Cactus spurge

A spurge which apparently thinks it is a cactus. Don’t tell her.
Common name : Cactus spurge
Scientific name : Euphorbia erithreaea
Family : Euphorbiaceae
Category : Indoor
Type of plant : Perennial
Euphorbia erythraea is a tree-like spurge growing up to 10 m tall and superficially similar to some new world Cacti, like Cereus peruvianus. Being sensitive to cold under 8°C, it is mainly cultivated as a houseplant in temperate climates.




Water needs
Granulométrie plants.granulometry_5
Frost-resistance Low
Zone USDA 11b
Height 40 - 100
pH 6.5 - 7.2

Identify my cactus spurge

The tree spurge we grow in our homes is Euphorbia erythrea, probably of horticultural origin. It is very similar to the wild species Euphorbia ingens, but is more branched. It is therefore recognizable by its green, 4-sided stems, which take a long time to become woody. The edges are bearing small spines. Flowering is very rare in temperate climate.

Plant my cactus spurge

Plant your tree spurge in a light, porous and well-drained growing medium to prevent water from stagnating at root level - enrich it with sand - it's a great idea! Euphorbia needs a lot of light. In pots inside, place it in front of the windows so that it stays beautiful even in winter. In winter, it will prefer a cool room. In summer, do not hesitate to take it out if the conditions are favorable.

Water my cactus spurge

Euphorbia erithreaea tolerate infrequent watering, hate stagnant water, especially in heavy soil. The watering rate varies with the season, as your plant "evaporates" more when it receives a lot of light. How to do ? You can use tap water or reclaimed water. Sprinkle gently, and if you see water in the cup, empty it at the end of watering.

Fertilize my cactus spurge

Euphorbia erithreaea can live or survive with very little nutrients! But if you want beautiful vigorous plants, a supply of fertilizer can help. Just use a liquid fertilizer, geranium or tomato fertilizer is fine. The special fertilizer fo cactus is almost identical, but more expensive! Fertilize on every other watering during the growing season.

Repot my cactus spurge

Repot in early spring. If you missed the right moment, it's not that big a deal. Repot your cacti every 3 or 4 years with potting soil mixed with a lot of sand. The growth is related to the frequency of repotting: a cactus never repotted will stop growing! When repotting, remove the old soil and dead roots as much as possible, while being careful not to damage the larger ones. To facilitate drainage, place a layer of coarse sand in the bottom of the pot, or even pebbles for large plants. Once the repotting is complete, wait one to two weeks before watering, so that the damaged roots heal. Otherwise, there is a risk of rottening the plant.

Shelter my cactus spurge

Bring your cactus spurges in before the first cool nights, because it "freezes" at 8 ° C.

Put outside my cactus spurge

Do not hesitate to take out your euphorbia for the summer! If it has spent the winter in the shade, just avoid placing it directly in full sun, acclimate it slowly ... You should shelter it back at the end of the summer.

Propagate my cactus spurge

Tree spurges multiply very well by cuttings. Cut a 10 cm section in the spring. Choose a stem that is quite tender, neither too old nor too young and without any trace of disease. Also make sure not to make the mother plant unsightly! With a very sharp knife, select a piece of stem or leaf, at a joint. Put some water on the scar, it causes the coagulation of the latex ;-) Leave the cutting outdoors, in a warm place, to dry for a few days. Then put them in a terracotta pot, with a very light mixture composed of a third of potting soil or peat and two thirds of sand. Water then place the pot in a mini-greenhouse, at a temperature of 15 to 18 ° C, in a well-lit place, maintaining heat and humidity.

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