Information from ASPCA
Please note that the information contained in this plant list is not meant to be all-inclusive, but rather a compilation of
the most frequently encountered plants. If you think that your animal is ill or may have ingested a poisonous
substance, contact your local veterinarian or the 24-hour emergency poison hotline directly at 1-888-426-4435. The
ASPCA web site contains a database which allows you to search for plants that are toxic to dogs, cats or both.
Lilies
Members of the Lilium spp. are considered to be highly toxic to cats. While the poisonous component has not yet
been identified, it is clear that with even ingestions of very small amounts of the plant, severe kidney damage could
result.
Marijuana
Ingestion of Cannabis sativa by companion animals can result in depression of the central nervous system and
incoordination, as well as vomiting, diarrhea, drooling, increased heart rate, and even seizures and coma.
Sago Palm
All parts of Cycas Revoluta 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.
Tulip/Narcissus bulbs
The bulb portions of Tulipa/Narcissus spp. contain toxins that can cause intense gastrointestinal
irritation, drooling, loss of appetite, depression of the central nervous system, convulsions and
cardiac abnormalities.
Azalea/Rhododendron
Members of the Rhododenron spp. contain substances known as grayantoxins, which can
produce vomiting, drooling, diarrhea, weakness and depression of the central nervous system in
animals. Severe azalea poisoning could ultimately lead to coma and death from cardiovascular
collapse.
Cyclamen
Cylamen species contain cyclamine, but the highest concentration of this toxic component is typically located in the
root portion of the plant. If consumed, Cylamen can produce significant gastrointestinal irritation, including intense
vomiting. Fatalities have also been reported in some cases.
Kalanchoe
This plant contains components that can produce gastrointestinal irritation, as well as those that are toxic to the
heart, and can seriously affect cardiac rhythm and rate.
Peace Lily (AKA Mauna Loa Peace Lily)
Spathiphyllum contains calcium oxalate crystals that can cause oral irritation,
excessive drooling, vomiting, difficulty in swallowing and intense burning and
irritation of the mouth, lips and tongue in pets who ingest.
Yew
Taxus spp. contains a toxic component known as taxine, which causes
central nervous system effects such as trembling, incoordination, and
difficulty breathing. It can also cause significant gastrointestinal irritation and
cardiac failure, which can result in death.
Amaryllis
Common garden plants popular around Easter, Amaryllis species contain toxins that can cause vomiting,
depression, diarrhea, abdominal pain, hypersalivation, anorexia and tremors.
Autumn Crocus
Ingestion of Colchicum autumnale by pets can result in oral irritation, bloody vomiting, diarrhea, shock, multi-organ
damage and bone marrow suppression.
Chrysanthemum
These popular blooms are part of the Compositae family, which contain
pyrethrins that may produce gastrointestinal upset, including drooling,
vomiting and diarrhea, if eaten. In certain cases depression and loss of
coordination may also develop if enough of any part of the plant is consumed.
Oleander
All parts of Nerium oleander are considered to be toxic, as they contain
cardiac glycosides that have the potential to cause serious effects —
including gastrointestinal tract irritation, abnormal heart function, hypothermia
and even death.
English Ivy
Also called branching ivy, glacier ivy, needlepoint ivy, sweetheart ivy and California
ivy, Hedera helix contains triterpenoid saponins that, should pets ingest, can result
in vomiting, abdominal pain, hypersalivation and diarrhea.
Pothos
Pothos (both Scindapsus and Epipremnum) belongs to the Araceae family. If
chewed or ingested, this popular household plant can cause significant mechanical
irritation and swelling of the oral tissues and other parts of the gastrointestinal tract.
Schefflera
Schefflera and Brassaia actinophylla contain calcium oxalate crystals that can cause oral irritation, excessive
drooling, vomiting, difficulty in swallowing and intense burning and irritation of the mouth, lips and tongue in pets who
ingest.
Castor Bean
The poisonous principle in Ricinus communis is ricin, a highly toxic protein that can produce severe abdominal pain,
drooling, vomiting, diarrhea, excessive thirst, weakness and loss of appetite. Severe cases of poisoning can result in
dehydration, muscle twitching, tremors, seizures, coma and death
Please note that the information contained in this plant list is not meant to be all-inclusive, but rather a compilation of
the most frequently encountered plants. If you think that your animal is ill or may have ingested a poisonous
substance, contact your local veterinarian or the 24-hour emergency poison hotline directly at 1-888-426-4435. The
ASPCA web site contains a database which allows you to search for plants that are toxic to dogs, cats or both.
Lilies
Members of the Lilium spp. are considered to be highly toxic to cats. While the poisonous component has not yet
been identified, it is clear that with even ingestions of very small amounts of the plant, severe kidney damage could
result.
Marijuana
Ingestion of Cannabis sativa by companion animals can result in depression of the central nervous system and
incoordination, as well as vomiting, diarrhea, drooling, increased heart rate, and even seizures and coma.
Sago Palm
All parts of Cycas Revoluta 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.
Tulip/Narcissus bulbs
The bulb portions of Tulipa/Narcissus spp. contain toxins that can cause intense gastrointestinal
irritation, drooling, loss of appetite, depression of the central nervous system, convulsions and
cardiac abnormalities.
Azalea/Rhododendron
Members of the Rhododenron spp. contain substances known as grayantoxins, which can
produce vomiting, drooling, diarrhea, weakness and depression of the central nervous system in
animals. Severe azalea poisoning could ultimately lead to coma and death from cardiovascular
collapse.
Cyclamen
Cylamen species contain cyclamine, but the highest concentration of this toxic component is typically located in the
root portion of the plant. If consumed, Cylamen can produce significant gastrointestinal irritation, including intense
vomiting. Fatalities have also been reported in some cases.
Kalanchoe
This plant contains components that can produce gastrointestinal irritation, as well as those that are toxic to the
heart, and can seriously affect cardiac rhythm and rate.
Peace Lily (AKA Mauna Loa Peace Lily)
Spathiphyllum contains calcium oxalate crystals that can cause oral irritation,
excessive drooling, vomiting, difficulty in swallowing and intense burning and
irritation of the mouth, lips and tongue in pets who ingest.
Yew
Taxus spp. contains a toxic component known as taxine, which causes
central nervous system effects such as trembling, incoordination, and
difficulty breathing. It can also cause significant gastrointestinal irritation and
cardiac failure, which can result in death.
Amaryllis
Common garden plants popular around Easter, Amaryllis species contain toxins that can cause vomiting,
depression, diarrhea, abdominal pain, hypersalivation, anorexia and tremors.
Autumn Crocus
Ingestion of Colchicum autumnale by pets can result in oral irritation, bloody vomiting, diarrhea, shock, multi-organ
damage and bone marrow suppression.
Chrysanthemum
These popular blooms are part of the Compositae family, which contain
pyrethrins that may produce gastrointestinal upset, including drooling,
vomiting and diarrhea, if eaten. In certain cases depression and loss of
coordination may also develop if enough of any part of the plant is consumed.
Oleander
All parts of Nerium oleander are considered to be toxic, as they contain
cardiac glycosides that have the potential to cause serious effects —
including gastrointestinal tract irritation, abnormal heart function, hypothermia
and even death.
English Ivy
Also called branching ivy, glacier ivy, needlepoint ivy, sweetheart ivy and California
ivy, Hedera helix contains triterpenoid saponins that, should pets ingest, can result
in vomiting, abdominal pain, hypersalivation and diarrhea.
Pothos
Pothos (both Scindapsus and Epipremnum) belongs to the Araceae family. If
chewed or ingested, this popular household plant can cause significant mechanical
irritation and swelling of the oral tissues and other parts of the gastrointestinal tract.
Schefflera
Schefflera and Brassaia actinophylla contain calcium oxalate crystals that can cause oral irritation, excessive
drooling, vomiting, difficulty in swallowing and intense burning and irritation of the mouth, lips and tongue in pets who
ingest.
Castor Bean
The poisonous principle in Ricinus communis is ricin, a highly toxic protein that can produce severe abdominal pain,
drooling, vomiting, diarrhea, excessive thirst, weakness and loss of appetite. Severe cases of poisoning can result in
dehydration, muscle twitching, tremors, seizures, coma and death
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17 Plants that are Poison to Pets
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