Indoor Euphorbia Trihedral

Euphorbia Trihedral (Triangular), or Euphorbia trigona, is a tropical perennial succulent bush. In natural conditions, it is found on the African continent, on the island of Madagascar, in South and Central America. In recent years, Euphorbia has been increasingly grown as a houseplant. It is easy to look after her, even beginners cope with the task.

Euphorbia Trihedral

Flower description

Often, Triangular Euphorbia is called a cactus. This is a misconception. The plant belongs to the Euphorbia family and has nothing to do with cacti. The appearance of the flower is a bit similar to the appearance of the prickly inhabitant of the deserts, but no more. You can better see how the cactus and Euphorbia Triangular look in the photo. Then it will become clearer what is the difference between the two.

Euphorbia Triangular is a succulent bush that grows in the tropics. In the wild, it can reach a height of 4-5 m, at home the tree stretches up to 2-3 m. The trunk has a diameter of about 6 cm. From it, fleshy trihedral branches rush up. The name of the plant comes from their form. The length of the branches can be 15-20 cm.

On the tops and faces of each branch, small oval leaves grow with pointed tips up to 4 cm long. The color of the leaves is dark green, and the branches are light green, sometimes white strokes are visible on them. There is a variety of burgundy shade, but it is very rare. Additional stems sometimes grow from the lateral faces. They need to be cut in a timely manner to give the bush the right shape.

Flowering plants at room conditions is impossible, they appreciate it for its beautiful faceted stems and the original shape of the bush. The root system of Euphorbia of the Triangular is poorly developed, therefore it is advisable to plant it in a deep and high pot. For a growing stalk, support is needed.

Flower juice, like other euphorbiaceae, is poisonous, therefore care and pruning should be carried out in full compliance with safety rules.

Features of daily care

Euphorbia Triangular and its maintenance is very simple, because it is recommended for cultivation in offices, galleries, shopping centers, because in public places it is difficult to carefully care for plants. A bush is also suitable for beginners lovers of indoor flowers. In order for the plant to develop and grow well, the following points should be observed:

  • Lighting. Euphorbia of any kind loves light, it tolerates even direct sunlight. The trihedral Euphorbia is no exception, but it must be accustomed to the light gradually. If you immediately put the pot on the south window, the bush may get burned. The variety grows well in a shaded place, unlike other varieties.
  • Temperature. Triangular Euphorbia is a tropical flower; it does not tolerate low temperatures. During the active growing season, the apartment should be 23-27 ° С, and during the rest period - 15-18 ° С. It is necessary to protect the indoor bush from drafts, you can not put it close to the glass in severe frosts.
  • Watering. The trihedral false cactus does not like overflow, but it tolerates dryness perfectly. In summer, it is watered no more than once every 6 days in small portions. In winter, the bush does not need water at all. It is important that the earthen lump is only slightly moist and the water does not stagnate, otherwise the plant will begin to rot.
  • Humidity. The bush does not need high humidity. If the apartment is too dry or the stalks of the Triangular Euphorbia become dusty, you can give him a small shower. The soil is covered with a film so that excess moisture does not damage the root system.
  • Fertilizers Feeding should begin in March and end in October. They make complex mineral mixtures for cacti no more often than twice a month.

Caring for the Triangular Euphorbia takes a minimum of time. Even very busy people are able to grow it at home. Indoor flower can develop with irregular watering, and with any type of lighting. The only rule is not to let it freeze.


Triangular Euphorbia needs pruning approximately 1-2 times per year. Its stems are able to grow several meters, let out long side shoots. From this, the shape of the bush deteriorates, and the size becomes so large that the bush does not fit in the apartment. Trimming Euphorbia Triangular is carried out with gloves, special glasses and a dense mask. If poisonous juice gets on the skin or mucous membranes, it can cause a serious burn.

Trim both tops and side branches. It is advisable to draw up a preliminary plan for the formation of a Triangular cactus bush. So that it does not grow too tall, cut off the top. The stems will quickly give lateral shoots that will form a beautiful "hat". So that the Trihedral Euphorbia does not grow in width, you should control the number of side shoots, leave the most beautiful and growing strictly up, and not to the side.

How to trim the Euphorbia Triangular and what tools to use? It is best to take a knife or a special garden pruner. When cutting, it is very important not to introduce an infection, therefore the instrument is well washed and wiped with alcohol. In order to guaranteed stop the further growth of the stems, it is advisable to heat it. On cutting, poisonous juice begins to stand out during circumcision. It is carefully blotted with a sterile gauze cloth, then sprinkled with a piece of charcoal.


Indoor succulent plant Euphorbia Triangular in the first years of life in the apartment needs an annual transplant. Further, it is advisable to transplant it into a new pot as necessary, when the roots completely occupy the previous one. It is best to do this procedure in late winter or early spring, at the very beginning of the growing season.

The size of the new pot should be 3-4 cm larger in diameter and in height than the old. Since the bush grows rapidly upwards and its crown is significantly superior in weight to the root system, the pots are often turned over. To prevent this, a layer of large heavy stones can be laid at the bottom, sprinkled with fine pebbles or crushed brick. Pebbles will increase the stability of the pot and play the role of drainage.

To transplant flowers, the soil can be taken ready, with a neutral reaction. Many experienced flower growers prefer to prepare the soil on their own. Take equal parts:

  • soddy soil;
  • leaf soil;
  • sand;
  • peat.

A layer of earth about 4-5 cm thick is poured at the bottom of the pot. Then the plant is removed from the old flowerpot, thoroughly cleans the roots of soil residues, put into a new container and sprinkled with earth. The transplant is done very carefully so as not to damage the young roots. After that, you can water the flower a little. Old Euphorbia Triangular should be replanted every 3-5 years, but the topsoil is updated annually.


Euphorbia Triangular is an indoor flower that can be propagated exclusively by cuttings. It takes root quite well and takes root, therefore there is usually no problem with breeding, even beginners can afford it. Material is prepared for propagation in the spring, during pruning, or at the moment when the transplant is made. Here are some helpful tips:

  • It is best to take lateral or upper strong shoots without signs of illness and defects.
  • You need to cut the branches with a sharp and clean knife along an oblique line.
  • The size of the handle should be about 10 cm.
  • Poison juice gently get wet with gauze and leave the stalk for several days in the room, so that the cut dry
  • Expanded clay or crushed brick is placed at the bottom of the container for planting Trihedral Euphorbia; sand and peat or soil for cacti are poured from the equal parts on top of the substrate.
  • Planted the stem in the ground, watered abundantly and put in a slightly shaded place.

When the stalk is rooted, it can be transplanted into a permanent pot. Euphorbia takes root for 4-6 weeks. You can just put a twig in some water. But with this method, the reproduction of Triangular Euphorbia is less successful, the percentage of engraftment is lower, an excess of moisture leads to rotting of the roots.

Plant diseases

When home care is wrong, indoor flowers wilt, get sick and die. In order to identify and fix the problem in time, you need to know the main symptoms of pathologies. Euphorbia Triangular affects the following diseases:

  • Drop of leaves (typical for overflow).
  • Drying leaves is a sign of low humidity at home.
  • Yellowing leaves. Indicates an insufficient or oversupply of mineral fertilizers.
  • Brown growths appear during sunburn, when the flowers are too long under direct rays.
  • Rotting stems, accompanied by an unpleasant odor, occurs when there is excess moisture or infection during pruning.
  • Slowing down growth (when the size of the pot is not suitable for the plant: it is too tight, a transplant is required).

Pests rarely annoy a bush, because its juice is poisonous. Only aphids are able to settle on leaves and stems. It is easy to detect when viewed from the Triangular Milkweed and assembled with a damp cloth.

Benefit and harm

From Euphorbia Triangular there is benefit and harm at the same time. It is grown at home, not just for the sake of beauty. The bush is able to absorb electromagnetic waves, therefore it is recommended to be placed near computers, in offices where there is a lot of equipment. Euphorbia also perfectly refreshes the air, neutralizing unpleasant odors. In this regard, pots are often kept in the kitchen. The energy of the plant is very strong, therefore it is not recommended to be placed in the bedroom so as not to disturb sleep.

In ancient times, a wild Trihedral Euphorbia or an indoor flower of this species was used for medical purposes. Healers from eastern countries collected juice to rid their patients of warts, lichen, corns and even intestinal parasites. In India, poisonous juice was dripped onto snakebites to neutralize the poisonous reptiles. Modern doctors talk about the dangers of such experiments: the harm from alternative therapy is greater than good.

If Triangular Euphorbia grows in a house, one must be very careful with it. It is necessary to protect children and animals from the flower so that they do not get poisoned by poisonous juice. Care for the bush should also be extremely careful so that milk drops do not get into the mouth or respiratory tract. Symptoms of poisoning are very unpleasant, sometimes even dangerous to health and life.

Before trimming the Euphorbia Triangular or caring for it, you need to wear gloves, glasses and a mask. Transplantation also requires the same precautions. If the juice accidentally drips onto the skin or mucous membranes, it is necessary to thoroughly wash the affected area with soap. If a bird or a pet accidentally ate a leaf, urgently need to contact a veterinarian. But this rarely happens with animals, because their instincts work. More often, small children get into trouble. You should not keep the flower at home if a preschool child lives in it.


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