African Milk Tree
Euphorbia trigona rubra
Rubra
About this plant
Euphorbia trigona rubra, commonly known as the African Milk Tree, is a striking succulent with upright, triangular stems that have reddish hues. It features small leaves along the ridges and can grow quite tall indoors. This plant is popular for its architectural shape and is often used as a decorative houseplant.
Taxonomy
- Genus
- Euphorbia
- Family
- Euphorbiaceae
- Higher classification
- Order: Malpighiales
- Plant type
- Succulent
- Lifespan
- Perennial
Origin & Distribution
- Native region
- Central Africa
- Distribution
- Native to Central Africa; widely cultivated as a houseplant worldwide.
Care
- Light preference
- Full sun
- Suitable locations
- Indoor, Outdoor, Balcony, Greenhouse
- Preferred window facing
- South-facing, West-facing, East-facing
- Watering frequency
- Rare
- Watering interval
- 14–21 days
- Humidity
- Low
- Minimum
- 10 °C
- Maximum
- 35 °C
- Optimal
- 18-26 °C
- USDA hardiness zones
- 9-11
- Soil pH
- 6.0-7.5 (neutral to slightly acidic)
- Soil type
- well-draining cactus or succulent mix
Watering. Water sparingly, allowing the soil to dry out completely between waterings. Overwatering can lead to root rot. Reduce watering in winter.
Fertilizing. Feed with a balanced, diluted fertilizer once a month during the growing season (spring and summer). Avoid fertilizing in winter when the plant is dormant.
Euphorbia trigona rubra is a tough, easy-to-care-for succulent that thrives in bright light and needs minimal watering. It prefers well-draining soil and can suffer root rot if overwatered. Regular pruning helps maintain its shape, but be cautious of its irritating sap.
Propagation
- Propagation methods
- Cuttings
- Care difficulty
- Easy
Ornamental features
- Flowering
- No
Distinctive upright, triangular reddish stems with small green leaves along the edges; architectural form.
Toxicity & Safety
- Toxic to humans
- Mildly toxic
- Toxic to pets
- Mildly toxic
- Weed potential
- Not considered a weed
The sap is toxic and can cause skin irritation or eye damage. Keep away from children and pets. Do not ingest.
Allergy information
- Allergy risk
- Low
- Allergy triggers
- Sap or latex, Skin contact
- Pollen level
- Low
Euphorbia trigona rubra can cause skin irritation or allergic reactions in some people due to its sap. Avoid touching the sap and wear gloves when handling or pruning the plant. Keep it away from children and pets to prevent accidental contact or ingestion.
Common problems
Overwatering can cause root rot and yellowing stems. Insufficient light may lead to weak, leggy growth. Sap contact can cause skin irritation.
Uses
Primarily grown as an ornamental houseplant for its unique shape and color. It can also be used in xeriscaping in suitable climates.
Notes
When pruning or repotting, wear gloves to avoid contact with the milky sap, which can irritate skin and eyes. Repot every 2-3 years or when root-bound.