Poisonous and toxic plants

Major hemlock (Conium maculatum)

Hemlock is a biennial herbaceous plant native to Europe, which can be found up to 1800 meters above sea level.It is known simply as hemlock, which has gone down in history as the drink drunk by Socrates to take his own life. a poisonous plant in all its parts. Contains cicutoxin, an extremely toxic substance located mainly in the rhizome. The poisonings are mainly due to the fact that the plant is confused with celery, parsley or angelica, all edible plants. It is one of the most toxic plants there is and about half of the poisonings are fatal.

Poisonous and toxic plants for dogs

Do you know dangerous plants?

Dogs are not only reliable, loyal, loving and cuddly. They are also curious, playful, cheerful and, especially as puppies, they are great explorers.

These characteristics, although they make us love our 4-legged friends even more, imply that there is also a lot of attention from the owners when they are in unsafe places, such as public parks or city streets.

The puppies can eat everything that comes within range, everything that is not only appetizing but also chewy, funny, curious.

And if there is no doubt about the objects found on the street (they must be left alone and the dog must be educated little by little not to take anything he finds around), as far as plants, flowers and grass are concerned, the question is more delicate.

Playing in the park is one of the most fun sports for owners and animals. But what are the plants that can be harmful to our 4-legged friends?

There are few plants that are really toxic to dogs and they are: l'Oleander, castor and badger.

For the rest, then, intoxication occurs only when a significant amount of poisonous herbs or plants is taken.

Aloe is among the ornamental garden plants it is certainly poisonous for dogs since its leaves, if ingested, cause continuous diarrhea in the dog with the expulsion of a lot of blood.

LAzalea has toxic leaves which, if ingested by the dog, cause anorexia, nausea, vomiting and diarrhea.

Begonia can cause stomach upset, but it is not lethal while Calla is toxic even on contact alone.

Cyclamen is harmful to dogs only if ingested since both the flowers and the tubers contain a sap which causes vomiting, diarrhea and, in severe cases, convulsions in dogs.

Ivy, very common in parks, has poisonous berries which causes nausea and gastroenteritis. If eaten in large quantities it can even lead to a dog's coma and death.

Even with the Ficus there is to be careful, especially for puppies who may play with the leaves and have problems related to nausea and diarrhea. Among other poisonous plants and flowers there are Lily, poisonous for the leaves and the bulb Wisteria, Iris, Lily of the Valley, Oleander, Tulip (poisonous even for children) and Mistletoe.

As for the "dangers from home", beware of garlic and onion that can poison our puppies even in small doses. Even beans and broad beans are not good for dogs as they cause intoxication of the digestive system with symptoms such as jaundice, paleness, spleen and liver problems.

Finally, pay attention to plants that are also dangerous for humans as well as for dogs: let's talk aboutAtropa Belladonna, Bella di Notte, Cicuta and Mandrake.

When we notice that the dog is sick or if we see that he is ingesting a leaf of a plant mentioned above, the first thing to do is to call your trusted veterinarian who will be able to find the most suitable immediate therapy to solve the problem.

In severe cases, the dog will be immediately accompanied to a veterinary clinic.

Here's what to do in case of toxic plant poisoning for dog.

Poisonous plants

What are the most poisonous plants in the world? List of deadly, poisonous, toxic plants that we can find in nature and that we often have in our gardens, balconies and pots.

History is full of poisoning events via plant extracts. We recall the case of Socrates murdered with hemlock.

Let's also see which flowers and plants are harmless to humans but poisonous and toxic to pets.

Poisonous outdoor plants for cats and dogs

Among the plants that we frequently grow to make pergolas or hedges we remember:


Ingesting seeds and chewing the woody pods cause vomiting, pain and abdominal cramps followed by diarrheal discharges. Insights Wisteria


A seemingly harmless plant but very toxic to the dog. It causes hypersalivation, nausea, abdominal pain, vomiting, tachycardia and respiratory failure. Insights Bosso


All parts of this ornamental shrub including the yellow oleander from Peru are very toxic to humans and animals and the most serious intoxications can cause death from cardiac arrest.

Cherry laurel

A very common plant throughout Italy used for hedges and which causes anoxia, convulsions, coma and death. Insights Cherry laurel

Beautiful at night

So beautiful and resistant that it produces black seeds that if ingested they cause nausea, vomiting and abdominal pain and confusion. Insights Bella di Notte


A wisteria-like ornamental plant that produces long yellow inflorescences. The flowers, seeds and roots are particularly poisonous. If ingested, they can cause serious problems with the digestive system. Insights Laburnum


The seeds of this plant are very toxic and if ingested they cause gastroenteritis, fever, colic, severe damage to the urinary tract.

In cases of severe intoxication the symptomatological picture evolves towards the death of the small puppies. More details Ricino


A splendid evergreen that produces bright red berries inside which are enclosed small dark seeds responsible for paralysis of the heart and lungs. The bark and leaves are also poisonous. Insights Rate

Poisonous flowering plants for dogs


The leaves and flowers of this ornamental plant that almost for the whole year gives flowers in profusion by ingestion due to mild gastroenteritis. Better to opt for the hanging begonia to avoid poisoning in your dog. Begonia insights

Marsh Calta

Small rustic plants that generally bloom in spring almost everywhere, even in the lawn among the tufts of grass. Among the most frequent symptoms are itching caused by contact dermatitis. Insights Calta palustre


This splendid plant that regularly, every year, gives splendid spots of color (white, pink, lilac, purple and red) throughout the winter is unfortunately the enemy of cat dogs. Ingesting large doses of the leaves or flowers can cause vomiting and diarrhea, sometimes even convulsions if taken in large doses. Insights Cyclamen

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Video: Why arent all plants poisonous?

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