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Writer's pictureAniston Antony

10 Most Poisonous Plants in India


1. Daffodils


Scientific name: Narcissus

Family: Amaryllidaceae

Kingdom: Plantae

Tribe: Narcisseae

Genus: Narcissus



The bulbs are the most poisonous part of the flower. It is mistaken for leek or onions and cooked and eaten. It may cause nausea, vomiting and Diarrhoea. Flowers can cause intestinal spasms, low BP, salivation and even cardiac problems. In May 2009, a large number of children fell ill in Suffolk, England after a daffodil bulb was added to soup during a cookery class.


2. Dumbcane


Scientific name: Dieffenbachia

Family: Araceae

Kingdom: Plantae

Tribe: Dieffenbachieae

Genus: Dieffenbachia



Eating this plant can irritate the mouth and cause swelling. It can even cause sores, redness, dermatitis, rashes on the skin when the sap gets in contact with the skin. The leaves release a proteolytic enzyme which causes swelling and respiratory distress. Contact of sap with eyes can lead to eye irritation corneal abrasion and maybe permanent eye damage.


3. Easter Lilly


Scientific name: Lilium longiflorum

Family: Lilies

Kingdom: Plantae

Tribe: Lilieae

Genus: Lilium



These are toxic to cat species. When eaten, it can cause dangerous symptoms and can lead to death from kidney problems. Early symptoms include vomiting, diarrhea, distress lethargy which begins only two hours later a cat eats part of this plant. If a cat consumes a part, then the treatment should begin no later than 18 hours after the exposure. Sooner the treatment, they can limit the amount of eaten lily’s absorption in the cat’s body.


4. English Ivy


Scientific name: Hedera helix

Family: Araliaceae

Kingdom: Plantae

Tribe: Honeysuckle

Genus: Hedera



Also called branching ivy, needlepoint ivy. If ingested, may cause vomiting, abdominal pain, excessive drooling, Diarrhoea. It is toxic to dogs and cats. Contact with these plants may cause allergic conditions. Usually, symptoms are only severe if large amounts of the plant are eaten or in contact.


5. Oleander


Scientific name: Nerium oleander

Family: Apocynaceae

Kingdom: Plantae

Tribe: Nerieae

Genus: Nerium



This tall shrub has long leathery leaves that grow in groups. Bright clusters of flowers bloom at the ends of branches. Every part of these plants including seeds is poisonous. Eating small parts can cause fatal, vomiting, diarrhea and in severe cases coma and death.


6. Peace Lilly


Scientific name: Spathiphyllum

Family: Araceae

Kingdom: Plantae

Tribe: Spathiphylleae

Genus: Spathiphyllum



Leaves are toxic. If large quantities of leaves are eaten causes vomiting, diarrhea, stomach ache, swelling in the mouth and throat. The sap and juice of the plant can interfere with your blood calcium level making your blood toxic. The effect of this in adults is mild but can cause serious health problems to kids or pets. Cats are more sensitive to peace lily, if left untreated for more than 72 hours, they could potentially die from renal failure.


7. Philo dentron


Scientific name: Philodendron

Family: Araceae

Kingdom: Plantae

Tribe: Philodendreae

Genus: Philodendron



If leaves are eaten it causes burning and swelling of lips, tongue and throat. It contains calcium oxalate crystals, which are toxic and harmful to humans and animals. The effect of this is mild in adults, but rare fatalities have been observed in children. This is more toxic to cats and can cause spasms, seizures, pain, swelling in animals.


8. Pothos


Scientific name:

Family: Araceae

Kingdom: Plantae

Tribe: Monstereae

Genus: Epipremnum



The plant can cause irritation and vomiting if ingested because it contains calcium oxalate crystals. Even the sap contains chemicals that cause irritation and inflammation to your skin. In rare cases, it may cause swelling of your upper airways, causing difficulty in breathing.


9. Sago Palm


Scientific name: Cycas revoluta

Family: Cycadaceae

Kingdom: Plantae

Tribe: Conifers

Genus: Cycas



Although the plant looks small and cute, ideal for indoor and tables, the leaves and seeds of this plant are poisonous. The plant is extremely dangerous for dogs. Symptoms of ingestion will develop with 12 hours which include vomiting, diarrhea, weakness, seizure, liver failure, cirrhosis or ascites. The fatality rate of 50% to 75% of the sago palm is observed by the animal poison control center. The seeds contain the highest level of toxic cycasin causing gastrointestinal irritation, extreme cases leading to liver failure.


10. Foxgloves


Scientific name: Digitalis

Family: Plantaginaceae

Kingdom: Plantae

Tribe: Digitalideae

Genus: Digitalis



The plant contains toxic cardiac glycosides. Ingestion of any parts (often leaves) can result in severe poisoning. Symptoms include nausea, headache, skin irritation and diarrhea. In severe cases, it can lead to heart and kidney problems. Although dangerous, it is also used to make medicine to make heart stimulant drugs. Hallucination and loss of appetite are seen in people who have been poisoned over a long period of time.


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