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Euphorbiaceae BUSH BOTH Placement Primary: Other Ornamental

African Milk Tree

Euphorbia trigona

Identified By Marcs

The African Milk Tree, scientifically known as Euphorbia trigona, is a striking perennial succulent shrub native to Central Africa. Despite its common name and cactus-like appearance, it is actually a member of the spurge family (Euphorbiaceae). Characterized by its upright, multi-branched growth habit, three-sided dark green stems adorned with pale green or whitish patterns, and small teardrop-shaped leaves, it makes a dramatic statement in indoor and outdoor settings. It is remarkably resilient, drought-tolerant, and thrives in bright, indirect to direct sunlight. When damaged, the plant exudes a milky latex sap that can cause severe skin irritation and is toxic if ingested by humans and pets.

Also known as: High Chaparral African Milk Bush Candelabra Cactus

Toxicity & Safety

Is African Milk Tree toxic to pets?

Yes, toxic to pets.

The African Milk Tree is highly toxic to pets, including cats and dogs. The plant contains a milky white latex sap that is present in all of its tissues. When a pet chews, bites, or breaks the stems or leaves, this caustic sap is released. Contact with the skin or eyes can cause severe irritation, redness, and painful inflammation. Ingestion of the sap leads to severe gastrointestinal distress, characterized by drooling, vomiting, diarrhea, and abdominal pain. Immediate veterinary attention is strongly recommended if exposure or ingestion occurs.

Is African Milk Tree toxic to humans?

Yes, toxic to humans.

The African Milk Tree is toxic to humans due to the milky white latex sap contained within its stems and leaves. Handling the plant without protective gear can lead to severe skin irritation, rashes, and allergic contact dermatitis. If the sap accidentally comes into contact with the eyes, it can cause excruciating pain, temporary blindness, or severe conjunctivitis. Ingestion of any part of the plant causes severe poisoning symptoms, including intense burning of the mouth and throat, nausea, vomiting, and diarrhea. Always wear gloves and eye protection when pruning or handling this botanical specimen.

Is African Milk Tree safe during pregnancy?

Caution advised during pregnancy.

Ingestion or severe systemic exposure to the toxic latex sap of the African Milk Tree poses significant health risks that can indirectly endanger pregnant women. The severe gastrointestinal distress, vomiting, and intense physiological reaction caused by poisoning can induce complications. Furthermore, handling the plant without adequate precautions risks severe dermatological reactions or accidental eye contact with the caustic sap, which requires medical treatments that may be complicated during pregnancy. Pregnant individuals should strictly avoid handling or ingesting this plant.

Growth & Dimensions

Height 60 - 250 cm
Width 30 - 90 cm
Growth Rate Moderate
Care Level Easy
Lifespan Perennial

Ideal Environment

Temperature 15°C - 32°C
Sunlight Hours 6 - 10 hrs/day
Sun Exposure Full sun
Soil pH 6 - 7.5
Watering Interval 14 - 30 days
Humidity 20.00% - 50.00%
USDA Zone 10 - 11

Tropical and Subtropical Arid Zones

Climate: Thrives in warm, dry climates with high light intensity and minimal frost risk, tolerating extended periods of drought with ease.

Soils: Sandy Soil Loam Porous Cactus Mix
Annual Rainfall: 200 - 800 mm

Native Regions

Central Africa
Gabon
Republic of the Congo

How to Care for African Milk Tree

How should I handle watering your african milk tree?

Allow the potting soil to dry out completely between watering sessions to prevent root rot, which is a common issue for succulents. During the active growing season in spring and summer, water thoroughly until it drains from the bottom, then wait until the soil is bone dry. In the winter dormant period, reduce watering significantly to once every month or even less frequently, as excessive moisture in cold conditions will quickly kill the plant.

How should I handle sunlight requirements?

Place your African Milk Tree in a location that receives plenty of bright, direct sunlight for at least six hours a day. South or west-facing windows indoors are ideal choices to keep the stems strong and prevent etiolation. If grown outdoors, transition it gradually to full sun to avoid scorching the outer tissues. Insufficient light will result in weak, stretched stems and a loss of the vibrant coloration on the leaves.

How to Propagate African Milk Tree

How to propagate African Milk Tree by cutting?

To propagate the African Milk Tree via stem cuttings, first put on heavy gloves and protective eyewear to guard against the toxic latex sap. Carefully select a healthy branch or side shoot and use a sterilized, sharp knife to cut it cleanly off the main stem. Immediately spray the cut areas with lukewarm water to stop the sap flow, then set the cutting aside in a warm, dry, shaded location for several days until the cut end forms a dry, protective callus. Once calloused, plant the cutting upright a few centimeters deep into a small pot filled with a pre-moistened, sterile, fast-draining cactus and succulent soil mix. Place the pot in bright, indirect light and water very sparingly until a robust root system develops over the next few weeks.

Common Diseases & Pests of African Milk Tree

What is Root Rot and how is it treated?

Fungal
Symptoms:

The lower stems become mushy, discolored, and turn yellow or brown. The plant may start leaning or become unstable in its pot due to decaying roots that can no longer anchor it properly.

Treatment:

Remove the plant from its pot, gently wash away the old soil, and use a sterilized blade to cut away all infected and mushy root sections. Allow the remaining healthy roots to dry and callous over for a couple of days before replanting in fresh, well-draining succulent soil.

Prevention:

Ensure the planting pot features adequate drainage holes and use a gritty, porous soil mix specifically formulated for cacti and succulents. Always allow the soil to dry completely between watering sessions and never let the pot sit in standing water.

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