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Image of Euphorbia trigona (Euphorbia trigona)

Euphorbia trigona imagePhoto: Author Frank VincentzGFDL

African Milk Tree

Euphorbia trigona

Also known as: Euphorbia Trigona, Cathedral Cactus, Abyssinian Euphorbia
Native to Central Africa

A succulent shrub with upright stems and upward-growing branches, featuring triangular or quadrangular stems. Dark green stems display distinctive V-shaped light green patterns with 5mm paired thorns along ridges. Produces teardrop-shaped leaves between thorn pairs. Notable for its architectural form and milky latex sap. Never observed flowering in cultivation, suggesting it may be a sterile hybrid.

Plant Care Overview

Difficultyeasy
LightBright light
WaterAllow soil to dry completely between waterings
Humiditylow

Care Guide

Essential requirements for your Euphorbia trigona

Light & Location

Light Requirements

Bright light

Light conditions can affect leaf color and growth rate. Adjust placement as needed based on your plant's response.

Water & Humidity

Watering Schedule

Allow soil to dry completely between waterings

Humidity Needs

low humidity

Always check soil moisture before watering. Adjust frequency based on your home's conditions.

Temperature & Environment

Temperature Range

Prefers 15-27°C (59-80°F), tolerates brief drops to -3°C (27°F)

Native Climate

Native to Central Africa

Keep away from drafts, heaters, and air conditioners which can stress your plant.

Soil & Nutrition

Soil Type

Sandy, well-draining soil

Fertilizer

Balanced houseplant fertilizer during growing season

Consider repotting every 1-2 years to refresh soil nutrients and accommodate growth.

Propagation

Methods to grow more Euphorbia trigona plants

Stem cuttings dried for 3-7 days to form callus before planting

Plant Info

Characteristics and background information

Plant Characteristics
Native Region

Central Africa

Growth Rate

fast

Mature Size

1.5–3 m (4 ft 11 in – 9 ft 10 in)

Lifecycle

Perennial

Pet Safety

Toxic to pets

Fun Fact

Exists exclusively in cultivation with no known wild specimens, potentially originating as a ancient hybrid

Troubleshooting

Solutions for typical issues with your Euphorbia trigona

Structural instability
Symptoms

Mature plants topple due to shallow root system

Community Tips

Advice shared by other plant enthusiasts

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