Guide to Dog Poisonous Plants

A

• Aconite (roots, seeds, foliage - vomiting and nausea, may harm heart function, rate)
  
• African Violet 
• African Wonder Tree (contains the toxin ricin, symptoms appear in 12 to 48 hours, can cause appetite loss, thirst, weakness, trembling, sweating, coordination and breathing problems, depression and fever. Can also result in bloody diarrhea, convulsions and coma)
  
• Alocasia (oral irritation, burning in the mouth, mouth irritation, tongue and lip irritation, excessive drooling, vomiting, trouble swallowing)
  
• Aloe Vera (Liliaceae - causes diarrhea in dogs)
  
• Almond (vomiting, painful abdomen, diarrhea)
• Amaryllis - (vomiting, pain in abdomen, tremors, heart issues, respiratory problems, lethargy, excessive salivation - can be fatal)
  
• American Yew (vomiting, painful abdomen, diarrhea)
  
• Andromeda Japonica
• Angel's Trumpet (toxicity varies by dog, causes vomiting and nausea)
  
• Angel Wings  (can be fatal, nausea and vomiting)
  
• Anemone
  
• Apple (seeds are toxic since they contain cyanide, can cause shock, panting, trouble breathing, dilated pupils, red mucous membranes))
  
• Apple Leaf Croton
• Apricot (pits - cause vomiting, painful abdomen, diarrhea - can be fatal)
• Arborvitae (dog poisonous plants toxic in quantity, can result in dog skin allergy)
  
• Arrowgrasses (leaves are toxic)
  
• Asian Lily (Liliaceae)
• Arrowhead vine (mouth swelling, breathing problems, gastrointestinal)
  
• Asparagus Fern  (vomiting, pain in abdomen, tremors, heart issues, respiratory problems)
• Atropa belladonna
  
• Australian Nut
• Autumn Crocus (vomiting, diarrhea, kidney failure, bone marrow depression, can cause death in dogs)
  
• Avocado (pit and fruit, diarrhea, vomiting - can be fatal)
  
• Azalea (variety of dog poisonous plants that can cause vomiting, pain in abdomen, tremors, heart issues, respiratory problems - fatal in large amounts)
  

• Baby's Breath (can cause vomiting and diarrhea)
• Baby Doll Ti Plant (can cause vomting with or without blood, anorexia, hypersalivation, depression)
  
• Balsam pear (vomiting, painful abdomen, diarrhea)
• Baneberry
• Barbados Aloe (can change urine color to red, vomiting)
• Barbados Lily (vomiting, salvation, diarrhea, convulsions in larger quantities, low blood pressure, tremors, cardia arrhythmia)
  
• Barbados Pride
  
• Barilla
• Bead Tree (diarrhea, vomting, salivation, weakness, seizures, depression, fruit most toxic part of plant)
  
• Begonia (tubers are toxic, can cause oral irritation, intense irritation of the mouth and burning, irritation on the tongue and lips, excessive drooling, vomiting, difficulty swallowing)
• Bergamot Orange (vomiting, diarrhea, depression, sensivity to light in some cases)
  
• Bird of Paradise  (seeds cause vomiting, pain in abdomen, tremors, heart issues, respiratory problems)
• Bird’s Tongue Flower (some nausea, vomiting, drowsiness)
• Bishop's Weed (irritation to the mouth, burning in the mouth, burning tongue and lips, vomting, difficulty swallowing, excessive drooling)
  
• American Bittersweet (vomiting and diarrhea)
  
• European Bittersweet (vomiting and diarrhea)
• Black Locust
• Bleeding heart (foliage and roots)
  
• Bloodroot
• Bluebell (toxic to pets in quantity)
  
• Boston Ivy (mouth swelling, breathing problems, gastrointestinal upset)
• Box (leaves)
• Boxwood (twigs, leaves are poisonous to dogs, can cause lethargy, skin irritation, upset stomach, dog heart failure, excitability)
  
• Bracken (unique species of dog poisonous plants that can cause thiamine deficiency, blindness, tumors)
  
• Branching Ivy
• Broom
  
• Buckeye (vomiting, painful abdomen, diarrhea if consumed in quantity)
  
• Buddhist Pine
• Burning Bush (toxic to dogs in quantity, vomiting, nausea, can result in dog skin allergy)
  
• Buttercup (toxicity varies by dog, may cause digestive issues, and skin irritation)

• Caladium (mouth swelling, breathing problems, gastrointestinal upset)
• Calamondin Orange (vomiting, diarrhea, depression, possible light sensitivity)
  
• Calico bush (dog toxic plant in larger quantities)
• California Ivy (vomiting, abdominal pain, hypersalivation, diarrhea)
  
• Calla Lily (mouth swelling, breathing problems, gastrointestinal upset)
• Cape Jasmine (mild vomiting and possible diarrhea, hives)
  
• Cardinal flower
• Cardboard Palm (can cause liver failure)
• Carnations (mildly toxic, causes mild gastrointestinal signs, mild skin irritation)
  
• Carolina Jessamine
• Casper Spurge
  
• Castor Bean (leaves and seeds cause vomiting and diarrhea)
• Ceriman (aka Cutleaf Philodendron - diarrhea, mouth irritation, skin irritation)
  
• Charming
• Chenille Plant
  
• Cherry (seeds contain the dog poison cyanide and can cause vomiting, painful abdomen, diarrhea)
• Cherry laurel
  
• Chinaberry Tree (causes dog convulsions)
  
• Chinese Evergreen
• Chock cherries
• Christmas Berry
  
• Christmas Rose (poisonous leaves and roots, toxic to dogs in quantities that are large)
  
• Christmas Tree Pine Needles
• Chrysanthemum (toxic leaves, stem and causes skin reaction, vomiting, diarrhea, hypersalivation)
• Cineraria
  
• Clematis (dog poisonous plants that result in gastrointestinal tract problems, nervous system issues. Can result in dog skin irritation)
  
• Cocoa husks or mulch (same as chocolate poisoning in dogs, hyperactivity, increased heart rate - fatal in larger quantities). Some cocoa mulch products are labeled as safe for pets and have toxins removed.
  
• Common privet
  
• Cordatum
• Coriaria (causes dog convulsions)
• Corn Cockle (dog toxic plant if ingested in large quantity)
  
• Corn Plant (aka Cornstalk Plant)
• Cornstalk Plant (aka Corn Plant)
• Cowbane
• Cowslip
• Creeping Charlie  (vomiting, pain in abdomen, tremors, heart issues, respiratory problems)
• Creeping fig (causes skin reaction)
• Crocus (Anemone species, colchicum autumnale)
• Croton (codiameum species)
• Crowfoot
  
• Crown of Thorns (vomiting, pain in abdomen, tremors, heart issues, respiratory problems)
• Crown Vetch
• Cuckoo pint (dog poisonous plants that cause skin allergy, vomiting and nausea)
  
• Cutleaf Philodendron (aka Ceriman)
• Cycads: (Sago Palm, Cardboard Palm)
  
• Cyclamen (abnormal heart rhythms, seizures, convulsions, paralysis, and digestive issues. Can lead to death.)
  

• Daffodil (vomiting and diarrhea - can be fatal, especially the bulbs are toxic)
• Dahlia (mild gastrointestinal symptoms, mild skin irritation)
  
• Daisy (vomiting, diarrhea, hypersalivation, lack of coordination, skin irritation)
  
• Daphne (can result in dog skin dermatitis, kidney problems, digestives issues)
  
• Datura
• Deadly nightshade (hypersalivation, lack of appetite, gastrointestinal issues, diarrhea, drowsiness, depression, confusion, behavioral change, weakness, dilated pupils, slow heart rate)
  
• Death Camas
• Delphinium (Larkspur) - (vomiting and diarrhea - seeds, young plants are poisonous)
• Desert Azalea (vomiting, diarrhea, anorexia, depression, irregular heartbeat, death)
• Desert Rose (vomiting, diarrhea, anorexia, depression, irregular heartbeat, death)
  
• Devil's Fig (toxic to dogs in large quantities)
  
• Devil's Ivy (mouth irritation, mouth irritation, tongue and lip irritation, excessive drooling, vomtiing, difficulty swallowing)
  
• Dieffenbachia (can cause death, diarrhea, mouth irritation, skin irritation, seizure, tremors, balance loss, asphyxiation, can result in death)
• Dock
• Dog Daisy
• Dog Hobble
• Dogbane Hemp
  
• Dologeton (toxicity varies by dog)
• Dracaena
  
• Dragon Tree (diarrhea, vomiting)
  
• Dumbcane (mouth swelling, breathing problems, gastrointestinal upset - can cause death)
  
• Deadly Nightshade (See Nightshade)
• Dutchman' breeches (toxicity varies by dog)
• Dumb Cane (diarrhea, mouth irritation, tremors, balance loss, seizures, can cause death)
  
• Dwarf morning glory (dog toxic plant in quantity)
  

• Easter Cactus
• Easter Rose
• Eastern Star
  
• Echium (dog poisonous plants if eaten in larger amounts, can result in dog skin allergies)
• Elder (toxic bark, roots, leaves)
  
• Elderberry (nausea, vomiting)
  
• Elephants Ear (mouth swelling, breathing problems, gastrointestinal upset - can cause death)
  
• Emerald Duke (mouth swelling, breathing problems, gastrointestinal upset)
• Emerald Feather (aka Emerald Fern)
• English Holly (vomiting, painful abdomen, diarrhea)
• English Ivy (berries and leaves are poisonous to dogs, gastrointestinal problems, toxic to digestive tract, can result in skin irritation and mild discomfort)
  
• English Yew (vomiting, painful abdomen, diarrhea)
• Eucalyptus (salivation, vomiting, diarrhea, depression, weakness)
• European Bittersweet
  
• European Holly
  
• European spindle (in large quantities)
• Everlasting Pea
  
• Exotica
  

F

• False Bittersweet
  
• False Flax
• False hellebore (nausea and vomiting)
• False Queen Anne's Lace
  
• Fan Weed
• Feather Geranium
• Fern Palm
• Fetter Bush
  
• Field peppergrass
  
• Fiddle-Leaf Philodendron
• Flab
  
• Flamingo Plant
• Flannel flower (if large amounts are eaten)
• Flax (in larger quantities)
• Fleabane
  
• Florida Beauty
• Florists Calla
  
• Foxglove: Garden and wild flower with poisonous leaves and seeds - (vomiting and diarrhea)
• Franciscan Rain Tree
  
• Fruit Salad Plant (diarrhea, oral irritation, skin irritation)
  

G

• Garden Calla
• Garden Chamomile
• Garden Hyacinth
• Gardenia
• Garlic
  
• Gaultheria (poisonous in large quantities)
• Geranium (vomiting, anorexia, depression, skin irritation)
• Geranium-Leaf Aralia
  
• German Ivy (digestive problems, skin irritation)
• German primula (skin allergy)
• Giant Dracaena
• Giant Dumb Cane
• Giant Hogweed
• Glacier Ivy
• Gladiolas (salivation, vomiting, drooling, lethargy, diarrhea, part that is toxic to dogs, the bulb, may not be present in flower arrangements)
  
• Glory Lily (nausea and vomiting)
  
• Gold Dieffenbachia
• Gold Dust Dracaena
• Golden Birds Nest
  
• Golden chanin (sees are toxic, causes nausea and vomiting)
  
• Golden Pothos
• Golden Ragwort
  
• Good Luck Plant
  
• Granny bonnets- toxic in quantity
• Grapefruit
  
• Grass Palm
  
• Greater Ammi
  
• Green Gold Nephthysis
• Ground Apple
  
• Ground Cherry (vomiting and diarrhea)
• Ground Set
  

H

• Hahn's self branching English Ivy
• Hashish
• Hawaiian Ti
  
• Heartleaf Philodendron (mouth swelling, breathing problems, gastrointestinal upset)
• Heavenly Bamboo
• Hellobores
• Heliotrope
  
• Poison Hemlock and Western Water Hemlock
• Holly
• Henbrane
• Hercules Club
  
• Hibiscus
• Hills of Snow
  
• Holly (berries are toxic, cause upset stomach, seizure, loss of balance)
• Hops
  
• Horse chestnut (vomiting, painful abdomen, diarrhea - toxic in larger quantities)
  
• Horsehead Philodendron
• Horseweed
  
• Horse nettle
• Hosta (symptoms are vomiting, diarrhea and depression)
• Hortensia
• House Pine
  
• Hurricane Plant (diarrhea, mouth irritation, skin irritation)
  
• Hyacinth (dog poisonous plant in quantity, skin allergy)
  
• Hydrangea

I

• Impala Lily
• Indian Apple
• Indian Borage
• Indian Hemp
• Indian Pink
• Indian Rubber Plant
• Inkberry
  
• Indian Tobacco (vomiting and diarrhea)
• Indian Turnip (vomiting and diarrhea)
• Iris (roots are toxic, causes digestive system upset, skin irritation)
• Ivy (plant is toxic when consumed in larger quantity)
  

J

• Jack-in-the-pulpit
  
• Jade
  
• Jack in the pulpit (mouth swelling, breathing problems, gastrointestinal upset, hallucinations)
  
• Japanese Plum (vomiting, painful abdomen, diarrhea)
• Japanese Show Lily
• Japanese Spindle (dog poisonous plants when eaten in larger quantity)
  
• Japanese Yew (also called Yew)
• Jasmine (dog plant toxicity varies by dog)
• Jerusalem Cherry (All parts of plant are toxic to dogs. Can cause vomiting, pain in abdomen, tremors, heart issues, respiratory problems)
• Jerusalem Oak
  
• Jessamine (sap and berries are toxic to dogs, can cause digestive problems, nervous system problems, can cause death)
  
• Jimson Weed (thorn apple - toxicity varies by dog - can cause death)
• Jonquil (bulb is toxic)
• Juniper
  

K

• Kaffir Lily
• Kalanchoe (causes depression, teeth grinding, rapid breathing, paralysis, lack of muscle coordination/ataxia)
• Kale (causes anemia, possible source of fertility issues)
  
• Kingcup (toxic in larger quantities)
• Kiss-me-quick
• Klamath Weed
• Kudu Lily
  

L

• Laburum (toxic leaves and seeds - causes vomiting and nausea)
  
• Lace Fern
• Lacy Tree
• Lady-of-the-night
  
• Lantana (causes vomiting and nausea)
  
• Larkspur (vomiting and diarrhea)
• Laurels (toxic in larger quantities)
• Leatherflower
• Leek
• Lemon
  
• Lenten Rose (toxic in larger quantities)
• Leopard Lily (causes vomiting, nausea and skin allergy)
• Leyland cypress (toxic in larger quantities, can cause a skin reaction or allergy)
  
• Lillies (Lilum - harmful if large amount is consumed)
• Lily of the Palace
  
• Lily of the Valley (Convallaria majalis, excessive drooling, nausea, diarrhea, decreased heart rate, cardiac arrhythmia, seizures - seek emergency medical attention)
• Lime (vomiting, diarrhea, depression, possible light sensitivity)
  
• Lobelia (toxic in large quantities, may cause a skin allergy in dogs)
  
• Locoweek (toxicity varies by dog, dog hallucinogen)
• Locust (causes weakness and nausea)
• Lord-and-ladies
  
• Lupines (dog plant toxicity varies by dog - can be toxic in larger quantities)
  

M

• Macadamia Nut
• Machineel Tree
  
• Madagascar Dragon Tree
• Maidens Breath
  
• Majesty (dog poisonous plants with symptoms such as mouth swelling, breathing problems, gastrointestinal upset)
• Malanga (mouth swelling, breathing problems, gastrointestinal upset)
• Maleberry
  
• Mallow (nausea and vomiting)
• Maple Tree
  
• Marble Queen (mouth swelling, breathing problems, gastrointestinal upset)
• Marijuana (dog hallucinogen)
• Marsh marigold (toxic in larger quantities)
  
• Matrimony vine (toxicity varies by dog)
• May apple (toxicity in dogs varies by dog)
• Mayweed
  
• Mauna Loa Peace Lily (also called Peace Lily)
• Meadow rue (toxic in larger quantities)
• Meadow Saffron
• Medicine Plant
  
• Melanga
• Mescal bean (toxicity varies by dog)
• Mexican Breadfruit
• Mezereon
  
• Mild vetch
• Milfoil
  
• Milkweed (toxic in larger quantities, may cause a skin allergy in dogs)
  
• Mistletoe "American"(common family of dog poisonous plants during the Christmas holiday - has toxic berries, causes problems in the gastrointestinal tract such as serious vomiting and diarrhea, skin irritation and a lowered heart rate, lower blood pressure, irritable and irregular behavior. Can be fatal for puppies that eat Mistletoe berries.)
• Mock Azalea
  
• Mock orange (vomiting, painful abdomen, diarrhea)
• Mole Bean Plant
  
• Monkey Pod (vomiting, painful abdomen, diarrhea)
• Monkshood (causes stomach upset and nervous behavior. May affect the heart)
  
• Moonseed (toxicity varies by dog)
• Moonweed (causes dog convulsions)
• Morning Glory (dog hallucinogen, can also cause gastrointestinal upset, agitation, tremors, disorientation, ataxia, anorexia)
• Morning-noon-and-night
  
• Mother-in-Law ((mouth swelling, breathing problems, gastrointestinal upset)
• Moroccan broom (toxic in larger quantities)
• Moss Rose
  
• Mother-in-law tongue (toxic leaves that can cause diarrhea, irritation around the mouth, skin irritation, tremors, seizures, asphyxiation, balance problems, can cause death)
• Mother of Millions
• Mother-in-Law
  
• Mountain Laurel (toxic to dogs in larger quantities)
  
• Mountain mahogany
  
• Mulch mixed with Cocoa Beans
• Mum (vomiting, diarrhea, hypersalivation, lack of coordination, skin irritation)
  
• Mushroom (toxicity varies by type)
  
• Mustards
  

N

• Naked Ladies (dog poisonous plants that can cause nausea and vomiting)
• Nandina
  
• Narcissus (can cause skin irritation, diarrhea and vomiting)
  
• Needlepoint Ivy (Causes gastrointestinal symptoms and skin irritation)
  
• Nephthytis
• Nerine
  
• Neththyis (mouth swelling, breathing problems, gastrointestinal upset)
• Nicotiana: Another garden flower with toxic leaves. (Can cause vomiting and affects the central nervous system.)
  
• Nightshade: A wildflower with toxic berries and leaves (vomiting, pain in abdomen, tremors, heart issues, respiratory problems)
• Norfolk Island Pine
  
• Nutmeg (dog hallucinogen)
• Nux vomica (causes dog convulsions)

O

• Oak Tree (toxic acorns and foliage - causes problems with kidneys. Symptoms can appear several days after ingesting these dog poisonous plants)
• Octopus Tree
• Oilcloth Flower
  
• Oleander (causes heart issues, digestive problems. Very poisonous plant to dogs and can cause death)
  
• Onion (Never ever feed dogs onions or products that contain onions, can cause anemia)
• Orange (vomiting, diarrhea, depression, sensitivity to light, oils are toxic to dogs)
  
• Orange Day Lily

P

• Pacific Yew
• Painter's Palatte
• Palm Lily
  
• Panda Plant
• Paper White
• Paraguayan Jasmine
  
• Parlor Ivy (mouth swelling, breathing problems, gastrointestinal upset)
• Paspalum (toxic seeds, can cause skin irritation)
• Pasque flower (toxic in larger quantities)
  
• Peace Lily (Mauna Loa Peace Lily) - (mouth swelling, breathing problems, gastrointestinal upset)
• Peach (leaves and pits are toxic, pit contains cyanide - results in vomiting, painful abdomen, diarrhea)
• Peacock Flower
  
• Pencil cactus
• Pie Plant
• Pieris
• Pig Lily
• Pigtail Plant
• Perennial Pea
  
• Peruvian lily (toxic in large quantity, may result in dog skin allergy)
  
• Peony (roots are poisonous to dogs)
  
• Periwinkle (dog hallucinogen)
• Peyote (dog hallucinogen)
• Pie Plant
  
• Philodendron Pertusum (contains insoluble calcium oxalate crystals that can cause irritation to the mouth, esophagus and stomach. Can results in excessive salivation, vomiting and difficulty swallowing.)
• Pigweed (varied toxic effects)
• Pineapple broom (poisonous to dogs in larger quantities)
• Plantain Lily
• Plum
  
• Plumosa Fern
• Poinciana
  
• Poinsettia (Mildly toxic to dogs. Includes toxic stems, sap and leaves, these dog poisonous plants can cause diarrhea cramps, delirium. The sap causes eye irritation if touches the eyes and possibly skin irritation)
• Poison Daisy
• Poison Hemlock
• Poison Ivy (toxic bark, fruit and leaves. If touches skin can cause dog skin blisters)
  
• Poison hemlock (varied dog toxic effects on the nervous system, possible skin irritation/dermatitis, can cause death)
• Poison Oak (toxic bark, leaves and fruit, may cause skin irritation)
• Poison Parsnip
  
• Poison Sumac (can cause dog skin blisters)
• Pokeroot (can cause vomiting and nausea in dogs)
  
• Pokeweed: The pokeweed is a dog poisonous plant found in fields that have toxic roots, berries and seeds - (vomiting and diarrhea)
• Poppy (dog hallucinogen in larger quantities)
• Portulaca
  
• Potato (green skins and sprouts - always cook for dogs)
  
• Pothos (Scindapsus, Epipremnum) - (mouth swelling, breathing problems, gastrointestinal upset)
• Pot Mum (vomiting, pain in abdomen, tremors, heart issues, respiratory problems)
• Prayer Bean
  
• Precatory Bean
• Prickly poppy (toxic in larger quantities)
• Pride-of-India
  
• Primrose (leaves are toxic, has an upset stomach, may cause skin irritation)
  
• Privet (toxic leaves, can cause vomiting, painful abdomen, diarrhea, toxic in larger amounts)
• Purslane
  

Q

• Queensland Nut

R

• Racemose asparagus
  
• Ragwort (can cause death in very small amounts, results in kidney failure and liver damage. Poisoning not reversible)
  
• Rain Tree (vomiting, painful abdomen, diarrhea)
• Raisins (ingesting raisins for dogs can cause kidney failure, consumption can be fatal)
• Rape (dogs that ingest Rape can go blind, can harm the nervous system, stomach disorders, respiratory problems)
• Ranger's Button
  
• Rattle box
  
• Red Emerald
• Red-ink plant (poisonous if consumed, results in vomiting and nausea)
  
• Red Lily
• Red-Margined Dracaena (also called Straight-Margined Dracaena)
• Red Princess (mouth swelling, breathing problems, gastrointestinal upset)
• Rhododendron (this dog poison plant results in vomiting, nausea, vomiting, respiratory problems and coma)
• Rhubarb (leaves are toxic, varied dog toxic effects including coma and convulsions. Can cause death in dogs)
  
• Ribbon Plant (Dracaena sanderiana)
• Ridderstjerne
  
• Ripple Ivy (vomiting, pain in abdomen, tremors, heart issues, respiratory problems)
• Rock Moss
• Roman Chamomile
  
• Rosary pea
• Rosebay (Results in vomiting and nausea)
• Rose periwinkle (dog poison plant in larger quantity)
• Rose of China
• Rose of Sharon
  
• Rubrum Lily
• Rue (Can cause skin allergy, vomiting and nausea)
• Running Myrtle
  

S

• Sabi Star
• Sacred Bamboo
  
• Saddle Leaf Philodendron - (mouth swelling, breathing problems, gastrointestinal upset)
• Sago Palm (can cause death related to liver failure, this is a plant that dogs like to chew)
  
• Satin Pothos
• Savin (toxic in larger quantities)
  
• Schefflera (Brassaia actinophylla - plant toxic to dogs in larger quantity, possible cause of skin allergy)
• Seaside Daisy
• Shamrock Plant
• Shatavari
• Show Daisy
  
• Silkweed (plant toxic to dogs if consumed in large quantity)
• Silver Dollar
• Silver Jade Plant
  
• Skunk cabbage (vomiting and diarrhea)
• Smartweeds
• Snake Lily
• Snake Plant
  
• Snowdrops
  
• Snow-on-the-mountain
• Soapberry (vomiting and diarrhea)
• Solomon's Lily
  
• Solomon's seal (plant poisonous to dogs if large amounts are consumed)
  
• Sorghum
• Sowbread
• Spanish Thyme
  
• Spider Mum (vomiting, pain in abdomen, tremors, heart issues, respiratory problems)
• Spider Plant (salivation and vomiting)
  
• Spinach (varied dog toxic effects)
• Spindle Tree
  
• Split Leaf (dog poisonous plants that result in mouth swelling, breathing problems, gastrointestinal upset)
• Spotted Dumb Cane
• Sprangeri fern (vomiting, pain in abdomen, tremors, heart issues, respiratory problems)
• Spruce Tree
• Spurge
• Squill (dog poisonous plants in larger quantities)
• Staggerbush
• Starch Root
  
• Starflower (pet poison plant in large quantity)
  
• Stargazer Lily
• Starleaf
  
• St Johns Wort (dog poison plant harmful if ingested in large quantity)
  
• Star of Bethlehem (dog poisonous plants in larger quantities)
• Stinking Chamomile
• Straight-Margined Dracaena
  
• String of Pearls
  
• Striped Dracaena
• Sunburned potato (varied dog toxic effects)
• Superb Lily
  
• Sweet Pea (toxic in large quantity)
• Sweet Potato Vine
  
• Sweetheart Ivy
• Sweet William
  
• Swiss Cheese Plant (results in mouth irritation and diarrhea, may result in skin irritation)
  

T

• Tail Flower
• Taro
  
• Taro Vine (mouth irritation and diarrhea, skin irritation)
• Texas Umbrella Tree
  
• Tiger Lily
• Ti-plant
  
• Tobacco (toxic in larger quantities)
• Tobira
  
• Tomato Plant/Vine (varied dog toxic effects such as hypersalivation, inappetence, severe gastrointestinal upset, diarrhea, drowsiness, depression, confusion, behavioral change, weakness, dilated pupils, slow heart rate)
• Tree Philodendron
• Tree Tobacco
• Tropic Snow Dumbcane
• True Aloe
• Trumpet Lily
  
• Tuberous begonia - (mouth swelling, breathing problems, gastrointestinal upset)
• Tulip (Narcissus bulbs - can result in dog skin allergy as well as intense gastrointestinal irritation, drooling, loss of appetite, depression of the central nervous system, convulsions, cardiac abnormalities)
  

• Umbrella Tree
  
• Umbrella Plant (vomiting, pain in abdomen, tremors, heart issues, respiratory problems)

V

• Variable Dieffenbachia
• Variegated Philodendron
• Varnish tree (Can result in dog skin blisters on the skin)
  
• Velvet grass
• Vinca rosea (causes vomiting and diarrhea and affects the central nervous system)
• Virgin's Bower
  

W

• Wahoo
• Wake Robin
  
• Walnut
• Wandering Jew (skin irritation)
  
• Warneckei Dracaena
• Water Flag
  
• Water hemlock (varied dog toxic effects, causes convulsions in dogs)
• Water Hyacinth
• Wax-Leaf
  
• Wax Tree (can cause dog skin blisters)
  
• Weeping Fig (causes skin reaction)
• Western Black locust yew (vomiting, painful abdomen, diarrhea)
• Western Yew
• White Heads
• Wild Arum
  
• Wild black cherry (vomiting, painful abdomen, diarrhea)
• Wild Calla
• Wild Carnation
• Wild Coffe
  
• Wild radish
• Windflower (dog poison plant in large quantities)
• Winterberry
  
• Winter Cherry
  
• Wisteria (poison seeds and pits - vomiting and diarrhea)
• Wolfsbane (vomiting and nausea)
  
• Wood Lily
• Woody aster
• Woody nightshade (nausea and vomiting)
  

Y

• Yarrow
  
• Yesterday, Today, Tomorrow
• Yellow jessamine
• Yellow oleander
• Yellow pine flax
• Yew (also called Japanese Yew - poisonous foliage and berries - dog poisonous plants that cause abdominal cramps, drooling, vomiting. The leaves/foliage is more toxic than berries. Can cause sudden death. Florists have begun using it in holiday wreaths, all parts of teh plant contain the toxic alkaloid taxines.)
• Yew Pine
  
• Yucca