10 Most Common Poisonous Plants

Plant Possible Side Effects
Marijuana Depression of the central nervous system and incoordination, diarrhea, vomiting, drooling, increased heart rate, seizures and coma.
Sage Plant Vomiting, diarrhea, depression, seizures and live failure
Lilies Severe kidney damage
Tulip/ Narcissus Bulb Intense gastrointestinal irritation, drooling, loss of appetite, depression of the central nervous system, convulsions and cardiac abnormalities.
Azalea/ Rhododendron Vomiting, drooling, diarrhea, weakness and depression of the central nervous system. Severe poisoning can lead to coma and death from cardiovascular collapse.
Oleander Gastrointestinal tract irritation, abnormal heart function, hypothermia and death
Castor Bean Severe abdominal pain, drooling, vomiting, diarrhea, excessive thirst, weakness and loss of appetite – severe cases can result in dehydration, muscle twitching, tremors, seizures, coma and death
Cyclamen Gastrointestinal irritation, intense vomiting and even death
Kalanchoe Gastrointestinal irritation and arrhythmia
Yew Trembling, incoordination, difficulty breathing, gastrointestinal irritation, and cardiac failure