African milk tree

African milk tree Care

Euphorbia trigona

Other names: Cathedral Cactus, Abyssinian Euphorbia, High Chaparall

What is the plant

African milk tree is a well-known decorative plant with a dramatic size that will surely enhance your landscape. Coveted by many and grown by few, this succulent still tops the list of popular plants.

African milk tree (Euphorbia trigona) comes from Central Africa. Being a rapid grower with triangular stems, it stays lush and green and spruces up your garden. When grown indoors, this plant will take each half of its height but will still look spectacular.
African milk tree is also known as the cathedral cactus, candelabra cactus, friendship cactus, and good luck cactus. In fact, however, it is a succulent.

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Humidity

Dry

Lighting

Full Sun

Temperature

10°C - 18°C

Hardiness zone

9b - 11b

Difficulty

Easy

Toxicity

Poisonous

How to Care for the Plant

Water
When grown outdoors, Euphorbia trigona does well only with rainfall, provided it is not too hot in your area. The indoor plants need to be watered every 7-10 days if the soil has dried out. If it is still moist, hold on a bit by giving your plant a drink.
Pruning
Proper pruning is crucial for an African milk tree as it can easily topple over due to its shallow roots. Remove the stems to make the plant look balanced on both sides. When pruning, wear gloves at all times and opt for a sharp, sterilized pair of scissors.
Fertilizer
Feed your plant only during its growing season, which is spring and summer. Apply a water-soluble fertilizer diluted to half-strength on a monthly basis.

Disease diagnosis

Check your plant’s health

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Sunlight
Euphorbia trigona prefers bright indirect light, so you can choose an east-facing or south-facing window indoors and a spot with partial sun outdoors. Full sun is advised only if the summers in your area aren’t too hot, but in this case, your plant will require more frequent watering.
Soil
Sandy and loam soils are best for all succulents, African milk trees being no exception. If you grow it indoors, add some perlite for better drainage.
Propagation
You can propagate the candelabra cactus from cuttings, but remember to wear protective gear for your own safety. If you get some of the milky sap on your hands, wash them immediately.

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Temperature
African milk trees are drought-resistant but not cold-hardy. If the temperatures in your climate zone tend to drop below 50˚F (10˚C) in winter, it is better not to plant it outdoors. If you have it as a potted plant, overwinter it indoors.
Container
This succulent plant will thrive in a porous clay pot with drainage holes and a pot saucer. The clay will absorb excess water and help you avoid overwatering if you empty your pot saucer right after watering.
Fun fact
Not so fun, but a fact: the sap of your good luck cactus won’t bring you any luck. On the contrary, it is highly toxic to humans and pets as it can irritate your eyes and skin or even cause blisters. Take care!