Flowers & Plants to Avoid With Dogs, Cats & Other Pets [89+ Garden Items a-z List]


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.

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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