Fat plants

Euphorbia Trigona

Euphorbia Trigona

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General characteristics

medium-sized succulent shrub, from central Africa, in the wild they reach 2-3 meters in height, developing a broad stem and a rounded crown. It has long erect stems, with a triangular or square base, quite branched; on the vertices of the sides of the stems there are paired, very sharp spines. The stems are dark green, with white or pinkish spots; at the apex of the stems there are numerous leaves, rounded in shape, 2-3 cm long, green or pink. There are also varieties with reddish stems and leaves. In the places of origin in summer they produce small flowers, which bloom among the thorns. They grow quite rapidly, and can easily reach 150-200 cm in a container; they are among the most cultivated as houseplants.


From March to October they can be placed outdoors, in a bright but partially shaded place, which receives the sun's rays only during the coolest hours of the day, especially in July and August; they fear the cold, so in winter they should be kept at a minimum temperature of 8-10 ° C, or in an apartment, in a bright place.


During the vegetative period water abundantly, always waiting for the soil to dry well between one watering and another; in the cold months water only sporadically; if the plants are kept at temperatures below 8 ° C, avoid watering. It may happen that these plants lose their small leaves, without showing any other signs of deterioration, this may be due to excessive exposure to sunlight or a very prolonged period of drought.


Grow in a good, loose and humus-rich soil, very well drained; a suitable soil can be prepared by mixing balanced soil with fine sand and little pumice stone.


In nature it occurs by seed, placing the small seeds on the surface of a good seeding soil, to be kept constantly moist until germination is complete; the young seedlings must be kept in a partially shaded and protected place for at least a couple of years before being able to plant them individually. The euphorbie trigone also propagate by cuttings, with great ease; it is advisable to rinse the cutting surface with warm water before burying it.

Euphorbia Trigona: Parasites and Diseases

In conditions of excessive humidity they can be affected by botrytis and root rot; they are often attacked by cochineal and aphids.