34 Poisonous Houseplants for Dogs & Cats | Plants Toxic to Dogs & Cats
There are poisonous houseplants for dogs and cats. Some are mildly poisonous and some are fatal. It is better to know about them if you own a pet and here we’ve listed 34 plants toxic to dogs & Cats.
The purpose of this post is not to discourage you from growing houseplants but to make you aware of some of the popular and common house plants toxic to your pets. Dogs & Cats are curious animals. Extremely argus-eyed in its quest and if your dog or cat has a tendency to look for something to nibble on then this list of poisonous plants for dogs and cats will help you.
Poisonous Houseplants for Dogs & Cats
1. Sago Palm
This exquisite plant sago palm is one of the favorites of landscapers. The bad news is if your dog has a tendency to bite or chew anything then this plant is dangerous. It contains a toxin called cycasin, which is known to cause liver damage. *Sago palm is also poisonous for cattle.
Toxins: Cycasin
Severity: Very high
Malicious Parts of the Plant: The whole plant
Symptoms: Vomiting, jaundice, increased thirst, hemorrhagic gastroenteritis, bruising, clotting disorder, liver damage, liver failure and death.
2. Alocasia
A genus of plants of the family Araceae, it consist of 79 species, originated from the area of the Eastern Himalayas, the tropical and subtropical regions of Asia, to tropical regions of the western Pacific and eastern Australia. Some species are endemic. They are also grown as a houseplant.
Toxins: Insoluble calcium oxalate
Severity: Moderate
Malicious Parts of the Plant: Leaves, Stems, and Roots
Symptoms: Mucous membrane irritation, intense burning and irritation of the mouth, lips, and tongue, excessive drooling, vomiting, difficulty in swallowing.
3. Aloe
A kind of leaf succulents, many varieties have various medicinal uses. But aloes are the plants toxic to dogs but only when they ingest it. There are around 500 species, comes in various forms– woody shrubs and sometimes vines. The geographical range of the plants of this type includes the Arabian Peninsula, Africa, South Asia and Madagascar.
Toxins: Saponins
Severity: Moderate
Malicious Parts of the Plant: Pulp and Juice
Symptoms: Vomiting, depression, diarrhea, lack of appetite, chills, change in the color of urine.
4. Arrowhead Plant
Most common species is Syngonium podophyllum. It comes from the tropical areas of Central America and the Northern areas of South America. It is cultivated as an ornamental plant. The plant contains calcium oxalate in its sap, which is harmful if contacted or ingested.
Toxins: Insoluble calcium oxalates
Severity: Moderate
Harmful parts of the plant: All parts of the plant
Symptoms: Vomiting, depression, diarrhea, lack of appetite, chills, change in the color of urine.
5. Calla Lily
Calla lilies are beautiful but at the same time, they are one of poisonous plants for dogs and cats. When the plant is chewed clinical signs are visible immediately.
Toxins: Insoluble calcium oxalates and unidentified, toxic alkaloids
Severity: Mild to Moderate
Harmful Parts of the Plant: All parts of the plant
Symptoms: Oral pain, diarrhea, drooling, lack of appetite, pawing at the mouth.
6. Strelitzia (Bird of Paradise)
Strelitzia, which is also called “bird of paradise” is an extraordinary ornamental plant native to South Africa.
It is also grown as an indoor plant and for cut flowers but it comes in our list of poisonous houseplants for dogs as it contains Hydrogen Cyanide (prussic acid).
Did you know?
Hydrogen cyanide was used by Iraq in the war against Iran. During the Second World War, a form of hydrogen cyanide (Zyklon B) was used in the Nazi gas chambers.
Toxins: Hydrogen Cyanide (Prussic Acid)
Severity: High
Malicious parts of plants: All Parts
Symptoms: Mild nausea, vomiting, drowsiness, difficulty in breathing, less appetite, death.
7. ZZ Plant
ZZ plant belongs to Araceae family, it contains calcium oxalate crystals. However, plants that contain calcium oxalates don’t possess many serious threats.
Toxins: Insoluble calcium oxalates
Severity: Mild
Harmful parts of the plant: All parts of the plant
Symptoms: Mucous membrane irritation, intense burning, and irritation of the mouth and lips, tongue, excessive drooling, vomiting, difficulty in swallowing.
8. Dieffenbachia
Often called dumb cane, it is one of the easiest houseplants you can grow at your home but be careful if you own a dog or cat that is playful. Chewing or biting into this plant can cause injury.
Toxins: Insoluble calcium oxalates, proteolytic enzyme
Severity: Moderate
Malicious Parts of the Plant: The whole plant
Symptoms: Mucous membrane irritation, intense burning, and irritation of the mouth and lips, tongue, excessive drooling, vomiting, difficulty in swallowing.
9. Jade Plant
Crassula ovata is such a low care houseplant that even a non grower can grow it happily. This tropical tree from Africa comes in our list of poisonous houseplants for dogs. However, it is mildly toxic.
Toxins: Unknown
Severity: Low
Harmful Parts of the Plant: All parts of the plant
Symptoms: Nausea, retching.
10. Kafir Lily
Kafir lily is an exquisite plant with succulent leaves and orange flowers. It is not a true lily and can be grown as a houseplant. Its ingestion can cause kidney failure in cats, it is also one of the toxic plants to dogs.
Toxins: Licorine and other alkaloids
Severity: High
Malicious parts of the plant: The whole plant is poisonous, but especially the base of the leaf, stem, and bulbs
Symptoms: Vomiting and diarrhea. Large intake causes convulsions, low blood pressure, tremors and cardiac arrhythmia.
11. Dracaena fragrans
Its common name is cornstalk plant. Dracaena fragrans is modeately toxic to pets.
Toxins: Saponins
Severity: Moderate
Malicious Parts of the Plant: The whole plant
Symptoms: Vomiting (sometimes with blood), depression, lack of appetite, drooling.
12. Cyclamen
Cyclamen is a beautiful flowering annual houseplant that is grown for ornamental purposes. However, cyclamen contains saponins and if its roots are ingested it causes some clinical symptoms, which require veterinary attention.
Toxins: Saponins
Severity: Low to Moderate
Malicious Parts of the Plant: Rhizome, tubers
Symptoms: Salivation, vomiting, diarrhea. At high intake cardiac, arrhythmia and convulsions are also possible.
13. Desert Rose (Adenium)
A beautiful succulent that belongs to the family of oleander originated from eastern Africa. It is commonly cultivated as an ornamental plant and can be grown in pots. But adenium is one of the plants poisonous for dogs.
Toxins: Digoxin – an organic compound with a group of glycosides
Severity: High
Malicious Parts of the Plant: All parts of the plant are poisonous, including sap
Symptoms: Vomiting, diarrhea, anorexia, depression, irregular heartbeat, and death (If ingested in higher amount).
14. Golden Pothos
An excellent climbing plant that can be grown without sun, golden pothos (Epipremnum pinnatum) contains insoluble calcium oxalates that can cause mild clinical symptoms if chewed by your dog.
Toxins: Insoluble calcium oxalates
Severity: Mild
Harmful parts of the plant: All parts of the plant
Symptoms: Mucous membrane irritation, intense burning, and irritation of the mouth, lips and tongue, excessive drooling, difficulty in swallowing.
15. Kalanchoe
A genus of plants of the Crassulaceae family. Kalanchoe is a beautiful common houseplant with flowers. This plant contains naturally occurring poison that affects the heart.
Toxins: Bufodienolides
Severity: Moderate to High
Harmful parts of the plant: All parts of the plant
Symptoms: Vomiting, diarrhea, abnormal heart rhythm (rare).
16. Dracaena
Dracaena is a genus that consist 40 species of woody and shrubby plants. They are found in subtropical and tropical regions of Asia, Africa, and the Canary Islands and commonly grown as the houseplant.
Toxins: Saponins
Severity: Mild to Moderate
Harmful parts of the plant: All parts of the plant
Symptoms: Vomiting (sometimes with blood), depression, lack of appetite, drooling.
17. Eucalyptus
If you are growing eucalyptus as a houseplant and you have a dog then be aware eucalyptus oil can trigger lethargy and depression. Even the smell eucalyptus oil can trigger the bad mood of your dog.
Toxins: Eucalyptus oil
Severity: Moderate
The harmful part of the plant: Any part of the plant
Symptoms: Salivation, vomiting, diarrhea, depression, weakness.
18. Flame Lily (Gloriosa superba)
A beautiful ornamental plant, its flowers look like a flame. It can also be grown as a houseplant and particularly used as a medicinal plant and have a variety of uses in Ayurveda. Apart from all these facts, it is useful to know that like most of the lilies, flame lily comes in the list of toxic plants to dogs. All parts are poisonous but mostly the tubers (swollen, underground stems). The ingestion of flame lily has caused many accidental deaths. It has also been used to commit murder, suicide, to induce abortions and to poison dogs. *Most of the lilies are poisonous.
Toxins: Colchicine related alkaloids
Severity: Very High
Malicious Parts of the Plant: The whole plant. Due to the presence of colchicine whole plant is deadly poisonous. Particularly high content of colchicine recorded in seeds and tubers of plants. Superbine is present mainly in flowers.
Symptoms: Salivation, vomiting (bloody), diarrhea (bloody), shock, kidney failure, liver damage, bone marrow suppression, paralysis, death.
19. Ficus Benjamina
Also called weeping fig, it occurs naturally from Southern Asia to Northern Australia and the Solomon Islands. It is the official tree of Bangkok, Thailand.
Toxins: Proteolytic enzyme (ficin), psoralen (ficusin)
Severity: Low
Harmful Parts of the Plant: All parts of the plant
Symptoms: Contact with skin can cause inflammation of the skin, ingestion may cause irritation of the mouth, salivation, and vomiting. Similar symptoms occur when pets come in contact with Rubber tree plant (ficus elastica).
20. Flamingo Flower (Anthurium scherzeranum)
Flamingo flower contains calcium oxalates and can cause irritation in mouth and other mild clinical symptoms if ingested.
Toxins: Insoluble calcium oxalates
Severity: Mild
Harmful Parts of the Plant: All parts of the plant
Symptoms: Mucous membrane irritation, intense burning, and irritation of the mouth, lips and tongue, excessive drooling, difficulty in swallowing.
21. Gardenia
Gardenia is one of the most fragrant flowers in the world. However, if you are growing gardenia as an houseplant you must know that it is mildly poisonous. All parts of the can cause nausea and vomiting like symptoms to your pet, after ingestion.
Toxins: Geniposide, gardenoside
Severity: Low
Harmful Parts of the Plant: All parts of the plant
Symptoms: Mild vomiting, diarrhea
22. Geranium
Usually, pets don’t touch this plant but geranium can cause mild clinical symptoms to your dog or cat.
Toxins: Geraniol, linalool
Severity: Low
Harmful Parts of the Plant: All parts of the plant
Symptoms: Vomiting, anorexia, depression, dermatitis.
23. English ivy (Hedera helix)
Beautiful English ivy is one of the best plants you can grow in shade, even indoors. But the plant must not be ingested as it contains a toxin called saponins and it comes in our list of poisonous houseplants for dogs.
Toxins: Triterpenoid saponins (hederagenin)
Severity: Moderate
Harmful Parts of the Plant: All parts of the plant
Symptoms: Drooling, Vomiting, Diarrhea, Abdominal pain.
24. Peace Lily (Spathiphyllum)
The peace lily is worthy of growing in homes, it can be grown without direct sunlight and requires low care and maintenance. But peace lily contains calcium oxalates if it is chewed by your dog or cat mild clinical symptoms may occur.
Toxins: Insoluble calcium oxalates
Severity: Mild
Malicious Parts of the Plant: The whole plant
Symptoms: Mucous membrane irritation, intense burning, and irritation of the mouth, lips and tongue, excessive drooling, vomiting, difficulty in swallowing.
25. Schefflera
Another plant that belongs to Araceae family (Dieffenbachia, Calla lily, Arrowhead, Dumbcane, Peace Lily, Philodendron, Pothos, Umbrella Plant, Elephant’s Ear, Chinese Evergreen, and Schefflera), plants from this family contains calcium oxalate crystals that cause injury if chewed.
Toxins: Calcium oxalate crystals
Severity: Mild to Moderate
Harmful parts of the plant: All parts of the plant
Symptoms: Mucous membrane irritation, intense burning, and irritation of the mouth, lips and tongue, excessive drooling, vomiting, difficulty in swallowing.
26. Oleander
Oleander needs no introduction, it is a poisonous plant and we even listed it in 13 most common plants that are poisonous. Oleander is grown as a houseplant too.
Toxins: Cardiac glycosides
Severity: Very high
Malicious Parts of the Plant: The whole plant
Symptoms: All parts of the plant contains toxic cardiac glycosides as digoxin. Its ingestion can cause colic, diarrhea (possibly bloody), sweating, difficulty with coordination, shortness of breath, difficulty in breathing, muscle tremors, and can even cause death due to heart failure.
27. Amaryllis (Amaryllis sp.)
Amaryllis belongs to the lily family but it is mildly poisonous when compares to other lilies like Easter lily, day lily, Asiatic lily, tiger lily, lily of the valley and flame lily.
Toxins: Lycorine and other glycosides
Severity: Mild to Moderate
Malicious parts of the plant: Bulbs
Symptoms: Vomiting, depression, drop in blood pressure, abdominal pain, drooling, loss of appetite, seizures.
28. Asparagus Fern (Asparagus setaceus)
Asparagus fern is not a fern though its leaves resemble one. Also called lace fern, it is a common houseplant.
Toxins: Sapogenins
Severity: Mild
Malicious Parts of the Plant: Foliage, berries
Symptoms: The consumption of its berries can cause gastrointestinal upset, vomiting, abdominal pain, and diarrhea.
29. Ti plant (Cordyline terminalis)
This tropical houseplant is extremely low maintenance though it is moderately toxic to dogs.
Toxins: Saponins
Severity: Low
Malicious parts of the plant: The whole plant
Symptoms: Vomiting (sometimes with blood), depression, lack of appetite, drooling.
30. Begonia
Begonia is one of the plants you can grow indoors. But begonia is toxic, it contains insoluble oxalates.
Toxins: Insoluble oxalates
Severity: Mild
Harmful Parts of the Plant: A whole plant
Symptoms: Mucous membrane irritation, intense burning, and irritation of the mouth, lips and tongue, excessive drooling, vomiting, difficulty in swallowing.
31. Peyote (Lophophora williamsii)
A plant in the cactus family. Popularly known as peyote. It comes from the regions of New Mexico and Texas. It is a useful medicinal and ornamental plant for us but comes in the category of poisonous houseplants for dogs.
Toxins: Mescaline and other alkaloids
Severity: Moderate
Malicious Parts of the Plant: The whole plant
Symptoms: Psychotropic, intoxication, vomiting, diarrhea.
32. Brunfelsia
Brunfelsia whose popular names are Yesterday, Today, Tomorrow, Kiss-Me-Quick, Lady-of-the-Night contains a stimulant toxin called brunfelsamidine and other toxic agent called hopeanine, which is a depressant.
Toxins: Brunfelsamidine, hopeanina
Severity: High
Harmful Parts of the Plant: All parts of the plant
Symptoms: Irritation of the mouth and stomach (salivation, vomiting, and diarrhea), muscle cramps, muscle rigidity, paralysis of the nervous system, coma.
33. Cactus
Cactus species are mainly grown as the ornamental houseplants. Most of the plants of this family are toxic and create a potential danger to house pets due to their thorns and spikes.
Toxins: Many species have different toxic substances. Spikes are the threat too.
Severity: Moderate to High
Malicious parts of the plant: The whole plant, in particular, spikes
Symptoms: Inflammation of the skin, injury
34. Philodendron
When it comes to easiest houseplant philodendrons come to mind. Philodendrons are mildly toxic, they contain calcium oxalate crystals, which trigger clinical problems after ingestion.
Toxins: Insoluble calcium oxalates
Severity: Mild to Moderate
Harmful Parts of the Plant: All parts of the plant
Symptoms: Mucous membrane irritation, intense burning, and irritation of the mouth and lips, tongue, excessive drooling, vomiting, difficulty in swallowing.
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