HomeNewsMay 26, Plants Toxic to Dogs: Poisonous plants to Avoid When Owning...

    May 26, Plants Toxic to Dogs: Poisonous plants to Avoid When Owning a Dog

    By Janice A. Jones | Last Updated May 26,2023

    With over 700 plants toxic to dogs, it’s hard to know how to protect your vulnerable little dog.

    Luckily, not all of those plants are fatal if swallowed, but many can be so it is important to consider which plants you allow inside your home and which ones are allowed to grow in your garden.

    Puppies are particularly vulnerable because they like to explore everything they see and smell with their mouths.

    Many plants on this list are considered houseplants.  If you grow any of these, be sure to place them in a location that is inaccessible to your dogs.

    Plants Toxic to DogsPlants Poisonous to Dogs

    have compiled an alphabetized list of many common household plants as
    well as outdoor greenery that can cause havoc with your dog if he
    decides to ingest them.

    Signs of toxicity can range from mild,
    to severe, to even fatal, so before you shop for that lovely greenery
    that makes a house a home, consider the list below.  

    At the end of this
    list of plants toxic to dogs, you will find several links to sites with
    additional information on plants poisonous to dogs.

    Plants Toxic To Dogs

    Aloe Plant

    Aloe Vera is a plant poisonous to dogs.Aloe Vera

    Scientific Name: Aloe barbadensis miller.

    Other Names:  Chinese Aloe, Indian Aloe, True Aloe, Barbados Aloe, Burn Aloe, First Aid Plant

    The Aloe plant that many people keep to use as a remedy for burns is one of those common plants toxic to dogs. It grows wild in tropical climates but in cooler climates, it is considered a houseplant.

    It that contains a bitter yellow substance which causes vomiting, depression, and diarrhea. 

    Other symptoms include loss of appetite, tremors, and change in urine color.

    American Holly

    American Holly is a plant toxic to dogsAmerican Holly

    Other Names: English Holly, European Holly, Oregon Holly, Inkberry, Winterberry

    Scientific Name: Ilex opaca

    This plant grows outdoors, but is also a popular holiday houseplant. It contains the toxic saponins which can cause severe gastrointestinal upset in the form of vomiting and diarrhea.

    If your dog ingests this plant, he’s likely to droll, shake his head, and smack his lips due to the injury he’s likely to sustain from chomping on the spiny leaves. 


    Amaryllis also is known as Belladonna lily, Saint Joseph lily, Cape Belladonna, Naked LadyAmaryllis

    Other Names Belladonna lily, Saint Joseph lily, Cape Belladonna, Naked Lady
    Scientific Name: Amaryllis sp.

    This lovely garden plant is also very popular around Christmas, but toxic to cats and dogs. 

    The bulb is the most toxic, so once the flowers finish for the holiday, do not leave the bulb where your dog could get it. 

    Amaryllis plants are poisonous to dogs because of the lycorine, a serious toxin to many animals and humans.

    Symptoms of a toxic reaction include vomiting, depression, diarrhea, abdominal pain, hyper-salivation, anorexia, and tremors.

    Asparagus Fern

    Asparagus Fern also is known as Asparagus, Emerald Feather, Emerald Fern, Sprengeri Fern, Plumosa Fern, Lace Fern, Racemose Asparagus, ShatavariAsparagus Fern

    Other Common Names: Asparagus, Emerald Feather, Emerald Fern, Sprengeri Fern, Plumosa Fern, Lace Fern, Racemose Asparagus, Shatavari
    Scientific Name: Asparagus densiflorus cv sprengeri

    The asparagus fern is a common plant found indoors and in warmer climates grows outdoors.

    It is toxic to both dogs and cats if they ingest the berries of the plant.

    Vomiting, diarrhea and/or abdominal pain can result. Allergic dermatitis or skin inflammation can occur if an animal is exposed repeatedly. 

    Autumn Crocus

    Autumn Crocus or Meadow Saffron is toxic to dogsAutumn Crocus

    Other Names: Meadow Saffron
    Scientific Name: Colchicum autumnale

    There are two common crocus plants, the familiar early spring bloomer, a member of the iris family, and the autumn crocus part of the lily family.

    The spring crocus rarely causes symptoms more serious than vomiting and diarrhea in dogs.

    The autumn crocus contains colchicine, a highly poisonous alkaloid. Ingestion of any part of this plant can cause severe, bloody vomiting and diarrhea, bone marrow damage, shock, kidney and liver damage and respiratory failure.

    If unsure of the plant species, immediately take the dog for medical attention.

    Initial symptoms may be slight or delayed for days.

    Azalea / Rhododendron

    Pink Azalea BushAzalea / Rhododendron

    Other Names: Rosebay, Rhododendron
    Scientific Name: Rhododendron spp

    This popular garden plant is not only toxic to dogs, but  also dangerous for cats, horses, goats and sheep–and ingestion of just a few leaves can cause serious problems.

    Members of the Rhododendron family contain substances known as grayantoxins,  which are responsible for all the symptoms.

    Among the more common plants toxic to dogs, symptoms that you might notice include digestive upset, excessive drooling, loss of appetite, diarrhea, colic, depression, weakness, loss of coordination, stupor, leg paralysis and weak heart rate.

    The dog may become comatose and die.

    Baby’s Breath

    Baby's Breath or Maiden's Breath as it is often called, is a plant poisonous to dogs.Baby’s Breath

    Other Names: Maiden’s Breath
    Scientific Name: Gypsophila elegans

    This sweet white filler of many a floral arrangement seems innocent enough, but not so innocuous when it comes to your pet’s digestion.

    Dogs that tend to eat indoor arrangements can come in contact with this plant which causes vomiting and diarrhea.

    More of a problem in cats, we’ve included this in our plants toxic to dogs list because some dogs love to investigate fresh flower arrangements.


    The Begonia comes in many varieties and goes by many different names, but all of them are poisonous to dogs.Begonia

    Other Names: Thousands of different hybrids of this plant
    Scientific Name: Begonia spp.

    This popular garden and container plant is toxic to both dogs and cats.

    The tubers or root areas are the most toxic part.

    Symptoms of poisoning include oral burning and irritation to the mouth, tongue and lips, vomiting, and difficulty swallowing.

    The dog is likely to be drooling as well. 


    The buttercup, a common field weed is dangerous to dogs.Buttercup

    Other Names: Butter Cress, Figwort
    Scientific Name: Ranunculus sp.

    This dainty yellow flower isn’t particularly popular in home gardening, but the buttercup is a prolific weed that thrives in less than ideal conditions.  You and your pup are likely to encounter some if you spend any time outdoors. 

    Symptoms include drooling, vomiting, diarrhea, weakness, tremors, seizures or the appearance of blisters in the mouth, signaling that your pup may have eaten too much buttercup.

    Fortunately, buttercups have an extremely bitter taste that often causes a dog to stop chewing long before he’s eaten enough to cause damage.

    Castor Bean

    Castor Bean or Castor Oil Plant, Mole Bean Plant, African Wonder Tree is poisonous to dogs.Castor Bean

    Other Names: Castor Oil Plant, Mole Bean Plant, African Wonder Tree, 
    Scientific Name: Ricinus communis

    A fast growing plant that can be found along paths and wooded areas, the beans are highly toxic. 

    If ingested they cause oral irritation, burning, increased thirst, vomiting, diarrhea, kidney failure, and convulsions and death. 

    As little as one ounce of seeds can be fatal.  

    Considered an invasive plant by many,this is not one of those plants you want growing in your yard.


    The Chrysanthemum plant is a Fall blooming perennial that comes in numerous varieties and many colors. It is toxic to dogs.Chrysanthemum

    Other Names: Daisy, Mum;
    Scientific Name: Chrysanthemum spp.

    Dogs and cats may still be drawn to this lovely fall flowering plant.  It’s not likely to cause death, but it is a popular plant and can cause quite a bit of discomfort.

    In certain cases, depression and loss of coordination may also develop if enough of any part of the plant is consumed.

    The most common symptoms include vomiting, diarrhea, dermatitis, and excessive salivating. 



    Other Names: Sowbread

    Scientific Name: Cycamen spp.

    Cyclamen or Sowbread is a beautiful flowering plant that is toxic to dogs and cats.

    Grown indoors as a house plant or outside as a garden plant, the roots of these plants can be deadly.  

    If ingested, this plant can cause increased salivation, vomiting and diarrhea.

    If an animal ingests a large amount of the plant’s tubers below the soil, they can suffer heart rhythm abnormalities, seizures and even death. 



    Other Names: Narcissus, Jonquil, Paper White
    Scientific Name: Narcissus spp

    I can’t image a dog eating these but puppies are attracted to these pretty flowers that remind us that spring is here.

    The flowers contain lycorine which is a substance that can trigger vomiting.

    The bulbs are the most dangerous. 

    Ingesting the bulbs will cause vomiting, salivation, and diarrhea. 

    If the dog ingests enough, it can cause convulsions, low blood pressure, tremors and heart arrhythmia.  



    Other Names:  Giant Dumb Cane, Dumbcane, Exotica, Spotted Dumb Cane, 

    Scientific Name: Dieffenbachia spp.

    Dieffenbachia which is commonly called, Dumb Cane, Tropic Snow or Exotica is toxic to dogs and cats if ingested or even tasted. 

    If the plant is ingested, oral irritation can occur, especially on the tongue and lips.

    This irritation can lead to increased salivation, vomiting and difficulty swallowing.

    Elephant Ear

    Elephant EarElephant Ear

    Other Names:  Caladium, Taro, Pai, Ape, Cape, Via, Via sori, Malanga

    Scientific Name: Caladium hortulanum

    Elephant ear also called Caladium, contains a chemical similar to that in dieffenbachia.  

    The toxic reaction to elephant ear is similar and includes oral irritation to the tongue and lips, increased salivation, and difficulty swallowing and vomiting.

    English Holly

    English HollyEnglish Holly

    Other Names: American Holly, European Holly, Oregon Holly, Inkberry, Winterberry
    Scientific Name: Llex opaca

    The red berries may be attractive to your dog and they are poisonous, but so is the bark, leaves and seeds.

    The poison found in holly is theobromine, an alkaloid similar to caffeine. 

    This toxin is also found in chocolate, another food that dogs should not eat.

    Ingesting this plant can cause diarrhea, vomiting and depression.



    Scientific Name: Gladiolus species

    Many people grow these in the garden and they also make a popular choice in floral arrangements. 

    The bulb is the most toxic to dogs and if eaten will cause salivation, vomiting, drooling, lethargy and diarrhea. 

    The moral of the story:  Don’t let your dog help you plant those bulbs!



    Other Names: Rose of Sharon, Rose of China
    Scientific Name: Hibiscus syriacus

    Also known as the Rose of Sharon, this lovely flower is on our list of plants toxic to dogs. 

    The toxic principles are unknown, but if ingested, the dog can experience gastrointestinal symptoms such as loss of appetite, nausea, vomiting and diarrhea. 

    If symptoms are severe, dehydration can occur and you should take your dog to the veterinarian for treatment.



    Other Names: Plantain Lily, Funkia
    Scientific Name: Hosta plantaginea

    These plants are very common and make a perfect addition to a shaded garden. 

    Most dogs do not bother these plants, but if yours is an exception, it is toxic and can cause vomiting, diarrhea and depression. 



    Scientific Name: Hyacinthus orientalis

    This lovely spring flower is not highly toxic to dogs, although ingesting them can lead to oral and esophageal tissue inflammation.

    Depending on the amount a dog consumes, symptoms can include profuse drooling, vomiting and diarrhea. There is no known antidote.  The highest toxicity is concentrated in the bulbs, which dogs obtain by digging in the yard or raiding a bulb awaiting planting.

    When a dog eats a large amount of a bulb, she may experience serious changes in heart rate and respiration, which need the immediate attention of a veterinarian.



    Other Names: Hortensia, Hills of Snow, Seven Bark
    Scientific Name: Hydrangea arborescens

    These beautiful flowers grow on a bush and change color depending on the type of soil they are grown in. 

    While beautiful to look at, your dog should not try to nibble on the plant. 

    They aren’t one of the more toxic plants, but can cause gastrointestinal upset including diarrhea, vomiting, and lethargy. 

    If this plant grows in your garden, just keep an eye on your dog.



    Other Names:  Branching Ivy, Glacier Ivy, Needlepoint Ivy, Sweetheart Ivy, California Ivy

    Scientific Names: Hedera helix 

    Many members of the Ivy family are toxic including California Ivy, Branching Ivy, Glacier Ivy, Needlepoint Ivy, Sweetheart Ivy, English Ivy are plants toxic to dogs. 

    The foliage is more toxic than the berries and can produce vomiting, abdominal pain, excessive salivation and diarrhea

    Jade Plant

    Jade PlantJade Plant

    Other Names: Baby Jade, Dwarf rubber plant, Jade tree, Chinese rubber plant, Japanese rubber plant

    Scientific Name: Crassula argentea

    Jade plants are toxic to dogs and cats.  Other names for this plant include Baby jade, Dwarf Rubber plant, Jade tree, Chinese rubber plant, Japanese rubber plant or Friendship tree.

    Ingesting these plants can cause depression, ataxia (incoordination) and bradycardia  or slow heart rate but this is rare.

    Lily of the Valley

    Lily of the ValleyLily of the Valley

    Scientific Name: Convallaria majalis 

    The small, fragrant lily of the valley is often used as a border plant.Despite its innocent appearance, this plant can have deadly consequences for a dog.

    This plant contains cardiac glycosides which will cause symptoms similar to digitalis ingestion.These are the compounds that cause serious cardiac arrhythmias, vomiting, and diarrhea, a drop in heart rate and possibly seizures and coma.



    Other Names: Rose-Bay

    Scientific Name: Nerium oleander

    Oleander can be seen lining the highway is some southern cities and a very common garden plant in warmer climates. 

    It is toxic to cats, dogs, and even horses. Listed as one of the plants toxic to dogs, it is also considered more dangerous than some. 

    All parts contain a highly toxic cardiac glycoside similar to digitoxin and can cause a number of problems.

    Symptoms include colic, diarrhea, often with blood, sweating, in coordination, shallow/difficult breathing, muscle tremors, and possibly death from cardiac failure.



    Scientific Name: Philodendron spp

    Philodendron is a common, easy-to-grow houseplant that is toxic to dogs and cats.

    It contains a chemical that can irritate the mouth, tongue and lips of animals.

    An affected pet may also experience increased salivation, vomiting and difficulty swallowing.



    Scientific Name: Euphorbia pulcherrima

    Many people cannot face the holidays with fresh poinsettia. 

    This ubiquitous holiday decoration may cause discomfort, but not the alarming panic many of us grew up hearing. 

    Symptoms if ingested can be irritation to the mouth and stomach and occasional vomiting.



    Other Names: Golden Pothos, Devil’s Ivy, Taro Vine, Ivy Arum

    Scientific Name: Epipremnum aureum

    Satin pothos or silk pothos is one of those plants toxic to dogs if ingested and will irritate the mouth, lips and tongue.

    The dog may also show signs of increased salivation, vomiting and/or difficulty swallowing.This is due to irritation and swelling of the oral tissues and other parts of the gastrointestinal tract.

    Sago Palm

    Sago PalmSago Palm

    Other Names:  Coontie Palm, Cardboard Palm, cycads and zamias 

    Scientific Name: Cycas revoluta

    Very popular in warmer climates, they make great landscaping plants.  They also grow indoors in containers.

    Sago Palm – All parts of the plant are poisonous, but the seeds or “nuts” contain the largest amount of toxin.

    The ingestion of just one or two seeds can result in very serious effects, which include vomiting, diarrhea, depression, seizures and liver failure.

    Tomato Plant

    Tomato PlantTomato Plant

    Scientific Name: Lycopersicon spp

    Although tomato plants probably won’t prove lethal for your pet, they can provide a good amount of discomfort.

    The plants, leaves, stems are the problems, not the fruit. Stems and leaves can produce increased salivation, gastric upset, diarrhea, drowsiness, Central Nervous System depression, confusion, weakness, dilated pupils and slow heart rate.

    So don’t panic if your dog enjoys tomatoes as much as you. 

    It is the foliage that is listed as plants toxic to dogs. 

    Tulip or Narcissus

    Tulip or NarcissusTulip or Narcissus

    Scientific Name: Tulipa species

    It’s the bulb of the tulip and narcissus plants that have the highest concentration of toxins.This means: if you have a dog that digs, be cautious.

    Or, if you are forcing bulbs indoors, make sure they are out of reach. Symptoms can include drooling, loss of appetite, depression of the central nervous systems, convulsions and cardiac abnormalities. As a general rule of thumb, keep all bulbs away from your dog.


    Japanese yewJapanese yew

    Other Names: Japanese yew
    Scientific Name: Taxus sp.

    The Yew completes our list of plants toxic to dogs because it contains a compound known as taxine. 

    This causes CNS effects such as  trembling, poor coordination, and difficulty breathing.

    It can also cause significant gastrointestinal irritation and cardiac failure, which can result in death.  This is definitely a plant that dogs should avoid.

    This is only a small list of plants toxic to dogs.  For more information, the ASPCA website offers a much more comprehensive list.

    If you think your dog has eaten something he should not have, call your veterinarian. 

    Two poison control organizations that are helpful and are available to you 24/7 are the Animal Poison Control Center (1-888-426-4435) and the Pet Poison Helpline (1-800-213-6680).

    You might like these

    • Small Dog Safety

      Your small dog safety guide: Articles to help keep your small dog safe in the house and out and about.

    Does This Article Deserve Your Thumbs Up?

    We always appreciate your support and encouragement.  Your thumbs up means so much to us.  Please like this article.

    If you find this page or any page on Small Dog Place Helpful, or Useful in anyway, I’d love it if you would click the small heart found on the bottom right of each page.

    You can also share or bookmark this page — just click on the:

    10 Mistakes People Make When Choosing a Dog Breed

    Free Monthly Newsletter

    Sign Up for Our Free Newsletter and get our Free Gift to You.

    my  E-book, The Top 10 Mistakes People Make When Choosing a Dog (and how to avoid them)

    This article was originally published by Read the original article here.

    Must Read