(=List of Dangerous Plants=)

Cats & Plants
Compiled by DannyT. Thanks, Jaime! Corrections always welcome! Please, read the Disclaimer
 

Better sure than sorry! [ check the index ]   Safe plants? [ click on me! ]

Keep deadly plants, pesticides or chemical fertilizers away from cats, especially if they like to chew on leaves as mine!
  Toxic Plants by English Name  Botanical name [ click on it! ]  Toxic Plants by English Name Botanical name [ click on it! ] 
A  Acacia 
Aconite 
Agapanthus 
Agave 
Alfalfa 
Algerian ivy 
Almond 
Alocasia 
Aloe vera 
Amaryllis 
American yew 
Ampelopsis
Acacia berlandieri 
Aconitum napellus 
Agapanthus orientalis 
Agave spp 
Medicago sativa 
Hedera canariensis 
Prunus amygdalus 
Colocasia esulenta 
Aloe vera 
Amaryllis spp 
Taxus canadensis 
Ampelopsis quinquefolia
Alsike clover 
Angel's trumpet 
Apple [seeds] 
Apricot [pits] 
Araucaria 
Arrowgrass 
Arrowhead vine 
Arum lily 
Asparagus fern 
Autumn crocus 
Avocado 
Azalea
Trifolium spp 
Datura candida 
Malus spp 
Prunus armeniaca 
Araucaria heterophylla 
Triglochin maritima 
Syngonium podophyllum 
Zantedeschia aethiopica 
Asparagus sprengeri 
Colchicum autumnale 
Persea americana 
Rhododendron spp
 B Baby's breath hahn's 
Balsam pear 
Baneberry 
Belladonna 
Bird of paradise 
Bittersweet (European) 
Bittersweet 
Black locust 
Black walnut 
Bleeding heart
Gypsophyla paniculata 
Momordica charantia 
Actaea spp 
Atropa belladonna 
Strelitzia reginae 
Solanum dulcamara 
Celastrus scandens 
Robinia pseudoacacia 
Juglans nigra 
Dicentra cucullaria
Blood Red Trumpet Vine 
Bloodroot 
Boston ivy 
Boxthorn 
Boxwood 
Bracken fern 
Buckeye 
Buckthorn 
Buttercup
Dictictis buccinatoria 
Sanguinaria canadensis 
Parthenocissus tricuspidata 
Lycium barbarum 
Buxus sempervirens 
Pteridium aquilinum 
Aesculus glabra 
Rhamnus spp 
Ranunculus spp
 C Caladium  
Calla lily  
Camphor  
Candelabra cactus  
Cardinal flowers  
Carnation  
Carolina jessamine  
Castor bean  
Ceriman  
Chenile plant  
Cherry [seeds]  
Cherry laurel  
Chinaberry  
Chinese evergreen  
Christmas rose  
Christmas berry  
Chrysanthemum  
Coleus
Caladium spp  
Zantedeschia aethiopica  
Cinnamomum camphora  
Euphorbia lactea  
Lobelia cardinalis  
Dianthus spp  
Gelsemium sempervirens  
Ricinus communis  
Monstera deliciosa  
Achillea millefolium  
Prunus spp  
Prunus laurocerasus  
Melia azedarach  
Aglaonema modestum  
Helleborus niger  
Heteromeles arbutifolia  
Chrysanthemum spp  
Coleus spp
Century plant  
Cineraria  
Clematis  
Cocklebur  
Coriaria  
Corn lily  
Corn plant  
Creeping Charlie  
Creeping fig  
Crocus (autumn)  
Croton  
Crown of thorns  
Cuban laurel 
Cut-leaved coneflower 
Cycad 
Cyclamen
Agave spp 
Senecio cruentus 
Clematis spp 
Xanthium strumarium 
Coriaria thymifolia 
Veratrum californicum Ixia 
Dracaena messengeana 
Glechoma hederacea 
Ficus pumila 
Colchicum autumnale 
Codieum variegatum 
Euphorbia milii 
Ficus retusa nitida 
Rudbeckia laciniata 
Cicas revoluta 
Cyclamen persicum
 D Daffodil 
Dahalia 
Daphne 
Datura 
Deadly nightshade 
Death camas 
Delphinium
Narcissus pseudo-narcissus  
Dahalia spp 
Daphne mezereum 
Datura stramonium 
Atropa belladonna 
Zigadenus venenosus 
Delphinium spp
Devil's backbone 
Devil's ivy 
Dieffenbachia 
Dragon tree 
Dumbcane 
Dutchman's breeches
Kalanchoe daigremontiana 
Scindapsus aureus 
Dieffenbachia spp 
Dracena draco 
Dieffenbachia picta 
Dicentra cucullaria
 E Easter lily 
Eggplant 
Elderberry 
Elephant's ear 
Emerald duke 
Emerald feather
Lilium longiflorum 
Solanum melongena 
Sambucus canadensis 
Colocasia esulenta 
Philodendron hastatum 
Asparagus setaceus
English holly 
English ivy 
English yew 
Eucalyptus 
Euonymous
Ilex aquifolium 
Hedera helix 
Taxus baccata 
Eucapliptus spp 
Euonymous japonica
 F False jessamine  
Fiddle-leaf fig  
Flax
Lycium barbarum  
Ficus lyrata  
Linum usitatissimum
Florida beauty dracena  
Four o'clock  
Foxglove
Dracaena godseffiana 
Mirabilis jalapa  
Digitals purpurea
 G Garden sorrel 
Geranium 
Glacier ivy 
Glory lily 
Golden chain tree
Rumex acetosa 
Pelargonium spp 
Hedera helix "Glacier" 
Gloriosa superba 
Laburnum spp
Golden glow 
Goldfish plant 
Gopher purge 
Ground cherry 
Ground ivy
Rudbeckia laciniata 
Columnea spp 
Euphorbia lathyris 
Physalis longifolia 
Glechoma hederacea
 H Halogeton 
Heart leaf 
Hemlock 
Henbane 
Holly 
Honeysuckle
Halogeton glomeratus 
Philodendron scandens 
Conium maculatum 
Hyoscyamus niger 
Ilex spp 
Lonicera japonica
Horsebeans 
Horsebrush 
Horse chestnut 
Hurricane plant 
Hyacinth 
Hydrangea
Vicia faba 
Tetradymia spp 
Aesculus hippocastanum 
Monstera deliciosa 
Hyacinthus spp 
Hydrangea spp
 I Indian laurel 
Indian rubber plant 
Indian tobacco
Ficus retusa nitida 
Ficus elastica decora 
Lobelia cardinalis
Indian turnip 
Iris 
Ivy
Arisaema triphyllum 
Iris spp 
Hedera spp
 J Jack-in-the-Pulpit         
Japanese Yew         
Japanese plum      
Japanese show lily         
Jasmine        
Jequirity Pea  
Arisaema triphyllum  
Taxus cuspidata  
Prunus salicina  
Lilium Speciosum  
Jasminum spp  
Abrus precatorius
Jerusalem Cherry  
Jessamine  
Jimsonweed  
Johnquil  
Johnsongrass  
Juniper
Solanum pseudocapsicum  
Cestrum spp  
Datura stramonium  
Narcissus spp  
Sorghum halepense 
Juniperus communis
 K Kaffir lily Clivia miniata Kalanchoe Kalanchoe daigremontiana
 L Laburnum 
Lantana 
Larkspur 
Laurel cherry
Laburnum spp 
Lantana spp 
Delphinium spp 
Prunus laurocerasus
Lily (all) 
Lily of the valley 
Locoweed 
Lupine
Lilium spp 
Convallaria majalis 
Oxytropis sericea 
Lupinus spp
 M Marble queen 
Marijuana 
Marsh marigold 
Matrimony vine 
Majesty 
Mayapple 
Mescal Bean 
Milkweed 
Mistletoe
Scindapsus aureus 
Cannabis sativa 
Caltha palustris 
Lycium barbarum 
Philodendron hastatum 
Podophyllum peltatum 
Sophora secundiflora 
Asclepias syriaca 
Phoradendron flavescens
Mock orange 
Monkey pod 
Monkshood 
Moonweed 
Moonseed 
Morning glory 
Mother-in-law's tongue 
Mountain laurel 
Mushrooms (fly agaric)
Prunus caroliniana 
Koelreuteria elegans 
Aconitum napellus 
Datura stramonium 
Menispermum canadense 
Ipomoea hederacea 
Sansevieria trifasciata 
Kalmia latifolia 
Amanita muscaria
 N Naked lady  
Narcissus  
Needlepoint ivy  
Nephthytis
Colchicum autumnale  
Narcissus spp  
Hedera helix "Needlepoint"  
Syngonium podophyllum
Nightshade  
Nightshade (black)  
Nutmeg  
Nux vomica
Solanum americanum  
Solanum nigrum 
Myristica fragans 
Strychnos nux vomica
 O Oleander  
Onion (wild)
Nerium oleander  
Allium spp
Oriental lily Lilium orientalis
 P Parlor ivy 
Peach 
Peony 
Periwinkle 
Peyote cactus 
Philodendron 
Pimpernel (scarlet) 
Pigweed 
Poinsettia 
Poison hemlock 
Poison ivy 
Poison oak
Philodendron cordatum 
Prunus persica 
Paeonia officinalis 
Vinca major 
Lophophora williamsii 
Philodendron spp 
Anagallis arvensis 
Amaranthus retroflexus 
Euphorbia pulcherrima 
Conium maculatum 
Toxicodendronradicans 
Toxicodendron pubescens
Polyscias 
Pokeberry 
Pokeweed 
Poppy (Iceland) 
Pot mum 
Potato 
Pothos 
Precatory bean 
Primrose 
Privet (common) 
Pyracantha
Polyscias spp 
Phytolacca rigida 
Phytolacca americana 
Papaver naudicaule 
Chrysanthemum mortiforium 
Solanum tuberosum 
Scindapsus aureus 
Abrus precatorius 
Primula obconica 
Ligustrum communis 
Pyracantha spp
 R Ragwort 
Rain tree 
Red emerald 
Red princess 
Redroot
Senecio spp 
Koelreuteria elegans 
Philodendron spp 
Philodendron hastatum 
Amaranthus retroflexus
Rhododendron 
Rhubarb 
Ripple ivy 
Rosary pea 
Rubber plant
Rhododendron spp 
Rheum rhaponticum 
Hedera helix "Ripple" 
Abrus precatorius 
Ficus elastica decora
 S Saddle leaf 
Sago palm 
Schefflera 
Skunk Cabbage 
Snowdrops 
Snow-on-the-mountain 
Soapberry 
Spathiphyllum 
Spider mum 
Split leaf 
Spinach
Philodendron selloum 
Cycas revoluta 
Brassaia actinophylla 
Symplocarpus foetidus 
Galanthus nivalis 
Euphorbia marginata 
Sapindus drummondii 
Spathiphyllum spp 
Chrysanthemum morifolium 
Monstera deliciosa 
Spinacia olearacea
Sprangeri fern 
Spurge 
Spurge laurel 
Staggerweed 
Star of Bethlehem 
St. John's wort 
Stinging nettle 
String of pearls 
Sudan grass 
Sweet pea 
Sweet cheese plant
Asparagus sprengeri 
Euphorbia spp 
Daphne mezereum 
Delphinium spp 
Ornithogalum umbellatum 
Hypericum perforatum 
Urtica dioica 
Senecio rowleyanus 
Sorghum sudanese 
Lathyrus spp 
Monstera deliciosa
 T Tailflower 
Taro vine 
Tiger lily 
Tobacco
Anthurium spp 
Colocasia esulenta 
Lilium humboldtii 
Nicotiana tabacum
Tomato Vine 
Trumpet creeper 
Tulip
Lycopersicon lycopersicum 
Campsis radicans 
Tulipa spp
 U Umbrella tree Brassaia actinophylla    
 V Virginia creeper Parthenocissus quinquefolia    
 W Walnut (black) 
Water hemlock 
Water lettuce 
Weeping fig
Juglans nigra 
Cicuta maculata 
Pistia stratiotes 
Ficus benjamina
Western yew 
White snakeroot 
Wisteria
Taxus brevifolia
Eupatorium rugosum
Wisteria spp
 Y Yellow jessamine Gelsemium sempervirens Yew Taxus spp

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Safe plants: no known records of toxicity. Even if the -otherwise healthy- cat vomits, don't worry! 
Acer spp  
Abies see Pseudotsuga  
Aegopodium podagaria  
Aeschynanthus lobbianus  
Ajuga Reptans    
Albizzia    
Althaea rosea   
Astroelmeria    
Anemone    
Antirrhinum  
Aprenia cordifolia see Lampranthus  
Aralia see Fatsia japonica  
Arbutus unedo  
Arctostaphylos  
Asparagus plumosus   
(sprengeri is TOXIC)  
Asperula odorata  
Aspidistra     
Asplenium nidus  
Aster  
Astilbe     
Aucuba japonica variegata     

Begonia semperflorens   
Beloperone guttata  
Bergenia cordifolia  
Buddleia davidii    

Cactacee   
Calathea zebrina  
Calendula officinalis    
Callistemon  
Callistephus chinensis  
Camellia  japonica   
Campanula glomerata   
Canna generalis    
Catalpa speciosa    
Celosia argentea  
(cristata can be TOXIC)  
Centaurea cyanus  
Ceratonia siliqua  
Cercis canadensis  
Ceropegia woodii   
Chaenomeles speciosa  
Clarkia amoena    
Chlorophytum comosum  
Coleus    
Coreopsis    
Cordyline terminalis  
Cosmos   
Crassula argentea 

Crataegus   
Cryptanthus zonatus  
Cyclamen [leaves & flowers]   
Cydonia   

Dahlia   
Dizygotheca elegantissima  
Draceana fragrans/marginata   
Duchesnea indica    

Echeveria  
Echinacea angustifolia  
Episcia cupreata    
Escallonia   
Exacum affine    

Fatsia japonica   
Fittonia vershaffeltii  
Forsythia   
Freesia alba   
Fuchsia   

Gardenia jasminoides   
Gerbera jamesonii   
Gleditsia triacanthos  
Gloxinia   
Godetia  
Gratopetalum paraguayense    
Grevillea  
Gynura aurantiaca  
Gypsophyla paniculata    

Helichrysum bracteatum  
Helxine soleirolii  
Heuchera sanguinea  
Hibiscus syriacus  
Houttunia cordata  
Hoya carnosa   
Hyacinth   
Hypoestes Phylostachya   

Impatiens  

Kalanchoe pinnata   
(daigremontiana is TOXIC)  
Kniphofia  

Lavandula officinalis   

Lagerstroemia indica  
Lampranthus    
Leea coccinea

Liatris odoratissma    
Linonium species   
Liquidambur   
Lynchnis coronaria  
Lysimachia nummularia    
Lunaris annua    

Magnolia stellata   
Mahonia aquifolium  
Malus [pits are TOXIC]  
Maranta leuconeura  
Mesembryanthemum see Lampranthus   
Mimosa pudica   
Monarda didyma  
Morus    
Muscari  
Myosotis    
   
Nasturtium    
Neoregelia  
Nepeta cataria  
(cause behavioural effects, but NOT toxic)  
Nephrolepsis exaltata  
Nierembergia    
    
Ocimum basilicum  
Oenothera caespitosa  
Oncidium  

Palm  
Pachysandra terminalis    
Peperomia caperata  
Petunia    
Philadelphus  
Phlox    
Photinia glabra/fraseri    
Phyllostachys aurea  
Picea pungens   
Pilea cadierei/microphylla   
Pistacia chinensis    
Pittosporum tobira  
Platanus occidentalis    
Platycodon grandiflora  
Plectranthus australis  
Portulaca   
grandiflora/oleracea  Potentilla    
Protea    
Pseudotsuga taxifolia  
Pulmonaria officinalis 

Radermachera pentandra   
Rechsteineria cardinalis  
Raphiolepsis indica  
Romneya coulteri  
Rosa   

Salix  
Saintpaulia   
Salvia   
Santolina    
Schlumergera bridgesii see Zygocatus truncatus  
Sedum morganianum   
Sempervivum tectorum  
Sinningia speciosa  
Sorbus aucuparia  
Sparaxis    
Sphagnum    
Spirea    
Stapelia    
Syringa vulgaris   

    
Taraxacum officinale    
Thymus serpyllum  
Tolmiea menziesii  
Townsandia sericea  
Trachelospermum jasminoides  
Tropaeolum majus  
Tsuga species    
    
Veronica    
Viburnum  

Watsonia    
Weigelia  

Xylosma  

Yucca  

Zinnia   
Zebrina pendula  
Zygocatus truncatus  
 

Index:   A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 

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Colours Code:

SLIGHTLY TOXIC PLANTS in these plants there are irritant substances, but many cats show no symptoms of poisoning.    POISONOUS PLANTS: may induce drooling, vomit, diarrhea, cramps. Juice may produce painful mouth swelling, rash or dermatitis.     DEADLY PLANTS: if ingested, cause serious effects to major body organs (liver, heart or kidney). Most of them can be fatal.

    

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Abrus precatorius Broken seeds {proteine lectine=abrin, abric acid glycoside} (ribosome inactivating action, after delay of hours or days nausea, vomiting, severe abdominal pain and diarrhea. Later ulcerative lesions of mouth and esophagus; can be fatal)     
Acacia berlandieri {?} 
Achillea millefolium Leaves, flowers (rash or irritation, dermatitis) NOTE: very low toxicity   
Aconitum napellus All parts {alkaloids=aconitine, benzaconine, picraconitine & aconine} (Burning of lips and mouth, numbness of throat; intense vomiting and diarrhea, muscular weakness and spasms, weak pulse, paralysis of the respiratory system, convulsions, may be fatal)    
Actaea All parts, especially berries and roots {glycoside or essential oil, protoanemonin} (burning of mouth and throat, salivation, severe stomach cramps, diarrhea)   
Aesculus glabra/hippocastanum Flowers, leaves, mature fruit, honey {saponic glycoside=aesculin, alkaloids} (gastrointestinal: excessive salivation, gastrointestinal irritation, vomiting, abdominal pain, diarrhea. Neurologic: staggering, trembling, breathing difficulty, dilated pupils, collapse and paralysis,  possible coma)    
Agapanthus orientalis Sap {?} (eye irritation, ulceration of mouth if ingested)    
Agave Sap (severe skin irritation, dermatitis)    
Aglaonema modestum Roots, leaves, stems {calcium oxalate, histamine proteolytic enzymes} (Mouth and throat irritation, salivating, possibly stomach irritation)  
Allium {N-propyl disulfide which primarily affects erythrocytes} (Urine discoloration from red wine to almost black. Muscle weakness, rapid breathing, and a rapid heart rate if hemolysis is sufficiently severe. Possible jaundice, onion odor to the breath, loss of weight and appetite) NOTE: the principle effects are related to hemolysis, rupture of red blood cells.   
Aloe vera Sap {glycoside=anthraquinone} (Abdominal cramping, diarrhea, skin irritation) NOTE: low toxic   
Amanita muscaria Mushroom {muscarine} (hallucinations, drowsiness, vomiting, nausea, stomach pains, diarrhea, muscle spasms, hypotension, liver failure, death) NOTE: lethal   
Amaranthus retroflexus Leaves, stems, roots {nephrotoxin, oxalates, nitrates} (Breathing problems, trembling, weakness, abortions, coma, death)  
Amaryllis Bulbs,  rootstocks {alkaloids=lycorine} (Nausea, vomiting, salivation, possibly diarrhea)   
Ampelopsis quinquefolia Berries {?} (possible nausea) NOTE: very low toxic  
Anagallis arvensis Leaves. stems, flowers {triterpenoid saponin in the above- ground plant parts, a glycoside (cyclamine) in the roots, and an acrid volatile oil. The plant hairs contain primin} (?)   
Anthurium All parts {calcium oxalate, histamine proteolytic enzymes} (Mouth and throat irritation, salivating, possibly stomach irritation)     
Araucaria heterophylla (rash or irritation)     
Arisaema triphyllum Bulbs, stems, possibly leaves {calcium oxalate, histamine proteolytic enzymes} (Oral and gastric irritation, mouth and throat swelling)  
Asclepias syriaca Milky sap, stems {resinoid, cardiac glycoside?} (vomiting, spasms)    
Asparagus myriocladus/sprengeri Berries, sap (gastrointestinal problems, skin irritation, swelling)         
Atropa belladonna All parts, especially berries {alkaloids=tropane, atropine, hyoscyamine} (Fever, rapid pulse, dilatation of pupils, hallucinations, convulsions) NOTE: highly toxic, can be fatal.   
Azalea see Rhododendron    
Astragalus lentiginosus see Oxytropis  

 

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Brassaia actinophylla Leaves, sap {oxalates} (irritation of the mouth, lips & tongue)   
Buxus sempervirens Leaves {steroidal alkaloids} (Nausea, vomiting, diarrhea, dizziness, convulsions, respiratory failure)    
Brugmansia see Datura

 

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Caltha palustris Seeds {glucosinolates and erucic acid} (immediate nausea)      
Caladium Bulbs, leaves, stems {calcium oxalate, histamine proteolytic enzymes} (Mouth and throat irritation, salivating, also nausea, vomiting, and diarrhea may occur)  
Campsis radicans Leaves, flowers (rash or irritation)  
Cannabis sativa Leaves, stems, flowers, seeds, {tetrahydrocannabinol resin, alkaloids, glycosides} (Behavioral changes, trembling, incoordination, gastrointestinal signs)  
Celastrus scandens All parts {peptide, glycosides, alkaloids} (Vomiting, diarrhea)  
Cestrum Unripe berries {glycoalkaloids=solanine-type, alkaloids=atropine-like} (nausea, vomiting, bloody diarrhea, muscular spasms, fever, salivation, sweating, paralysis and possible coma) 
Chrysanthemum Leaves, flowes {sesquiterpene lactone=alantolactone, irritant oil} (rush, might produce dermatitis)  
Cicuta maculata All parts, especially roots {cicutoxin, resinoid, volatile alkaloids=cicutine} (salivation, breathing difficulties, muscular spasms, dilated pupils, collapse, violent convulsions -seizures-, coma,  probably death) NOTE: death can occurs 15 minutes after. 
Cinnamomum camphora {camphor} NOTE: camphor oil is very acrid and in large doses very poisonous 
Clematis All parts {anemonin, clematine} (severe pain in the mouth and ulcers, skin redness and burning sensation) NOTE: leaves and flowers have an acrid burning taste.  
Clivia miniata All parts {alkaloids} (Salivation, nausea, vomiting, and diarrhea) NOTE: paralysis if large amounts ingested  
Codieum variegatum All parts {diterpene esters} (Nausea, vomiting, diarrhea)  
Colchicum autumnale All parts {alkaloid=colchinine, colchicine} (cramping, vomiting, diarrhea, increased blood pressure, respiratory failure) NOTE: Highly toxic 
Coleus Leaves {Diterpene coleonol, coleon O} (dermatitis) NOTE: very low toxicity  
Colocasia esulenta Roots, leaves, stems {calcium oxalate, histamine proteolytic enzymes} (immediate nausea, mouth and throat irritation, salivating, possibly stomach irritation) 
Columnea 
Conium maculatum All parts, especially young leaves and seeds {piperidine niconinic alkaloids=coniceine, coniine, N-methyl coniine, conhydrine, and pseudoconhydrine, glucosinolates, erucic acid} (nervousness, trembling, incoordination, depression, coma, possible death) NOTE: no convulsions  
Convallaria majalis All parts, especially bulbs, rootstocks {cardiac glycosides=convallatoxin, convalloside, saponins} (pupil dilation, irregular heartbeat, convulsions, can be fatal) 
 Coriaria thymifolia Black berries {sesquiterpene, coriamyrtine, coriatine, tutine} (nervousness, hallucinocenic effects, convulsions) NOTE: all species are highly toxic 
Cycas revoluta All parts {glycosides, aminoacid BMAA} (Vomiting, diarrhea, dizziness, seizures)  
Cyclamen persicum Rhizomes {triterpenoid saponin=cyclamin} (nausea, vomiting diarrea) NOTE: leaves and flowers are safe.      
Consolida see Ranunculus

 

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Dahlia Leaves, tubers {toxic polyacetylene compounds} (dermatitis) NOTE: very low toxic 
Daphne mezereum Fruits, leaves {diterpenoid=mezerein} (Swelling of lips and tongue, thirst, difficulty of swallowing, nausea, vomiting, internal bleeding with bloody diarrhea, weakness, and coma. Can be fatal) 
Datura stramonium/candida All parts, especially seeds and leaves {tropane alkaloids=atropine, scopolamine, hyoscyamine} (Dilatated pupils, agitation, trembling, delirium, convulsions, coma) NOTE: hallucinogenic properties (D. stramonium). Convulsions or coma often precede death. 
Delphinium All parts, especially seeds and young leaves {diterpene alkaloid=methyllycaconitine, delphinine, ajacine} (curare-like effects: nervousness, incoordination, staggering, salivating, bloating, abnormal heart beat, breathing difficulty, paralysis, convulsions) NOTE: higly toxic, may be fatal 
Dianthus Leaves {triterpenoid saponins} (Skin irritation)  
Dicentra cucullaria Tubers, leaves {morphine-like derivates, isoquinoline alkaloids =apomorphine, protoberberine, protopine} (salivating, breathing difficulty, abdominal pain, collapse, convulsions, neurologic signs)  
Dictictis buccinatoria (rash or irritation) 
Dieffenbachia Leaves, stems {calcium oxalate, oxalic acid, histamine proteolytic enzymes}(severe pain and burning in the lips, mouth, and throat,  salivation) NOTE: difficulty breathing - very dangerous! 
Digitalis purpurea All parts {cardiac glycosides=digitoxin, digitalin,gigitonin, volatile oils} (abdominal pain, vomiting, diarrhea, dizziness, irregular heart beat, delirium or halucinations. Can be fatal) 
Dracaena 

 

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Eucaliptus Leaves, bark {eucalyptus oil, cyanogenic glycoside} (nausea, vomiting, diarrhea, possible coma) NOTE: eucalyptus oil is extremely toxic if eaten  
Euonymus japonicus Especially seeds, also leaves & bark {cardiac glycosides=evomonoside, digitoxigenin, evonine, in the seeds also alkaloids} (Vomiting, diarrhea, weakness, chills, coma, and convulsions)     
Eupatorium rugosum Leaves and stems, possibly flowers {fat-soluble alcohol=tremetol} (Trembling, sweating, depression, stiff gait, heart failure, jaundice, toxic milk, possible death) 
Euphorbia marginata/milii/lactea Milky latex {phorbol esters, diterpene esters}  (rush, dermal and severe ocular irritation. Nausea, vomiting, diarrhea when ingested) NOTE: cytoskeletal damage and tumor promotion (E. milii). Death is very rare.  
Epipremnum aureum see Scindapsus   
Euphorbia pulcherrima see Poinsettia

 

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Ficus Milky sap {Furocoumarins, psoralens, ficin} (rash or irritation, itching of eyes) 

 

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Galanthus nivalis Bulbs {alkaloids=phenanthridine} (nausea, vomiting, and diarrhea) NOTE: low toxic 
Gelsemium sempervirens All parts {alkaloids=gelseminine and gelsemine, gelsemic acid in the rhizome} (Sweating, nausea, muscular weakness, dilated pupils, lowered temperature, convulsions, respiratory failure) NOTE: powerful spinal depressant, may be fatal 
Glechoma hederacea Leaves, stems {irritant oil} (?) NOTE: causes cyanosis in horses  
Gloriosa superba All parts, especially tubers {alkaloids=colchicine and others,  resins} (numbness of lips, tongue, and throat, fever, vomiting, bloody diarrhea, difficult breathing, convulsions) NOTE: highly toxic, can be fatalif eaten 
Gypsophyla paniculata All parts {saponin?} (nose irritation, allergic asthma, possible dermatitis) NOTE: low toxicity

 

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Halogeton glomeratus  
Hedera helix Leaves, berries {triterpenoid saponins, polyacetylene compounds, saponic glycoside=aglycone hederagenin} (immediate nausea, oral irritation, stomach irritation, diarrhea, breathing problems)    
Helleborus niger All parts {protoanemonin} (burning of mouth and throat, salivation, vomiting, abdominal cramping, diarrhea, nervous symptoms, depression)   
Heteromeles arbutifolia  
Hyacinthus orientalis Bulbs, rootstocks {alkaloids=lycorine} (colic, vomiting, diarrhea) NOTE: poisoning is very rare.  
Hydrangea Bark, leaves, flower buds {cyanogenic glycoside=hydrangin} (gastroenteritis, vomiting, bloody diarrhea) NOTE: poisoning don't generally involve signs of typical cyanide.   
Hyoscyamus niger All parts {tropane alkaloids} (Salivation, nausea, vomiting, diarrhea, rapid pulse, convulsions, coma) NOTE: highly toxic, can be fata  
Hypericum perforatum/calicinum Leaves, flowers {primary photosensitizing chemical=hypericin} (rash or irritation) NOTE: hypericin is a fluorescent pigment, derivative of naphthodianthrone, wich is contained in small black dots that are just visible to the naked eye on leaves and petals.  
Hippeastrum see Amaryllis

 

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Ilex aquifolium Berries {illicin, possibly saponic glycosides, triterpenoids} (vomiting, abdominal pain, salivation, diarrhea)      
Ipomoea Seeds {indole alkaloids, LSD and others} (Hallucinations, dilated pupils, nausea, vomiting, diarrhea, drowsiness, numbness of extremities, and muscle tightness) NOTE: toxicity is low   
Iris Plant juices, Rhizomes (thickened roots) and rootstocks {glycoside=iridin or irisine} (Nausea, vomiting, abdominal pain, diarrhea, elevated temperature following ingestion) 

 

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Jasminum Berries 
Juglans nigra Bark, mature fruit, wood {naphthoquinone=juglone} (rash or irritation)  
Juniperus communis Fleshy cones {volatile oils, thujone} (diarrhea) 

 

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Kalanchoe daigremontiana Leaves, include plantlets{cardiac glycoside=bufadienalide, daigremontianin} (breathing, labored      
convulsions, paralysis)    
Kalmia latifolia {resinoid=andromedotoxin, glycosides=arbutin,  grayanotoxins} (Salivation, watering of eyes and nose, slow pulse, nausea, vomiting, abdominal pain, paralysis) NOTE: highly toxic, may be fatal  
Koelreuteria (vomiting, abdominal pain, and in some cases diarrhea) 

 

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Laburnum All parts {alkaloid=cytisine} (Nervousness, stomach and intestinal irritation with nausea, vomiting, and diarrhea; irregular pulse, convulsions, coma; may be fatal) NOTE: highly toxic, have a very poisonous action 
Lantana camara Unripe green berries {triterpenes=lantadene A & B, pentacyclic triterpene acids=dihydrolantadene A, and icterogenin} (Vomiting, diarrhea, dilated pupils) 
Lathyrus Seeds {Amine, phenol, and glycoside} ("Lathyrism": paralysis, slow and weak pulse, shallow breathing, convulsions) 
Ligustrum Berries {glycosides=ligustrin, syringin} (Abdominal pain, nausea, delayed vomiting, diarrhea) 
Lilium longiflorum Especially leaves (vomiting, depression, lack of appetite, kidney damage. Death within 5 days) NOTE: If emergency treatment is begun within 6 hours of consumption, the chance are good that the cat will recover 
Linum usitatissimum All parts {cyanogenic glycoside=linomarin} (ingestion causes difficulty of breathing, paralysis, and convulsions)   
Lobelia inflata/cardinalis Leaves, stems {alkaloids=lobelamine, lobeline, volatile oil} (Nausea, vomiting, diarrhea, salivation, exhaustion and weakness, dilation of pupils, convulsions, coma) 
Lonicera japonica Berries, vines {Vine with saponic and cyanogenic glycosides; fruits with carotenoids} (possible nerve involvement, vomiting, diarrhea, pupil dilation, cold sweat, rapid heartbeat, respiratory failure, convulsions, and coma) 
Lophophora williamsii (hallucinogens)  
Lupinus All parts, especially pods with seeds {alkaloid=anagyrine} (Breathing problems, behavioral changes, trembling, birth defects, coma, possible death) 
Lycium barbarum Leaves {Atropine, hyoscyamine, scopolamine} (abdominal pain, dilated pupils, vomiting, diarrhea, circulatory and respiratory depression)   
Lycopersicon lycopersicum Tomato vines, green tomatoes {Steraoidal glycoalkaloides=solanine} (gastroentestinal tract irritation)     
Lysichitum americanum see Symplocarpus

 

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Malus Seeds {Cyanogenic glycoside, amygdalin} (Difficult breathing, trembling, spasms, coma of short duration) NOTE: fruits are edible, but discard the seeds   
Medicago sativa Leaves, stems {phytoestrogens=coumestrol & coumestan, saponins, medicagenic acid}  
Melia azedarach Fruits and tea from leaves {neurotoxins=tetranortriterpene, saponin}  (Stomach irritation, vomiting, bloody diarrhea, paralysis, irregular breathing, convulsions)  
Menispermum canadense Mature fruit {alkaloids=acutamine, dauricine} (Convulsions) NOTE: highly toxic, may be fatal  
Momordica charantia Outer fruit coat, seeds {resin, saponic glycoside, alkaloids} (salivation, vomiting, abdominal pain, diarrhea) Monstera deliciosa Leaves {calcium oxalate, histamine proteolytic enzymes} (Mouth and throat irritation, salivating, nausea, vomiting, and diarrhea may also occur)     
Myrabilis jalapa Bulbs, seeds {?} (Stomach pain, nausea, vomiting, diarrhea)    
Myristica fragrans (hallucinogenic effects) 

 

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Narcissus pseudo-narcissus Bulbs {phenanthridine alkaloids=lycorine, calcium oxalate crystals) (nausea, vomiting, diarrhea, salivation, trembling, convulsions) NOTE: may be fatal  
Nerium oleander All parts {cardiac glycoside=oleandrin, nerioside} (immediate nausea, gastrointestinal irritation, cardiac abnormalities, probably death) NOTE: may be fatal  
Nicotiana tabacum Leaves {nicotine alkaloid} (vomiting, diarrea, gastrointestinal irritation, trembling, staggering, weakness, breathing problems, heart problems, collapse) 

 

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Ornithogalum umbellatum All parts, especially bulbs {cardiac glycosides=convallatoxin & convalloside, calcium oxalate crystals} (rash or irritation, nausea, salivation, vomiting, diarrhea, shortness of breath)    
Oxytropis sericea Leaves, mature fruit, seeds, stems, flowers {alkaloid=swainsonine, slaframine,  hallucinogens} (cellular damage, central nervous system damage, possible heart failure)

 

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Paeonia officinalis (rash or irritation)   
Papaver naudicaule Dried milky sap from all parts, but mainly fruits {alkaloid, morphine} (Stupor, coma, shallow and slow breathing, respiratory and circulatory depression) NOTE: highly toxic  
Parthenocissus quinquefolia/tricuspidata Laeves, mature fruit {oxalates, oxalic acid} (tongue pain, sore lips, mouth swollen and throat irritation, salivating, Nausea, abdominal pain, bloody vomiting and diarrhea) NOTE: hoghly toxic, may be fatal  
Pelargonium Leaves {essential oils} (dermatitis) NOTE: very low toxicity  
Persea americana Leaves, pits, twigs {?} (ingesting leaves, branches, or seeds has caused lung congestion and udder inflammation)     
Philodendron Roots, leaves, stems {calcium oxalate, histamine proteolytic enzymes} (Mouth and throat irritation, salivating, possibly stomach irritation) 
Phoradendron flavescens Berries {amine} (Stomach and intestinal irritation with diarrhea, lowered blood pressure, and slow pulse, irregular heartbeat-can be fatal) 
Pistia stratiotes All parts {oxalates} (irritation of the mouth, lips & tongue) 
Podophyllum peltatum Unripe fruit, leaves {podophyllin} (dermatitis, cathartis, salivation, vomiting, diarrhea, excitement,  fever, coma) NOTE: highly toxic, may be fatal 
Poinsettia pulcherrima Leaves and stems {irritant latex} (salivation,  rash, and stomach upset. Skin, mouth, eye irritation) NOTE: very low toxicity  
Polyscias All parts {saponic glycosides} (Irritation of the mouth, dilated pupils, stomach pain, nausea, vomiting) 
Primula sinensis/obconica {allergenic quinone=primin} (rash or irritation)   
Pteridium aquilinum All parts, spores {carcinogenic proteinaceous enzyme=thiaminase, causing a reduction in vitamin B1, ptaquiloside, prunasin, aquilide A} (weakness, fever, convulsions).  
Pyracantha (rash or irritation)   
Physalis longifolia Unripe berries, leaves {alkaloids=solanine, solanidine} (vomiting, diarrhea, circulatory and respiratory depression) NOTE: may be fatal 
Phytolacca dodecandra/americana All parts, especially roots and seeds [saponin toxins=phytolaccigenin, lemmatoxins] (Salivation, abdominal pain, colic, diarrhea which may be bloody)     
Prunus All parts, especially pits, sprouts, damaged leaves {cyanogenic glycoside, hydrocyanic acid, amygdalin, cyanide} (Gasping, weakness, excitement, pupil dilatation, spasms, convulsions,  respiratory failure, collapse, coma) NOTE: fruits are edible. P. laurocerasus contains {prulaurasin or laurocerasin} can cause cyanogrenic poisoning.        

 

 

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Ranunculus Fresh leaves and stems {irritant oil, protoanemonin, glycoside=ranunculin} (oral irritation, salivation, abdominal pain, diarrhea which may be bloody)    
Rhamnus Berries {glycosides} (Nausea, vomiting, and diarrhea) NOTE: low toxic  
Rheum rhaponticum Especially the leaves {oxalic acid, soluble oxalates, citric acid, glycoside=anthraquinones} (Staggering, trembling, breathing difficulties, weakness, diarrhea, increased drinking and urinating, systemic kidney problems, convulsions)  
Rhododendron All parts, especially leaves {andromedotoxin, grayanotoxins glycosides} (gastrointestinal irritation with some hemorrhage, secondary aspiration pneumonia, and sometimes renal tubular damage and mild liver degeneration. Salivation, vomiting, abdominal pain, abnormal heart rate and rhythm, convulsions, coma) NOTE: can be fatal  
Ricinus communis Cheewed seeds {phytotoxalbumin=ricin, alkaloid=ricinine, irritant oil} (immediate or delayed nausea, vomiting, abdominal pain, bloody diarrhea, depression, trembling, sweating, convulsions, coma; may be fatal) NOTE: Ricin is water soluble and is not present in castor oil. Commercial castor oil-based products are SAFE.  
Robinia pseudoacacia especially wilted leaves, young shoots, pods, seeds, inner bark {phytotoxin=robin, glycoside=robitin, alkaloid=robinine} (depression, poor appetite, weakness, paralysis, abdominal pain, diarrhea -which may be bloody- and abnormalities in the heart rate and/or rhythm) NOTE: death is possible 
Rudbeckia laciniata Flowers, leaves, stems {?} (incoordination?) NOTE: very distasteful to eaten, poisoning is very rare      
Rumex acetosa Leaves, stems {oxalates} (diarrhea?) NOTE: nitrates may accumulate to toxic levels    
Rhus toxicodendron see Toxicodendron 

 

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Sambucus nigra/canadensis Leaves, twigs (stems), roots, unripe fruits {cyanogenic glycoside, alkaloids}    
(can cause cyanide poisoning, nausea, vomiting, diarrhea, coma) NOTE: Cooked berries and juice are edible 
Sanguinaria canadensis Rhizome {isoquinoline alkaloids, sanguinarine, chelerythrine, opium alkaloids=protopine and b. homochelidonine} (Nausea, vomiting, faintness, dizziness, dilated pupils, fainting, diarrhea, heart failure) NOTE: highly toxic, can be fatal  
Sansevieria trifasciata All parts, especially flowers {possibly saponins, organic acids} (excessive salivation; skin irritation) NOTE: very low toxic 
Sapindus drummondii Fruit {saponic glycoside} (nausea, vomiting, diarrhea)   
Scindapsus aureus Roots, leaves, stems {calcium oxalate, histamine proteolytic enzymes} (Burning and swelling of lips, mouth, tongue, and throat, also diarrhea)   
Senecio All parts, especially seeds {alkaloids} ("Poor doer", weight loss, unthriftiness, poor hair coat, anorexia, behavioral changes, sunscald, liver failure, jaundice, can be fatal) NOTE: The toxin is cumulative, and continues to damage the liver until enough of the liver is affected to cause clinical signs  
Sequoia sempervirens (rash or irritation) 
Solanum tuberosum vines, green spots, and tubers {steroidal glycoalkaloids=solanine, chaconine} (abdominal pain, vomiting, diarrhea, constipation) NOTE: Don't expose potatoes to sunlight. Glycoalkaloids are NOT destroyed by cooking 
Solanum All parts, expecially the berries {steroidal glycoalkaloids=solanine, atropine} (abdominal pain, vomiting, diarrhea, incoordination, weakness, depression, apparent hallucinations, convulsions, may be fatal). NOTE: S. Nigrum possesses more narcotic properties then S. dulcamara.  
Sophora secundiflora 
Sorghum halepense/sudanese Leaves & stems, especially young plants {cyanide, nitrates} (Breathing problems, staggering, severe anxiety, convulsions, coma, can be fatal)  
Spathiphyllum {oxalates} (irritation of the mouth, lips and tongue)   
Spinacia oleracea 
Stephanotis (rash or irritation)    
Strelitzia reginae 
Strychnos nux-vomica especially seeds {stycnine, brucine} (convulsions) NOTE: can be fatal 
Symplocarpus foetidus Roots, leaves, stems {calcium oxalate, histamine proteolytic enzymes} (Mouth and throat irritation, salivating, intense pain, vomiting, diarrea) 
Syngonium podophyllum All parts {calcium oxalate, histamine proteolytic enzymes} (tongue pain, sore lips, mouth swollen and throat irritation, salivating, possibly stomach irritation)     
Schefflera actinophylla see Brassaia   
Sarcobatus vermiculatus see Amaranthus

 

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Taxus Leaves, twigs, barks, seeds, especially the berries {alkaloid=taxine} (Sudden death -cardiac and/or respiratory collapse- Occasionally: breathing problems, trembling, weakness, heart problems, gastroenteritis) NOTE: very poisonous 
Tetradymia 
Toxicodendron radicans All parts {urushiol, toxicodendrol, toxicodendrin} (Severe skin redness, itching, swelling) NOTE: very toxic if ingested.   
Tradescantia albiflora/purpurea Leaves {oxalates?} (rash or irritation, dermatitis)  
Triglochin maritima Flowers, leaves {cyanogenic glycosides=triglochinin, taxiphillin} (nervousness, trembling, convulsions, vomiting,  possible death by asphyxiation if large amount is eaten) NOTE: higly toxic, may be fatal 
Trifolium All parts, especially leaves {possible nitrates, isoflavone estrogens, moderate cyanogenic potential} (photosensitization, possible liver damage) NOTE: when attacked by fungus, may contains muscarinic toxins & slaframine.  
Tulipa Bulbs, stem, flowers {phytoalexin=tulipalin, allergins; glycoprotein} (rash or irritation, stomach pain, salivation, sweating, nausea, vomiting) NOTE: low toxicity

 

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Urtica dioica stinging hairs on stems & leaves (Intense burning and itching sensation, dermatitis)

 

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Vicia faba Seeds {cyanogenic glycosides} (dizziness, diarrhea, nausea, vomiting, stomach pain) 
Vinca major {hallucinogens} 

 

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Wisteria Seeds {glycoside=wistarine, poisonous lectin, toxic resins} (salivation, nausea, vomiting, stomach pain, diarrhea)

 

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Xanthium strumarium Especially seeds and cotyledons of seedlings {glycoside=carboxyatractyloside, sesquiterpene, lactones} (Gastrointestinal irritation, weakness, breathing difficulty, behavioral changes, cardiac abnormalities, potentially lethal hypoglycemia may occur) NOTE: The toxin readily disappears after germination

 

 

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Zantedeschia aethiopica All parts {calcium oxalates} (Severe burning sensation and swelling of lips, tongue, and throat; stomach pain and diarrhea possible) NOTE: highly toxic   
Zigadenus venenosus All parts, especially flowers & bulbs {steroidal alkaloids=zygacine} (?) NOTE: is considered to be the most toxic members of the genus Zigadenus. Can be fatal

 

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DISCLAIMER: This is simply a list of possibly dangerous plants. I made it because I love my plants & Spottie. Please, be aware that it's NOT suitable for botanical or veterinarian purpose. I STRONGLY suggest you to rely to your VET for every problem. Please, do!

My Internet Sources:   Cornell University Animal Science: Alphabetical List of Poisonous Plants and its links: Indiana Plants Poisonous to Livestock and Pets  University of Illinois Plants Poisonous to Animals  Pennsylvania University's Veterinary School: Poisonous Plants Directory  Canadian poisonous plants information system Take Care With Plants Poisonous Plants of North Carolina Poisonous Plants for Dogs and Cats A Modern Herbal: Index of Poisonous Plants  ASPCA-List of Poisonous Plants Links:  ASPCA NATIONAL ANIMAL POISON CONTROL CENTER Amby's Plants Toxic To Cat Safe Plants

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