Poisonous indoor plants

Poisonous indoor plants

From time to time, exotic lovers have a desire to replenish their extensive collection of indoor plants with new interesting specimens. However, you should be careful in choosing future green pets, because among them there are poisonous species that can be very dangerous for all family members, including animals. Such properties have not only exotic representatives of indoor plants, but also ordinary green beauties, for example, various types of azaleas. Many do not even suspect that there are quite an impressive number of poisonous plants in the general nomenclature of all species.

The most common poisonous indoor plants

Adenium obese or Desert Rose - a common poisonous plant that can cause poisoning of the whole body when in contact with it. Penetrating into the skin cells, it leads to intoxication in a short time.

Azalea or Rhododendron - this beautiful flower can be easily poisoned if drops of its nectar or leaf juice accidentally get inside the digestive system or on the surface of the nasal mucosa. Vomiting and lacrimation are considered signs of poisoning.

Brovalia is beautiful - an attractive houseplant, the vegetative parts of which are very poisonous and dangerous to humans. When used, as a rule, nausea, drowsiness occurs.

Hydrangea - is an equally dangerous type of home plant. Its maintenance requires careful care, since hydrangea flowers, when ingested, can cause stomach cramps, profuse sweating, weakness and nausea, and slow circulation.

Clivia Is a beautiful plant with bright large flowers that can also cause serious harm with its leaves and roots. Their toxic components have strong properties that cause diarrhea, vomiting, and in severe forms - paralysis.

Lily - a flower that has a specific bright aroma during flowering and can provoke severe headaches and allergic reactions, and ingestion of leaves often even leads to death.

Monstera - can often be found in offices and large rooms. Monstera leaves are poisonous. On the areas of the skin where drops of juice have gotten, burns and redness appear.

Spurge - another representative of poisonous plants that have the property of causing harm to the skin, and if it gets into the eyes, cases of loss of vision are known.

Oleander - has luxurious pink flowers that seem harmless only at first glance. Use can lead to the appearance of hallucinations, indigestion, and the most severe forms of poisoning are fatal.

Nightshade - refers to poisonous plants because of its berries. After poisoning with these orange fruits, a person is tormented by vomiting, shortness of breath appears, the pupils dilate.

Ficus Is a common houseplant. In families with children, you should be very careful when keeping this pet. Any green parts of the ficus can cause allergies and severe burns.

All of the above names can be seen in many plant lovers at home on windowsills. With proper handling and care, all hazards can be minimized. You don't have to rush to get rid of these green beauties right away. You just need to adhere to certain rules. If there are small children or animals in the apartment who periodically try to try everything, you need to make sure that the pots with such flowers are in places inaccessible to them. It is necessary to carry out pruning or replanting plants only with gloves, and also wash your hands regularly after any contact with leaves or flowers. These simple steps will help you avoid unpleasant and dangerous cases of poisoning.

The homeland of many indoor flowers is the tropics, in which representatives of the flora need to protect themselves from annoying insects and animals that want to feast on their juicy leaves. That is why it happened historically that plants began to produce poison. This feature was carried over from the tropics with them, hence most of the poisonous indoor flowers appeared.

Poisonous house plants

Poisonous home flowers with large leaves

Plants with large leaves often come from tropical forests. They are loved by flower growers, especially those who grow exotic varieties. But before you start farming such a flower, you should study its properties, otherwise you can cause serious harm to your health.


Monstera is incredibly loved by flower growers. It is grown in most apartments. Its juice, getting inside the body, causes burns and profuse salivation, then the intestines become inflamed, the victim is vomiting, and stomach bleeding may open.


Ficus is a plant most often found in urban apartments. This is not the most harmful indoor plant, it is difficult for them to poison. However, ficus can cause allergies when the juice comes into contact with the skin.


Schefflera is a flower contraindicated for allergy sufferers. And its juice, when it gets on the skin, can cause skin dermatitis.


Dieffenbachia is a poisonous indoor palm. This is one of the most popular plants grown by gardeners at home. It has positive qualities: it fits perfectly into any interior, it cleans the air well. But it also has a negative effect on the human body in case of ingestion. The juice it secretes can cause:

  • pain and burning sensation in the mouth
  • throat swelling
  • indigestion
  • convulsions
  • muscle paralysis.

Also, do not touch it with your hands, in order to avoid dermatitis, and avoid contact with mucous membranes.

Cacti harmful and dangerous to humans

Most cactus species are not poisonous. The only harm they can do is pricking the hand with needles, but there is nothing terrible or dangerous about that. But there is a special species that is one of the most dangerous plants.


The trichocereus cactus contains drugs that have a paralytic effect. Therefore, an injection of this plant threatens with temporary paralysis of the nervous system.

Poisonous palms

Many indoor palms are exotic plants that came from the tropics. You should be careful with these colors.

Pachypodium Lamera

Lamer's pachypodium is not a palm tree, it just looks like it. The pachypodium is a separate genus. The stem of the flower is prickly, so most often neither children nor animals are suitable for it. But if you eat a leaf of a plant, severe poisoning will begin with damage to the nervous system.

It's important to know! All parts of the plant are poisonous and, if ingested, can cause convulsions, paralysis, and respiratory arrest. Death is possible.

Features of the

Many houseplants come from tropical rainforests, where they survived as best they could in their cramped habitats. Protecting themselves from being eaten and ruined, some representatives of the flora acquired toxic properties. The process lasted for thousands of years, and they remain in the status of domestic plants for only a few centuries. We will have to accept and accept beautiful indoor flowers along with their features.

And so that trouble does not happen, you just need to know which of them are poisonous, protect children and animals from them, observe safety precautions yourself when breeding crops.

If everything is done correctly, you can grow poisonous beauty on the windowsill all your life, without harm to your own health.

But sometimes the question arises why, among millions of flowers, people choose their poisonous representatives. It turns out that toxic plants have a number of features that flower growers cannot resist:

  1. These species were formed in unusual tropical conditions for us, and many of them seem to us exotic, not like the surrounding flora.
  2. We wouldn't keep them on the windowsills if they weren't so great. Even those that hardly bloom have incredibly beautiful leaves.
  3. Another feature is that poisonous flowers disguise themselves as "decent" and do not report their toxicity. The florist himself should ask what kind of "miracle" he brought into the house.

Given the special beauty and unusualness of poisonous ornamental plants, you should not give them up at all. If children and animals do not have access to flowers and allergy sufferers and asthmatics do not live in the house, the presence of such plants will not cause much harm.

Toxic plants, the poison of which is not fatal, but in large doses causes serious diseases.

The fruits of the plant family araliev, for example, Aucuba japonica, Poliscias, Fatsia, Fatshedera, Schefflera are poisonous and cause digestive upset and allergic reactions. In ivy, which also belongs to the Araliaceae family, all plant organs are poisonous.

IN begonias contains insoluble salts of oxalic acid, which cause burns and irritation of the oral cavity, difficulty in swallowing, and vomiting. Begonia tubers are the most toxic.

Poisonous substances are found in bulbs gloriosa... In large doses, they lead to blood clotting disorders and kidney disease. Poisoning symptoms: nausea, vomiting, diarrhea.

Unripe berries lanthanum contain triterpenoids that are toxic to humans, cats and dogs. Poisoning symptoms - vomiting, diarrhea, shortness of breath, weakness. In some cases, the liver fails.

All plants of the family euphorbia: akalifa, croton, euphorbia, euphorbia (poinsettia), jatropha contain the toxic substance euphorbin, which causes severe burns to the skin and mucous membranes. When working with euphorbia, it is necessary to take special care of the eyes, since the milky juice irritates the cornea and can lead to temporary or complete loss of vision. Once in the mouth, the milky juice burns the mouth and throat very badly, and causes disorders of the digestive and nervous systems.

Family members nightshade: nightshade (solanum or Jerusalem cherry), brovallia, brunfelsia, ornamental pepper are quite poisonous. The beautiful fruits of pepper and nightshade are a great danger for children who will definitely want to try them. Brunfelsia contains the poisonous substance brunfelsamidine, which causes indigestion, profuse salivation, tremors, lethargy, coughing, and seizures.

On contact with milky juice ficuses with the skin of some people, inflammation begins, eczema, dermatitis occur. Ficus juice released into the air can cause allergies and bronchial asthma.


Another plant whose beauty is very deceiving is amaryllis. But it's good that the main danger in this case comes from the bulb. The consequences of close contact with it are the occurrence of vomiting when the juice gets inside. If suddenly the sheet breaks and a white liquid appears on it, you should immediately wash your hands thoroughly and do not touch your eyes.

Poisonous plants:

Poisonous plants are not necessarily guests from exotic countries, many of them grow in central Russia, they are inconspicuous and are rarely paid attention to. Leaves hemlock spotted (Conium maculatum) are very similar to parsley, it has red spots on the stem, it grows in wastelands and is considered a weed. And here cicuta (poisonous milestone) lives in wetlands, along the shores of lakes and rivers, often in water. The hemlock has dissected leaves with narrow lanceolate lobes and umbrellas of whitish small flowers.

Poisonous Vech (Cicuta virosa). © Andrea Moro

Vech poisonous (Cicuta virosa) or cicuta is one of the most dangerous plants, all parts of which, especially the rhizome, contain cicutotoxin and other potent alkaloids. The poisonous alkaloid in hemlock is horse meat, which has the same effect as the poison of curare. Signs of poisoning with these plants are convulsions, unconsciousness, paralysis, ending with respiratory arrest.

Home use can also end in tragedy. yew berry (Taxus baccata) as a medicinal plant. Young yew needles containing the alkaloid taxane can be poisoned even by animals. This alkaloid attacks the central nervous system.

Since the 1990s, yew tree alkaloids have been used for the manufacture of anticancer agents in mainstream medicine.

Castor oil plant (Ricinus) are often grown as an ornamental annual. Its large seeds resemble a tick in shape. They are not only a source of castor oil, but also contain a toxic protein enzyme - ricin, which causes paralysis of the nervous system.

Castor oil plant (Ricinus communis). © F. D. Richards

The smell and appearance of poisonous plants sometimes suggests, and sometimes hides the danger that threatens us upon contact with them. Pink periwinkle and purple crocus can kill a person. In bulbs autumn crocus (Colchicum autumnale) accumulates colchicine, which has the same effect as arsenic. Pink periwinkle, or Catharanthus pink (Catharanthus roseus), or Pink periwinkle is also poisonous, but its potent alkaloids are used in modern medicine as an antineoplastic agent.

Pink catharanthus, or pink periwinkle (Catharanthus roseus). © Carl Lewis

IN wolf berries (Daphne mezereum), which redden alluringly on the stem of the plant, contain the glycoside daphnin and the poisonous resin meserin, which at the initial stage causes an intolerable burning sensation in the throat, strong bitterness in the mouth, dizziness and swelling of the tongue. When you admire the purple wolfberry flowers in spring, do not pick or gnaw the twig with your teeth, it is very dangerous.

Bright orange berries lily of the valley (Convallaria) are also dangerous. Glycosides lily of the valley, foxgloves, bought affect the rhythm of the heartbeat, the nervous system and the stomach. Even the water in the vase where these flowers stand is dangerous.

At the end of summer in the coniferous forest you can find raven eye (Paris) - a black-blue berry between large leaves. Make sure that when walking in the forest, your children do not mistake the raven eye for blueberries or blueberries.

Be wary of plants with bright and juicy fruits if you don't know exactly what kind of plants they are!

Contains the alkaloids hyoscyamine, scopolamine and atropine henbane juice, which causes hallucinations, delirium, heart palpitations and mental confusion. An insignificant amount of these substances was used in ancient times for anesthesia during surgical operations.

Black henbane (Hyoscyamus niger), like potatoes, belongs to the nightshade family. It grows on the outskirts of fields and wastelands. The height of this poisonous plant is about 1 meter, burgundy venation appears on yellowish flowers. After flowering, pitcher-shaped white capsules with round-shaped seeds appear on the henbane. People who chew these seeds to soothe a toothache feel dry mouth, their speech is impaired and their pupils dilated, mental agitation can turn into insanity. The same symptoms appear from red berries. black nightshade and bittersweet nightshade.

Black henbane (Hyoscyamus niger). © Rolf Muller

It grows in dumps and wastelands dope smelly, it is better not to breathe its smell, and even touching its flowers is very dangerous. The fruits of "stupor - herbs" contain the alkaloid daturine, which also contains henbane.

Other plants from the nightshade family are also dangerous: belladonna, magic mandrake, tobacco from South America and Peruvian coca.

Datura ordinary, or stinking Datura (Datura stramonium). © NYSIPM

Dangerous to humans and hogweed, from its poisonous stems you can not tinker with any pipe or sprinkler. The leaves of the hogweed produce essential oils that burn in the sun. The same effect on human skin and ash-tree Caucasian and ash-tree narrow-leaved.

Many buttercups are also poisonous, producing dangerous glycosides and essential oils that irritate the nose, throat, and eyes. Buttercup juice leads to sharp pains in the stomach. There are many poisonous herbs among buttercups: Adonis, hellebore, catchment, lumbago, spiked raven and other plants.

Blackening lumbago (Pulsatilla nigricans). © Adam Gor

But poisonous plants can do more than just harm, many of them are useful. In folk medicine in Russia, about 160 species of poisonous plants were used.

Opium poppy, or Sleeping poppy (Papaver somniferum). © tanja niggendijker

It's hard to imagine that a delicious Indian cashew the peel contains poisonous cardol, which can cause abscesses on human skin. In India, this substance is used to protect building materials from ants.

Tropical fruit mango useful and pleasant to the taste, but the smell of its flowers can cause allergies in a person. The unripe peel, twigs and trunk of the mango tree contain a poisonous gum that leaves blisters and swelling on the skin.

You can get poisoned and poppy seeds sleeping pills... Unripe capsules and poppy ovary are poisoned with poisonous milky juice.

Celandine also contains milky juice, which can burn the skin. Big trouble will bring celandine juice when it enters the stomach. Currently, celandine alkaloids are being studied for use in medicine, as inhibiting the growth of malignant tumors.

Greater celandine (Chelidonium majus). © fifeflora

It should be understood that most poisonous plants do not pose a serious danger in case of accidental contact with them. Much depends on the dose of their use. As a rule, poisonous plants can be poisoned if you use them for self-treatment, without consulting a doctor, based on the advice of "knowledgeable people."

What amazing powers
I put the earth in stones and flowers!
There is no such fiber in the world
That she would not be proud of
How can you not find such a basis,
Where there would be nothing wrong.
Anything by the way is useful, not on time -
All good things turn into vice.
For example, the vessels of this flower:
One is good in them, the other is bad.
There is a healing scent in its flowers,
And in the leaves and roots - the strongest poison.
So they split our soul in two
The spirit of kindness and evil willfulness.
However, in those where evil triumphs,
The black hollow gapes of death

Romeo and Juliet by William Shakespeare.
Translated by Boris Pasternak.

Poisonous indoor plants

If half a century ago, the assortment of indoor plants was mainly limited to aloe and geraniums, and the rest of the delights were the lot of collectors, now the whole globe is represented on our windowsills. But often we do not think that some of the plants pose a certain danger and require careful handling. Of course, no one in their right mind will eat pets from the windowsill, but there are still children who cannot always be seen, pets and herbal medicine lovers who, having read something and somewhere, immediately rush to try it on themselves.

First of all, you should pay attention to the plants of the aroid family. Almost all of its representatives are poisonous to one degree or another. Let's start with Dieffenbachia, beloved in recent years, in which, by the way, all parts of the plant are poisonous and in particular the stem, which we cut off during grafting or pruning. In reference books on poisonous plants, it refers to very poisonous plants. It contains cyanogenic glycosides, saponins and calcium oxalate crystals, scientifically called raffida. Symptoms of poisoning with this plant are nausea, vomiting, diarrhea, there is a feeling of a swollen tongue, heart rhythm disturbances are observed. If the juice comes into contact with the skin, irritation occurs. It is better to carry out all operations with this plant in ordinary household gloves, and be sure to wash the tool, because there is no guarantee that after the flower lover has cut off the stalk of plants with a knife, someone from the other household will not cut off a sandwich with this knife.

Aglaonemes are now popular, which belong to the same aroid family as dieffenbachia. This plant contains the poisonous alkaloid aroin. When in contact with the sap of the plant, burning, irritation occurs, and when ingested, nausea, vomiting, convulsions and irregular heart rhythms occur. The same is true for caladiums.

Scindapsus causes contact dermatitis when working with it.

The next family that is dangerous is the euphorbia. The most, perhaps, common representative of this family is now the fairest euphorbia, or poinsettia. Poisoning with this plant has been noted in children who tried to taste the bright leaves "on the tooth". The result was nausea and diarrhea, drowsiness and chills.

Catharanthus pink is gaining popularity as a houseplant, which can bloom not only pink, but also white and even two-colored flowers. It is an important medicinal plant from which anti-cancer drugs are derived. But the alkaloids, which are included in the preparations, are very poisonous and therefore this plant also requires careful handling.

Gloriosa, which contains very dangerous alkaloids, is also a highly poisonous plant.

We now have a very poisonous indoor plant oleander. It contains cardiac glycosides and two cases of mass poisoning with this plant are mentioned in history, when the soldiers of Hannibal and Napoleon fried meat strung on sticks of this plant at a halt.

Aucuba japonica, if accidentally ingested, can provoke intestinal upset, and in large quantities, cause internal bleeding.

Codiaeum (croton) causes contact dermatitis, as well as indoor primrose inverse-conical (obkonika).

Clivia contains alkaloids lycorin, clivimin, which, even in small quantities, can cause intestinal upset. For example, toxicology manuals provide examples of poisoning by this plant of two children 5 and 8 years old in Berlin, who ate the fruits of this plant. The relative of clivia, hippeastrum, has similar properties.

All types of ficuses secrete milky juice, which contains furocoumarins. The same substances are contained in cow parsnip and, if they come into contact with the skin, cause burns.

A few words must be said about ivy. In fact, they are used as medicinal plants and from ordinary ivy, which is widespread throughout Europe and on the Black Sea coast of the Caucasus, they make preparations for coughing. The whole plant contains a large amount of saponins, which are irritating when ingested into the gastrointestinal tract, and when in contact with the skin, cause redness and itching.

Begonias differ greatly in their toxicity - from moderately poisonous to absolutely safe, which the local population uses in their homeland as vegetable plants. But, for example, tuberous begonias, if ingested, lead to severe diarrhea.

Here we also do not mention such a factor as a banal allergy, which is unpredictable and can manifest itself in relation to any plant. So, before you make a green friend, still read his biography and character and correlate with your conditions.

Harmful house plants

Philodendrons are the favorite indoor plants of many people.

Perhaps this is one of the most popular houseplants. The advantages of the flower are obvious: it has an attractive appearance, grows quickly and is not particularly whimsical.

But while this plant is the perfect addition to any room, it contains calcium oxalate crystals that are toxic to humans and animals.

Philodendrons can be curly or non-curly

It is very important to keep the climbing plants hanging out of reach of children or pets, and to trim the leaves and antennae in time. Non-climbing plants should be stored on high windowsills or shelves so that children or animals cannot reach them.

Non-growing plants should be stored on tall windowsills or shelves to prevent children or animals from reaching them.

Side effects in humans:

In humans, especially in young children, the following reactions to the plant can be observed: dermatitis, irritation of the skin, swelling of the mucous membranes and upset of the digestive system when eating the leaves of the plant.

There are several known cases when, after eating leaves by children, the incident ended in death.

The effect of the plant on cats and dogs:

Philodendron has a much more serious effect on pets. We can talk about spasms, cramps, pain and swelling.

By the way, the plant poses the greatest threat to cats.

2. Epipremnum golden

Epipremnum golden or in the common people devil's ivy is considered one of the most popular indoor plants. It does an excellent job of cleaning indoor air.

In addition, the attractive appearance of the plant will leave few people indifferent. Beautiful variegated leaves are a real decoration for the room.

Devil's ivy is, in fact, considered one of the most beneficial indoor plants for removing harmful impurities from the air.

The flower also has the advantage that it multiplies easily and quickly from its own cuttings. So pretty soon you get a whole mini devil ivy plantation in your house.

However, is it so safe for household members?

In small amounts, this plant is believed to cause almost no harm. But in rare cases, it can also have serious side effects in animals and humans.

Side effects in humans:

Burning in the mouth, skin irritation, swelling of the lips, tongue and throat, vomiting, cramps and diarrhea.

The effect of the plant on cats and dogs:

Drooling, choking, swelling of the mouth and tongue, shortness of breath and indigestion. In some cases, the plant can also lead to kidney failure and / or death.

3. Syngonium leg-leaved

Many people confuse this plant with a philodendron. Indeed, they are similar and it is also very easy to care for.

It is usually mixed in gardens with other plants that require similar maintenance. This, undoubtedly, a beautiful plant has heart-shaped leaves, and is often presented as a gift to dear people.

Young plants are very dense. Older plants produce arrow-shaped stems and leaves.

The flower regularly sheds its leaves and sprouts new growth, therefore, it is recommended to regularly check the plant and clean it of fallen leaves.

Side effects in humans and animals:

Irritated skin, upset stomach, vomiting.

Watch the video: Poisonous Indoor Plants. Toxic Plants. Smiley Plants