal Mentha pulegium | Toxic | Toxic | Mild |
| Periwinkles Vinca spp. | Toxic | Toxic | Critical |
| Philodendrons Philodendron spp. | Toxic | Toxic | Mild |
| Pinks Dianthus spp. | Toxic | Toxic | Mild |
| Poinsettia Euphorbia pulcherrima | Toxic | Toxic | Moderate |
| Poison hemlock Conium maculatum | Toxic | Toxic | Critical |
| Potato Solanum tuberosum | Toxic | Toxic | Moderate |
| Precatory bean Abrus precatorius | Toxic | Toxic | Critical |
| Primrose Primula vulgaris | Toxic | Toxic | Mild |
| Primroses Primula spp. | Toxic | Toxic | Mild |
| Privets Ligustrum spp. | Toxic | Toxic | Critical |
| Purple foxglove Digitalis purpurea | Toxic | Toxic | Critical |
| Raintrees Brunfelsia spp. | Toxic | Toxic | Severe |
| Ranger buttons Sphenosciadium capitellatum | Toxic | Toxic | Mild |
| Rangpur Rangpur | Toxic | Toxic | Mild |
| Rhododendrons and azaleas Rhododendron spp. | Toxic | Toxic | Critical |
| Rhubarb Rheum rhabarbarium | Toxic | Toxic | Severe |
| Rubber plant Ficus elastica | Toxic | Toxic | Severe |
| Sago cycad Cycas revoluta | Toxic | Toxic | Critical |
| Satin pothos Scindapsus pictus | Toxic | Toxic | Mild |
| Scented hosta Hosta plantaginea | Toxic | Toxic | Mild |
| Sheep laurel Kalmia angustifolia | Toxic | Toxic | Critical |
| Showy baby's-breath Gypsophila elegans | Toxic | Toxic | Mild |
| Showy Japanese lily Lilium speciosum | Toxic | — | Critical |
| Silver dollar plant Crassula arborescens | Toxic | Toxic | Mild |
| Small-leaf spiderwort Tradescantia fluminensis | Toxic | Toxic | Mild |
| Snake plant Sansevieria trifasciata | Toxic | Toxic | Mild |
| South American amaryllis Hippeastrum spp. | Toxic | Toxic | Severe |
| Sowbread Cyclamen spp. | Toxic | Toxic | Critical |
| Spindles Euonymus spp. | Toxic | Toxic | Moderate |
| Sprenger's asparagus Asparagus densiflorus | Toxic | Toxic | Moderate |
| Springparsleys Cymopterus spp. | Toxic | Toxic | Mild |
| Spurges Euphorbia spp. | Toxic | Toxic | Moderate |
| St. John's worts Hypericum spp. | Toxic | Toxic | Mild |
| Stinking chamomile Anthemis cotula | Toxic | Toxic | Moderate |
| Swamp laurel Kalmia polifolia | Toxic | Toxic | Critical |
| Sweet marjoram Origanum majorana | Toxic | Toxic | Mild |
| Sweet orange Citrus sinensis | Toxic | Toxic | Mild |
| Sweet-william Dianthus barbatus | Toxic | Toxic | Mild |
| Taro Colocasia esculenta | Toxic | Toxic | Mild |
| Tarragon Artemisia dracunculus | Toxic | Toxic | Mild |
| Ti Cordyline terminalis | Toxic | Toxic | Moderate |
| Tiger lily Lilium tigrinum | Toxic | — | Critical |
| Tomato plant Lycopersicon spp. | Toxic | Toxic | Moderate |
| Tree philodendron Philodendron bipinnatifidum | Toxic | Toxic | Mild |
| Tree tobacco Nicotiana glauca | Toxic | Toxic | Critical |
| True lilies Lilium spp. | Toxic | — | Critical |
| Tuftroot Dieffenbachia picta | Toxic | Toxic | Mild |
| Tulip Tulipa spp. | Toxic | Toxic | Severe |
| Umbrella trees Schefflera spp. | Toxic | Toxic | Mild |
| Virginia spiderwort Tradescantia virginiana | Toxic | Toxic | Mild |
| Wahoo Euonymus atropurpurea | Toxic | Toxic | Moderate |
| Walnuts Juglans spp. | — | Toxic | Severe |
| Water hemlock Cicuta maculata | Toxic | Toxic | Critical |
| Water hemlocks Cicuta spp. | Toxic | Toxic | Critical |
| Watercress Nasturtium officinale | Toxic | Toxic | Mild |
| Wax begonia Begonia semperflorens | Toxic | Toxic | Severe |
| Wax-leaf ligustrum Ligustrum japonicum | Toxic | Toxic | Critical |
| Weeping fig Ficus benjamina | Toxic | Toxic | Moderate |
| Western burning bush Euonymus occidentalis | Toxic | Toxic | Moderate |
| Western lily Lilium occidentale | Toxic | — | Severe |
| Wild hydrangea Hydrangea arborescens | Toxic | Toxic | Moderate |
| Wild leek Allium ampeloprasum | Toxic | Toxic | Critical |
| Wisterias Wisteria spp. | Toxic | Toxic | Mild |
| Wood lily Lilium philadelphicum | Toxic | — | Severe |
| Woodsorrels Oxalis spp. | Toxic | Toxic | Critical |
| Wormwoods and sagebrushes Artemisia spp. | Toxic | Toxic | Moderate |
| Yellow bird-of-paradise shrub Erythrostemon gilliesii | Toxic | Toxic | Severe |
| Yews Taxus spp. | Toxic | Toxic | Critical |
| Yuccas Yucca spp. | Toxic | Toxic | Critical |
§ 020 · Questions
Questions about toxic plants
Which plants are most toxic to cats?
Plant Smart rates 60 plants Critical, its highest level, including Precatory bean, Wild leek, Common onion, Garlic, Chives and Milkweeds. Lilies are the best-known danger to cats: ASPCA lists true lilies and daylilies as causing kidney failure.
Where does this list come from?
From the ASPCA Animal Poison Control Center's plant list, by way of Plant Smart, which adds a four-level severity rating. ASPCA is the authority; the severity scale is Plant Smart's.
Is a plant missing from this list safe?
Not necessarily. This list covers plants ASPCA names as toxic. A plant can be missing because nobody has reported a case. Call your vet if your pet eats any plant and seems unwell.
What should I do if my pet ate a toxic plant?
Call your vet or a pet poison hotline right away: the ASPCA Animal Poison Control Center at (888) 426-4435, or Pet Poison Helpline at (855) 764-7661. Both charge a fee.