This section includes a list of plants that could potentially be harmful to canines and other domesticated animals. Below, in alphabetical order by their common names, we have listed some plants that should be avoided. In addition to this, the botanical Latin name of each plant has been provided. You should also be aware of any possibly poisonous houseplants that you could have in your home and make sure to keep them well out of your pet’s reach.
You should consult a veterinarian as soon as possible if you have any reason to believe that your dog, cat, or other pet has chewed on or consumed ANY dangerous plant or substance. Bring the vet a piece of the plant or substance with you if at all feasible so that they may examine it.
To see a listing of plants arranged in alphabetical order according to their common names, click on the appropriate link below. Read this guide for dog-friendly garden planning.
Overview
A
Aconite
- Acontium napellus
Adam and Eve
- Arum maculatum
- Toxin = Insoluble calcium oxalates
- Also known as Arum, Lord-and-Ladies, Wake Robin, Starch Root, Bobbins, and the Cuckoo Plant
Acorns (Oak Poisoning)
- Quercus sp.
African Wonder Tree (Castor Oil Plant)
- Ricinus communis
- Toxin = Ricin (Highly Toxic)
- All parts are poisonous, especially the seeds
Alocasia
- Alocasia spp.
- Toxin = Insoluble calcium oxalates
- Also known as Elephant’s Ear
Aloe
- Aloe vera
- Toxin = Saponins
Amaryllis
- Amaryllis sp.
- Toxin = Lycorine and others
- Known by many other names, including: Belladonna lily, Saint Joseph lily, Cape Belladonna, and Naked Lady
Ambrosia Mexicana
- Chenopodium botrys / Ambrosia mexicana
- Toxin = Sesquiterpene lactones
- Also known as Jerusalem Oak, and Feather Geranium
American Holly
- Ilex opaca
- Toxin = saponins
- Also known as English Holly, European Holly, Oregon Holly, Inkberry,or Winterberry
American Mandrake
- Podophyllum peltatum
- Toxin = Podopyllin
- Also known as Mayapple, Indian Apple Root, Umbrella Leaf, Wild Lemon, Hog Apple, Duck’s Foot, and Raccoonberry
Andromeda Japonica
- Pieris japonica
- Toxin = Grayanotoxins
- Also known as Pieris, or Lily-of-the-Valley Bush
Angelica Tree
- Aralia spinosa
- Toxin = Araliin
- Also known as Hercules’ Club, Devil’s Walking Stick, Prickly Ash, or Prickly Elder
Apples
- Malus sylvestrus / Malus sp.
- Toxin = Cyanogenic glycosides
- Like some other tree-fruit species, the stems, leaves and seeds contain cyanide, which is particularly toxic in the process of wilting. Symptoms of cyanide poisoning include brick red mucous membranes, dilated pupils, difficulty breathing, panting, and shock. Whilst many dog owners have fruit trees growing in their gardens without issue, it is worth clearing fallen fruit from the ground, especially if you’re dog is likely to scavange apples. Eating a large number of apple pips may cause problems, and fallen fruit often attracts wasps, which may also be a problem if the dog is stung whilst eating fruit.
Apricots
- Prunus armeniaca / Prunus sp.
- Toxin = Cyanogenic glycosides
- See ‘Apples’ above
Arrowhead Vine
- Syngonium podophyllum
- Toxin = Insoluble calcium oxalates
- Also known as Nephthytis, Green Gold Naphthysis, African Evergreen, Trileaf Wonder. All part of this plant are poisonous.
Arum
- Arum maculatum
- Toxin = Insoluble calcium oxalates
- Also known as Adam and Eve, Lord-and-Ladies, Wake Robin, Starch Root, Bobbins, and the Cuckoo Plant
Arum Lily
- Zantedeschia aethiopica
- Toxin = Insoluble calcium oxalates
- Also known as Calla Lily, Pig Lily, White Arum, Trumpet Lily, Florist’s Calla,and Garden Calla
Asparagus Fern
- Asparagus densiflorus cv sprengeri / Asparagus setaceus
- Toxin = Sapogenins
- Also known as Emerald Feather, Emerald Fern, Sprengeri Fern, Plumosa Fern, Lace Fern, Racemose Asparagus, and Shatavari
Australian Nut
- Macadamia integrifolia
- Toxin = Unknown
- Also known as the Macadamia Nut, or Queensland Nut
Australian Pine
- Araucaria heterophylla
- Toxin = Unknown
- Also known as the Norfolk Pine, House Pine, and Norfolk Island Pine
Autumn Crocus
- Colchicum autumnale
- Toxin = colchicine and other alkaloids
- Also known as Meadow Saffron
Avacado
- Persea americana
- Toxin = Persin
- Ingestion causes vomiting and diarrhea in dogs and cats
Azalea
- Azalea sp. / Rhododendron sp.
- Toxin = Grayantoxin
- All Azalea and Rhododendron spp are toxic to dogs. All parts of these plants are poisonous if chewed or ingested. Symptoms of poisoning include irritation of the stomach and abdominal pain, increased heart rate and abnormal heart rhythm, convulsions, and coma. May be fatal.
B
Baby Doll Ti Plant
- Cordyline terminalis
- Toxin = Saponins
- Also known as Ti-Plant, Good-Luck Plant, and Hawaiian Ti Plant
Baby’s Breath
- Gypsophila elegans
- Toxin = Gyposenin
- Also known as Maiden’s Breath
Barbados Aloe
- Aloe barbadensis
- Toxin = Anthraquinones, anthracene glycosides (aloin)
- Also known as the Medicine Plant, or True Aloe
Barbados Lily
- Hippeastrum spp.
- Toxin = Lycorine and other alkaloids
- Also known as Amaryllis, Fire Lily, Lily of the Palace, or Ridderstjerne
Barbados Pride
- Caesalpinia pulcherrima
- Toxin = GI Irritants, Tannins.
- Also known as Peacock Flower, and Dwarf Poinciana
Bead Tree
- Melia azedarach
- Toxin = Tetranortriterpenes (meliatoxins)
- Also known as th China Ball Tree, Paradise Tree, Persian Lilac, White Cedar, Japanese Bead Tree, Texas Umbrella Tree, Pride-of-India, or Chinaberry Tree
Begonia
- Begonia spp.
- Toxin = Insoluble oxalates
Belladona
- Atropa belladonna
Bergamot
- Citrus Aurantium
- Toxin = Essential oils and psoralens
Bird of Paradise
- Caesalpinia gilliesii / Poinciana gilliesii
- Toxin = Uncertain, possibly hydrocyanic acid
- Also known as Peacock Flower, Barbados Pride, Poinciana, or Pride of Barbados
Bird of Paradise Flower
- Strelitzia reginae
- Not as toxic as ‘Bird of Paradise’ (see above), but the fruit and seeds of this plant are poisonous if chewed.
Bishop’s Weed
- Ammi majus
- Toxin = Insoluble calcium oxalates
- Also known as Greater Ammi, or False Queen Anne’s Lace
Bitter Root
- Apocynum androsaemifolium
- Toxin = Cardenolides
- Also known as Dogbane Hemp, or Indian Hemp
Black Calla
- Arum palestinum
- Toxin = insoluble calcium oxalates
- Also known as Solomon’s Lily, Wild Calla, and Wild Arum
Black Laurel
- Leucothoe davisiae
- Toxin = Grayanotoxins
- Also known as Dog Hobble, Dog Laurel, Fetter Bush, or Sierra Laurel
Black Nightshade
- Solanum nigrum
- Toxin = Solanine, saponins, atropine-like substances
- Also known as Nightshade, or Deadly Nightshade
Black Walnut
- Juglans nigra
- Toxin = Unknown toxin present in mould that grows on nuts
Branching
- Ivy Hedera helix
- Toxin = Triterpenoid saponins (hederagenin)
- Also known as English Ivy, Glacier Ivy, Needlepoint Ivy, Sweetheart Ivy, or California Ivy
Bread and Butter Plant
- Coleus ampoinicus
- Toxin = Essential oils
- Also known as Indian Borage, Spanish Thyme, Coleus, Maratha, Militini, or East Indian Thyme
Brunfelsia
- Brunfelsia spp.
- Toxin = Brunfelsamidine
- Also known as Yesterday, Today, Tomorrow, Kiss-Me-Quick, Lady-of-the-Night, and Fransiscan Rain Tree
Buckeye
- Aesculus spp
- Toxin = Aesculin (a glycosidic saponin), and other saponins
- Also known as the Horse Chestnut tree
Buckwheat
- Fagopyrum spp.
- Toxin = Fagopyrin
Burning Bush
- Euonymus atropurpurea / Euonymus occidentalis
- Toxin = Alkaloids, Cardenolides
- Also known as the Wahoo, or Spindle Tree
- Buttercup Ranunculus sp.
- Toxin = Protoanemonin
- Also known as Butter Cress, or Figwort
Box
- eBuxus sempervirens
C
Caladium
- Caladium hortulanum
- Toxin = Insoluble calcium oxalates
- Also known as Malanga, Elephant’s Ears, Stoplight, Seagull, Mother-in-law Plant, Pink Cloud, Texas Wonder, Angel-Wings, Exposition, Candidum, Fancy-leaved Caladium
Calamondin Orange
- Citrus mitis
- Toxin = Essential oils and psoralens
Calla Lily
- Zantedeschia aethiopica
- Toxin = Insoluble calcium oxalates
- Also known as Pig Lily, White Arum, Trumpet Lily, Florist’s Calla, Garden Calla, Arum Lily
Cape Jasmine
- Gardenia jasminoides
- Toxin = Genioposide, Gardenoside
- Also known as Gardenia
- Cardboard Palm
- Zamia furfuracea
- Toxin = Cycasin
- Also known as Cycads and zamias
Cardinal Flower
- Lobelia cardinalis
- Toxin = Lobeline
- Also known as Lobelia, or Indian Pink
Carnation
- Dianthus caryophyllus
- Toxin = Unknown irritant
- Also known as Pinks, Wild Carnation, or Sweet William
Castor Bean Plant/Castor Oil Plant
- Ricinus communis
- Toxin = Ricin
- Also known as the Mole Bean Plant or African Wonder Tree
Ceriman
- Monstera deliciosa
- Toxin = Insoluble calcium oxalates
- Also known as the Cutleaf Philodendron, Hurricane Plant, Swiss Cheese Plant, or Mexican Breadfruit
Chamomile
- Anthemis nobilis
- Toxin = Volatile oil; bisabolol, chamazulene, anthemic acid, tannic acid
- Also known as Manzanilla, Garden Chamomile, Roman Chamomile, True Chamomile, Corn Feverfew, Barnyard Daisy, Ground-apple, or Turkey-weed
Charming Dieffenbachia
- Dieffenbachia amoena
- Toxin = Insoluble calcium oxalates, proteolytic enzyme
Cherry
- Prunus sp.
- Toxin = Cyanogenic glycosides found in some species
- Like some other tree-fruit species, the stems, leaves and seeds contain cyanide, which is particularly toxic in the process of wilting. Symptoms of cyanide poisoning include brick red mucous membranes, dilated pupils, difficulty breathing, panting, and shock. Whilst many dog owners have fruit trees growing in their gardens without issue, it is worth clearing fallen fruit from the ground, especially if you’re dog is likely to scavange apples. Eating a large number of apple pips may cause problems, and fallen fruit often attracts wasps, which may also be a problem if the dog is stung whilst eating fruit.
Chinaberry Tree
- Melia azedarach
- Toxin = Tetranortriterpenes (meliatoxins)
- Also known as Bead Tree, China Ball Tree, Paradise Tree, Persian Lilac, White Cedar, Japanese Bead Tree, Texas Umbrella Tree, or Pride-of-India
Chinese Evergreen
- Aglaonema modestrum
- Toxin = Insoluble calcium oxalates
Choke Cherry
- Prunus virginiana
- Highly Toxic
- Symptoms include Nausea, abdominal pain, bloody diarrhea, tenesmus, shortness of breath, dehydration and excessive thirst, weakness, muscle twitching, convulsions, coma. May be fatal.
Christmas Rose
- Helleborus niger
- Toxin = Bufadienolides, glycosides, veratrin and prtoanemonin
- Also known as Hellebores, Lenten Rose, or Easter Rose
Chrysanthemum
- Chrysanthemum sp.
- Toxin = Sesquiterpene, lactones, pyrethrins and other potential irritants
Clematis
- Clematis sp.
- Toxin = Irritant glycoside (Protoanemonin)
Climbing Lily
- Gloriosa superba
- Toxin = Colchicine related alkaloids
- Also known as Gloriosa Lily, Glory Lily, or Superb Lily
Clivia Lily
- Clivia sp.
- Toxin = Lycorine and other alkaloids
- Also known as Kaffir Lily, Clivies, Caffre Lily, Cape Clivia, or Klivia
Coffee Tree
- Polyscias guilfoylei / Aralia guilfoyei
- Toxin = Saponin
- Also known as Wild Coffee, or Geranium-Leaf Aralia
Coleus
- Coleus ampoinicus
- Toxin = Essential Oils
- Also known as Indian Borage, Bread and Butter Plant, Spanish Thyme, East Indian Thyme, Stinging Thyme, or Country Boarage
Corn Cockle
- Lychnis githago
- Corn Plant Dracaena fragrans
- Toxin = Saponins
- Also known as the Cornstalk Plant, Dracaena, Dragon Tree, or Ribbon Plant
Cow Parsley
- Heracleum maximum
- Toxin = Furanocoumarins
- Also known as Giant Hogweed
Cowbane
- Cicuta species
- Toxin = Cicutoxin
- Also known as Water Hemlock, or Poison Parsnip
Creeping Charlie
- Glecoma hederacea
- Symptoms of poisoning include excessive salivation
Crocus
- Colchicum autumnale
- Toxin = colchicine and other alkaloids
- Crocus bulbs in particular are highly toxic
Cutleaf Philodendron
- Monstera deliciosa
- Toxin = Insoluble calcium oxalates
- Also known as Hurricane Plant, Swiss Cheese Plant, Ceriman, Mexican Breadfruit, Split-leaf Philodendron, Window Leaf Plant
Cycads
- Cycas sp. / Zamia sp.
- Toxin = Cycasin, B-methylamino-l-alanine
- Also knownas the Sago Palm, or Fern Palm
Cyclamen
- Cyclamen sp.
- Toxin = Terpenoid saponins
- Also known as Sowbread
D
Daffodil
- Narcissus sp.
- Toxin = Lycorine and other alkaloids
- The bulbs are most poisonous, but also the leaves and flowers if ingested.
Dahlia
- Dahlia sp.
- Toxin = Unknown
Daphne
- Daphne sp.
- All parts are poisonous. Watch out for berries especially.
Deadly Nightshade
- Solanum sp.
- Highly Toxic. Toxin = Solanine, saponins, atropine like substances
- Also known as Nightshade, Black Nightshade, European Bittersweet, or Climbing Nightshade
Delphinium
- Delphinium sp.
- Toxin = Diterpene alkaloids
- Also known as Larkspur
Desert Azalea / Desert Rose
- Adenium obesum
- Toxin = Digitalis like glycosides
- Also known as the Mock Azalea, Sabi Star, Impala Lily, or Kudu Lily
Devil’s Ivy
- Epipremnum aureum
- Toxin = Insoluble calcium oxalates
- Also known as Pothos, Golden Pothos, Taro Vine, or Ivy Arum
Dieffenbachia
- Dieffenbachia
- Toxin = Insoluble calcium oxalates, proteolytic enzyme
- Also known as Charming Dieffenbachia, Giant Dumb Cane, Tropic Snow, Dumbcane, Exotica, Spotted Dumb Cane, or Exotica Perfection
Dock
- Rumex sp.
- Toxin = Soluble calcium oxalates
- Also known as Sorrel
Dog Daisy
- Achillea millefolium
- Toxin = Achilleine and alkaloids
- Also known as Dog Fennel
Dog Hobble
- Leucothoe sp.
- Toxin = Grayanotoxins
- Also known as Dog Laurel, Fetter Bush, Black Laurel
Dogbane Hemp
- Apocynum
- Toxin = Cardenolides
- Also known as Bitterroot, or Indian Hemp
Dracaena
- Dracaena sp.
- Toxin = Saponins
- Also known as Corn Plant, Cornstalk Plant, Dragon Tree, or Ribbon Plant
E
Elephant Ears
- Colocasia esculenta / Caladium hortulanum
- Toxin = Insoluble calcium oxalates
- Also known as Caladium, Taro, Pai, Ape, Cape, Via, Via sori, or Malanga
Emerald Feather
- Asparagus densiflorus
- Toxin = Unknown
- Also known as Emerald Fern, Asparagus, Asparagus fern, Sprengeri fern, Plumosa fern, Lace fern, Racemose asparagus, or Shatavari
English Holly
- Ilex aquifolium
- Toxin = Saponins
- Also known as European Holly, Oregon Holly, Inkberry, Winterberry, or American Holly
Eucalyptus
- Eucalyptus sp.
- Toxin = Essential oils (eucalyptol)
European Bittersweet
- Solanum dulcamara
- Toxin = Solanine
- Also known as Climbing Nightshade, or Deadly Nightshade
Everlasting Pea
- Lathyrus latifolius
- Toxin = Aminoproprionitrite
- Also known as Sweet Pea, or Perennial Pea
Exotica
- Dieffenbachia amoena
- Toxin = Insoluble calcium oxalates, proteolytic enzyme
- Also known as Charming Dieffenbachia, Giant Dumb Cane, Tropic Snow, Dumbcane, Spotted Dumb Cane, Exotica Perfection, or Dieffenbachia
F
False Queen Anne’s Lace
- Ammi majus
- Toxin = Insoluble calcium oxalates
- Also known as Bishop’s Weed, or Greater Ammi
Feather Geranium
- Ambrosia mexicana
- Toxin = Sesquiterpene lactones
- Also known as Jerusalem Oak
Fern Palm
- Cycas sp.
- Toxin = Cycasin, B-methylamino-l-alanine
- Also known as the Sago Palm or Cycads
Fetter Bush
- Leucothoe sp.
- Toxin = Grayanotoxins
- Also known as Dog Laurel, Dog Hobble, Black Laurel
Ficus
- Ficus benjamina
- Toxin = Proteolytic enzyme (ficin), psoralen (ficusin)
- Also known as Fig, Weeping Fig,or Indian Rubber Plant
Fiddle-Leaf
- Philodendron bipennifolium
- Toxin = Insoluble calcium oxalates
- Also known as the Horsehead Philodendron, Cordatum, Heartleaf Philodendron, Panda Plant, Split Leaf Philodendron, Fruit Salad Plant, Red Emerald, Red Princess, or Saddle Leaf
Fig
- Ficus benjamina
- Toxin = Proteolytic enzyme (ficin), psoralen (ficusin)
- Also known as Ficus, Weeping Fig,or Indian Rubber Plant
Figwort
- Ranunculus sp.
- Toxin = Protoanemonin
- Also known as Butter Cress, or Buttercup
Fire Lily
- Hippeastrum sp.
- Toxin = Lycorine and other alkaloids
- Also known as Amaryllis, Barbados Lily, Lily of the Palace, or Ridderstjerne
Flag
- Iris sp.
- Toxin = Pentacylic terpenoids (zeorin, missourin and missouriensin)
- Also known as Iris, Snake Lily, Water Flag
Flamingo Flower/ Flamingo Lilly
- Anthurium scherzeranum
- Toxin = Insoluble calcium oxalates
- Also known as Tail Flower, Oilcloth Flower, Pigtail Plant, or Painter’s Pallet
Florida Beauty
- Dracaena surculosa
- Toxin = Agavaceae
- Also known as Gold Dust Dracaena, or Spotted Dracaena
Foxglove
- Digitalis
- Highly toxic. Toxin = Cardiac glycosides
- Widely recognised as the most universally toxic plant. All parts are poisonous.
Franciscan Rain Tree
- Brunfelsia species
- Toxin = Brunfelsamidine
- Also known as Yesterday-Today-Tomorrow, Lady-of-the-Night, Morning-Noon-and-Night, or Kiss-Me-Quick
G
Gardenia
- Gardenia jasminoides
- Toxin = Genioposide, gardenoside
- Also known as Cape Jasmine.
Garlic
- Allium sativum
- Toxin = N-propyl disulfide
- May be beneficial to the health of dogs in small amounts, but like all Alliums, is toxic in larger quantities
Geranium
- Pelargonium sp.
- Toxin = Geraniol, linalool
Giant Hogweed
- Heracleum maximum
- Toxin = Furanocoumarins
- Also known as Cow Parsley
Gladiola
- Gladiolus sp.
- Toxin = Unknown
Good Luck Plant
- Oxalis sp.
- Toxin = Soluble calcium oxylates
- Also known as Shamrock Plant, or Sorrel
- Grapes
- Toxin = Unknown
Grass Palm
- Cordyline australis
- Toxin = Saponins
- Also known as Giant Dracaena, or Palm Lily
H
Heartleaf Philodendron
- Philodendron bipennifolium
- Toxin = Insoluble calcium oxalates
- Also known as Horsehead Philodendron, Cordatum, Fiddle-Leaf, Panda Plant, Split Leaf Philodendron, Fruit Salad Plant, Red Emerald, Red Princess, or Saddle Leaf
Heavenly Bamboo
- Nandina domestica
- Toxin = Cyanogenic glycosides
- Also known as Sacred Bamboo, or Nandina
Heliotrope
- Heliotropium sp.
- Toxin = Pyrrolizidine alkaloids
Hellebores
- Helleborus niger
- Toxin = Bufadienolides, glycosides, veratrin and prtoanemonin
- Also known as the Christmas Rose, or Easter Rose
Hemlock (water hemlock)
- Conium maculatum
- Toxin =
- Highly Toxic All parts are poisonous, especially the root and stalk. Symptoms include dilation of the pupils, foaming at the mouth, muscle spasms, restlessness, convulsions, and in some cases death within 15 min to 2 hours.
Hercules’ Club
- Aralia spinosa
- Toxin = Araliin
- Also known as Angelica Tree, Devil’s Walking Stick, Prickly Ash, or Prickly Elder
Hibiscus
- Hibiscus syriacus
- Toxin = Unknown
- Also known as Rose of Sharon, or Rose of China
Holly
- Ilex opaca
- Toxin = saponins
- Also known as English Holly, European Holly, Oregon Holly, Inkberry, Winterberry, or American Holly
Hops
- Humulus lupulus
- Toxin = Unknown
Horse Chestnut
- Aesculus sp.
- Toxin = Aesculin (a glycosidic saponin), other saponins
- Also known as ‘Buckeye’
Hosta
- Hosta plataginea
- Toxin = Saponins
- Also known as Plantain Lily, or Funkia
Hurricane Plant
- Monstera deliciosa
- Toxin = Insoluble calcium oxalates
- Also known as Cutleaf Philodendron, Swiss Cheese Plant, Ceriman, or Mexican Breadfruit
Hyacinth
- Hyacinth orientalis
- Toxin = Narcissus like alkaloids
- All parts of this plant are poisonous
Hydrangea
- Hydrangea sp.
- Toxin = Cyanogenic glycoside
- Also known as Hortensia, Hills of Snow, or Seven Bark. The leaves and buds of this plant are poisonous, with ingestion resulting in irritation and inflammation of the digestive tract, diarrhea, and bloody stools.
I
Indian Rubber Plant
- Ficus benjamina
- Toxin = Proteolytic enzyme (ficin), psoralen (ficusin)
- Also known as Fig, Weeping Fig,or Ficus
Inkberry (Pokeweed)
- Ilex opaca
- Toxin = Saponins
- Also known as English Holly, European Holly, Oregon Holly, American Holly, Winterberry
Iris
- Iris sp.
- Toxin = Pentacylic terpenoids (zeorin, missourin and missouriensin)
- Also known as Flag, Snake Lily, Water Flag
Ivy
- Hedera helix
- Toxin = Triterpenoid saponins (hederagenin)
- Also known as English Ivy, Branching Ivy, Glacier Ivy, Needlepoint Ivy, Sweetheart Ivy, or California Ivy. All parts are poisonous. Dogs may chew on stems which often lie low to the ground. Symptoms of poisoning include stomach irritation, breathing difficulties, eventual coma and death.
J
Jack-in-the-pulpit
- Arisaema triphyllum
- Toxin = Insoluble calcium oxalates
- Also known as Three-leaved indian turnip, Devil’s dear, Wake robin, Starch wort, Wild turnip, Dragon root, Bog onion, Pepper turnip, Brown dragon, or Memory root
Jade Plant
- Crassula argentea
- Toxin = Unknown
- Also known as Baby Jade, Dwarf rubber plant, Jade tree, Chinese rubber plant, or Japanese rubber plant
Japanese Yew
- Taxus sp.
- Toxin = Taxine A and B, Volatile oil
- Also known as English Yew, Western Yew, Pacific Yew, Anglo-Japanese Yew
Jerusalem Cherry
- Solanum pseudocapsicum
- Toxin = Solanine
- Also known as Natal cherry, or Winter cherry.
Jerusalem Oak
- Ambrosia mexicana
- Toxin = Sesquiterpene lactones
Johnsongrass
- Sorghum halepense
- Highly Toxic The leaves and stems of this plant are poisonous, especially so in young plants. Ingestion may lead to breathing difficulties, severe anxiety, convulsions, coma, and death.
Jimson Weed
- Datura stramonium
- Highly Toxic All parts of this plant are poisonous, and may cause increased heart rate, rapid breathing, dilation of the pupils, restlessness, nervousness, twitching, frequent urination, diarrhea, depression, convulsions, coma, and death.
Jonquil
- Narcissus jonquilla
- Toxin = Lycorine and other alkaloids
- Also known as Daffodil, Narcissus, or Paper White
K
Kaffir Lily
- Clivia sp.
- Toxin = Lycorine and other alkaloids
- Also known as Clivia Lily, Clivies, Caffre Lily, Cape Clivia, or Klivia
Kalanchoe
- Kalanchoe sp.
- Toxin = Bufodienolides
- Also known as Mother-In-Law-Plant, Devils Backbone, Chandelier Plant, or Mother of Millions
L
Laburnum
- Laburnum sp.
- Toxin = Cytisine
- All parts of this plant are poisonous.
Lace Fern
- Asparagus densiflorus cv sprengeri / Asparagus setaceus
- Toxin = Sapogenins
- Also known as Emerald Feather, Emerald Fern, Sprengeri Fern, Plumosa Fern, Asparagus Fern, Racemose Asparagus, and Shatavari
Lacy Tree Philodendron
- Philodendron selloum
- Toxin = Calcium oxalate crystals
Lantana
- Lantana camara
- Highly Toxic. Toxin = Pentacyclic triterpenoids
- Also known as Shrub Verbena, Yellow Sage, or Red Sage.The leaves and berries of this plant are poisonous and ingestion may result in sluggishness, weakness and bloody diarrhea. In severe cases, death may occur in 2 to 4 days.
Larkspur
- Delphinium Spp
- Toxin = Diterpene alkaloids
Laurel
- Kalmia latifolia
- Toxin = Grayanotoxins
- Also known as Mountain laurel, Spoonwood, Mountain Ivy, Calico Bush, or Ivy Bush
Leek
- Allium ampeloprasum
- Toxin = N-propyl disulfide
- Also known as Elephant Garlic
Lilly
- Lilium sp.
- Toxin = Unknown
Lilly of the Valley
- Convallaria majalis
- Toxin = Cardenolides (convallarin, and others)
Lobelia
- Lobelia cardinalis
- Toxin = Lobeline
- Also known as Cardinal Flower, or Indian Pink
Lord-and-Ladies
- Arum maculatum
- Toxin = Insoluble calcium oxalates
- Also known as Arum, Wake Robin, Adam-and-Eve, Starch Root, Bobbins, or Cuckoo Plant
Lyonia
- Lyonia sp.
- Highly Toxic. Ingestioon of only a few leaves can cause very serious problems. Toxin = Grayanotoxins
- Also known as Fetterbush, Staggerbush or Maleberry
M
Macadamia Nut
- Macadamia integrifolia
- Toxin = Unknown
Madagascar Dragon Tree
- Dracaena marginata
- Toxin = Unknown
Maiden’s Breath
- Gypsophila elegans
- Toxin = Gyposenin
- Also known as Baby’s Breath
Malanga
- Colocasia esculenta
- Toxin = Insoluble calcium oxalates
- Also known as Caladium, or Elephant’s Ears
Maleberry
- Lyonia sp.
- Toxin = Grayanotoxins
- Also known as Staggerbush, or Fetterbush
Mandrake
- Mandragora sp.
- Toxin = deliriant hallucinogenic tropane alkaloids such as hyoscyamine
- The roots, foliage and unripe fruit of this plant are poisonous when eaten
Marble Queen
- Scindapsus aureus
- Toxin = Calcium oxalate crystals
- Also known as Golden Pothos
Melia (Dhrek)
- Melia azadarach
- Toxin = Tetranortriterpenes (meliatoxins)
- The fruits of this tree are poisonous to animals
Mistletoe
- Phoradendron flavescens
- Toxin = Toxalbumin, pharatoxin viscumin (Lectins, Phoratoxins)
- In particular the berries.
Monkshood
- Aconitum napellus
- Highly Toxic. Toxin = Chemical alkaloids; aconitine, mesaconitine, hypaconitine and jesaconitine
Morning Glory
- Ipomoea sp.
- Highly Toxic. Toxin = Indole alkaloids (Lysergic acid, lysergamide, elymoclavine and chanoclavine)
- All parts are poisonous, particularly the seeds.
Moss Rose
- Portulaca oleracea
- Toxin = Soluble calcium oxalates
- Also known as Wild Portulaca, Rock Moss, Purslane, Pigwee, or Pusley
Mother-In-Law’s Tongue
- Sansevieria trifasciata
- Toxin = Saponins
- Also known as Snake Plant, Golden Bird’s Nest, or Good Luck Plant
N
Naked Lady
- Amaryllis belladonna L.
- Toxin = Lycorine and other alkaloids
Nandina
- Nandina domestica
- Toxin = Cyanogenic glycosides
- Also known as Sacred Bamboo, Heavenly Bamboo
Narcissus
- Narcissus sp.
- Toxin = Lycorine and other alkaloids
- Also known as Daffodil, Jonquil, or Paper White
Nephthytis
- Syngonium podophyllum
- Toxin = Insoluble calcium oxalates
- Also known as Arrow-Head Vine, Green Gold Naphthysis, African Evergreen, or Trileaf Wonder
Nicotiana
- Nicotiana glauca
- Toxin = Nicotine
- Also known as Tree Tobacco, Tobacco, or Mustard Tree
Nightshade
- Solanum sp.
- Toxin = Solanine, saponins, atropine like substances
- Highly Toxic All parts of this plant are poisonous and ingestion may lead to Hallucinations, severe intestinal disturbances, diarrhea, drowsiness, numbness, dilation of the pupils, trembling, labored breathing, nasal discharge, rapid or weakened pulse, lack of coordination, paralysis or severe shaking of the rear legs and bloat. In some cases, nightshade poisoning can be fatal.
O
Oak (Acorns)
- Querucs sp.
Oleander
- Nerium oleander
- Highly Toxic. Toxin = Cardiac glycosides
- A common cause of poisoning by plants in dogs.
Onions
- Allium cepa
- Toxin = N-propyl disulfide
Ornamental Pepper
- Solanum pseudocapsicum
- Toxin = Solanine
- Also known as Natal Cherry, Winter Cherry, or Jerusalem Cherry
P
Painter’s Pallet
- Anthurium scherzeranum
- Toxin = Insoluble calcium oxalates
- Also known as Flamingo Plant, Flamingo Lily, Tail Flower, Oilcloth Flower, Pigtail Plant, or Flamingo Flower
Palm Lilly
- Cordyline australis
- Toxin = Saponins
- Also known as Giant Dracaena, or Grass palm
Peace Lily
- Spathiphyllum
- Toxin = Insoluble calcium oxalates
Peach
- Prunus sp.
- Toxin = Cyanogenic glycosides found in some species
- Like some other tree-fruit species, the stems, leaves and seeds contain cyanide, which is particularly toxic in the process of wilting. Symptoms of cyanide poisoning include brick red mucous membranes, dilated pupils, difficulty breathing, panting, and shock. Whilst many dog owners have fruit trees growing in their gardens without issue, it is worth clearing fallen fruit from the ground, especially if you’re dog is likely to scavange apples. Eating a large number of apple pips may cause problems, and fallen fruit often attracts wasps, which may also be a problem if the dog is stung whilst eating fruit.
Pencil Cactus
- Euphorbia milii
- Toxin = Irritant Sap (latex)
- Also known as Crown of Thorns
Peony
- Paeonis officinalis
- Toxin = Paeonol
Periwinkle
- Vinca rosa
- Toxin = Vinca Alkaloids
- Also known as Running Myrtle, or Vinca
Philodendron
- Philodendron sp.
- Toxin = Calcium oxalate crystals
Pieris
- Pieris japonica
- Toxin = Grayanotoxins
- Also known as Lily-of-the-Valley Bush, Andromeda Japonica, Fetterbush
Poinciana
- Poinciana gilliesii
- Toxin = GI irritants
- Also known as Peacock Flower, Bird of Paradise, Barbados Pride, Pride of Barbados
Pigweed
- Amaranthus retroflexus
- Toxin =
- Highly Toxic All pars of this plant are poisonous, and ingestion may lead to breathing problems, trembling, weakness, coma, and in some case death.
Poinsettia
- Euphorbia pulcherrima
- Toxin = Irritant Sap (latex)
- Poisoning is not likely to be serious, but this plant can cause skin, mouth, eye, and stomach irritation.
Portulaca
- Portulaca oleracea
- Toxin = Soluble calcium oxalates
- Also known as Wild Portulaca, Rock Moss, Purslane, Pigwee, Pusley, or Moss Rose
Potatoes
- Solanum tuberosum
- Toxin = glycoalkaloids
- The tubers of the potato plant (the part we eat) develop toxicity in parts that turn green after exposure to light. Beware of dogs picking up potatoes left lying around vegetable plots or in compot heaps.
Pothos
- Epipremnum aureum
- Toxin = Insoluble calcium oxalates
- Also known as Golden Pothos, Devil’s Ivy, Taro Vine, or Ivy Arum
Prayer Bean/Precatory Bean
- Abrus precatorius
- Toxin = Abrin (lectin or a toxalbumin) and abric acid (a glycoside)
- Also known as Rosary Pea, Buddhist rosary bead, Indian Bead, Indian Licorice, Love Bean, Lucky Bean, Seminole Bead, or Weather Plant
Pride-of-India
- Melia azedarach
- Toxin = Tetranortriterpenes (meliatoxins)
- Also known as China Ball Tree, Paradise Tree, Persian Lilac, White Cedar, Japanese Bead Tree, Texas Umbrella Tree, Bead Tree, or Chinaberry Tree. Ripe fruit (berries) most toxic but also flowers, bark and leaves.
Privet
- Ligustrum japonicum
- Toxin = Terpenoid glycosides
- Also known as amur, wax-leaf, or common privet
Q
R
Red Maple
- Acer rubrum
- Toxin = Unknown
- Also knonw as Swamp Maple, Scarlet Maple, Curled Maple, or Soft Maple
Red Sage
- Salvia miltiorrhiza
- Toxin = Pentacyclic triterpenoids
- The unripe berries of this plant are poisonous.
Rhododendron
- Rhododendron sp.
- Toxin = Grayantoxin
- Also known as Rosebay, or Azalea
Rhubarb
- Rheum rhaponticum
- Toxin = Soluble calcium oxalates
- Rhubarb leaves and raw stalks are poisonous if ingested, and may cause staggering, shaking, breathing problems, weakness, diarrhea, increased thirst and urinating, and in some cases death.
Ribbon Plant
- Dracaena sp.
- Toxin = Saponins
- Also known as Corn Plant, Cornstalk Plant, Dracaena, or Dragon Tree
S
Saddle Leaf
- Philodendron bipennifolium
- Toxin = Insoluble calcium oxalates
- Also known as Horsehead Philodendron, Cordatum, Heartleaf Philodendron, Panda Plant, Split Leaf Philodendron, Fruit Salad Plant, Red Emerald, Red Princess, or Fiddle Leaf
Sago Palm
- Cycas revoluta / zamia sp.
- Toxin = Cycasin
- Also known as Coontie Palm, Cardboard Palm, cycads and zamias
Satin Pothos
- Scindapsus pictus
- Toxin = Calcium oxalate crystals
- Also known as Silk Pothos
Schefflera
- Schefflera
- Toxin = Calcium oxalate crystals
- Also known as Umbrella Tree, Australian Ivy Palm, Octopus Tree, Starleaf
Shamrock Plant
- Oxalis sp.
- Toxin = Soluble calcium oxylates
- Also known as Good Luck Plant or Sorrel
Silver Jade Plant/Silver Dollar Plant
- Crassula arborescens
- Toxin = Unknown
- Also Known as Chinese Jade
Skunk Cabbage
- Symplocarpus foetidus
- Toxin = Insoluble calcium oxalates
- Also known as Skunk Weed, Polecat Weed, Meadow Cabbage, or Swamp Cabbage
Snake Lilly
- Iris sp.
- Toxin = Pentacylic terpenoids (zeorin, missourin and missouriensin)
- Also known as Iris, Flag, or Water Flag
Sowbread
- Cyclamen sp.
- Toxin = Terpenoid saponins
- Also known as Cyclamen
Spindle Tree
- Euonymus atropurpurea / Euonymus occidentalis
- Toxin = Alkaloids, Cardenolides
- Also known as Wahoo, or Burning Bush
Split Leaf Philodendron (Swiss Cheese Plant)
- Philodendron bipennifolium
- Toxin = Insoluble calcium oxalates
- Also known as Horsehead Philodendron, Cordatum, Heartleaf Philodendron, Panda Plant, Fiddle-Leaf, Fruit Salad Plant, Red Emerald, Red Princess, or Saddle Leaf
Staggerbush
- Lyonia sp.
- Highly Toxic. Ingestion of only a few leaves can cause very serious problems. Toxin = Grayanotoxins
- Also known as Fetterbush, or Maleberry
Sweet Pea
- Lathyrus latifolius
- Toxin = Aminoproprionitrite
- Also known as Perennial Pea, or Everlasting Pea
Sweet William
- Dianthus caryophyllus
- Toxin = Unknown irritant
- Also known as Carnation, Wild Carnation, or Pinks.
Result of ingestion usually limited to mild digestive upset.
T
Taro
- Colocasia esculenta / Caladium hortulanum
- Toxin = Insoluble calcium oxalates
- Also known as Caladium, Elephant’s Ears, or Malanga
Tobacco
- Nicotiana glauca
- Toxin = Nicotine
- Also known as Tree Tobacco, Nicotiana, or Mustard Tree
Tulip
- Tulipa sp.
- Toxin = Tulipalin A and B
U
Umbrella Tree
- Schefflera
- Toxin = Calcium oxalate crystals
- Also known as Schefflera, Australian Ivy Palm, Octopus Tree, or Starleaf
V
Vinca
- Vinca rosea
- Toxin = Vinca Alkaloids
- Also known as Periwinkle, or Running Myrtle
W
Water Hyacinth
- Eichhornia crassipes
- Toxin = Unknown
Weeping Fig
- Ficus sp.
- Toxin = fig, indian rubber plant
- Also known as fig, or indian rubber plant
Winter Cherry
- Solanum pseudocapsicum
- Toxin = Solanine
- Also known as Natal Cherry, or Jerusalem Cherry
Wisteria
- Wisteria sp.
- Toxin = Lectin, wisterin glycoside
X
Y
Yarrow
- Achillea millefolium
- Toxin = Glycoalkaloids (achillen), monoterpenes, sesquiterpene lactones
- Also known as Milfoil
Yellow Oleander Thevetia peruviana
Toxin = Cardenolides
Yew
- Taxus spp.
- Highly Toxic. The most poisonous tree native to the UK. Toxin = Taxine
- Includes other Yew species such as Japanese Yew, Western Yew etc.
Yucca
- Yucca
- Toxin = Saponins
Z
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