Euphorbia trigona – Bold, Low-Maintenance Vertical Grower
Euphorbia trigona, often called the African Milk Tree (though not a true tree), is a striking upright succulent with sculptural, three-angled stems and small, temporary leaves. Though often assumed to be native to Central Africa, this species is known only from cultivation and likely originated as a hybrid. Its dramatic silhouette, drought resistance, and easy-care nature make it an ideal choice for bright interiors and plant lovers who prefer structure with minimal fuss.
● What Makes Euphorbia trigona Stand Out
- Stem Shape: Distinctly three-sided, tall, and ribbed — forming a wing-like profile.
- Spines and Leaves: Short paired spines run along the ribs; small green leaves appear briefly near the tips and drop in low light.
- Growth Habit: Forms upright, candelabra-like columns that can reach 1.5 – 2 m indoors with time.
- Maintenance Level: Exceptionally low — thrives in dry air, infrequent watering, and bright light.
● Indoor Care for Euphorbia trigona
Light Requirements
- Needs bright, direct or filtered sunlight for at least 5 hours a day.
- Can adapt to bright indirect light, but may drop leaves or stretch slightly without enough sun.
- South- or west-facing windows are ideal indoors.
Watering Tips
- Water only when the soil is completely dry — usually every 2 – 4 weeks indoors.
- Less water is needed during periods of low light or cold, not based on season.
- Use a pot with drainage holes and avoid letting water sit at the base.
Best Soil Mix
- Use a gritty, fast-draining cactus mix.
- Optionally mix in extra perlite, pumice, or lava grit for better aeration.
Temperature Range
- Thrives in 18 – 28°C. Tolerates brief dips but protect from cold below 10°C.
- Avoid placing near cold drafts or heaters.
Fertilizing Schedule
- Apply a diluted cactus fertilizer every 4 – 6 weeks during periods of active growth.
- Skip feeding when growth slows due to weak light or lower temperatures.
Pruning and Shaping
- Prune for height control or to remove damaged stems.
- Always wear gloves — the white sap is toxic and irritating.
● Common Issues with Euphorbia trigona
Root or Stem Rot
- Caused by excess moisture. Use fast-draining soil and water only when fully dry.
- Cut away mushy sections and let wounds callous before repotting.
Yellowing Leaves
- Can signal overwatering or low light. Leaves may also drop naturally under stress.
Pests
- Occasional mealybugs, spider mites, or scale may appear, especially in dry homes.
- Treat with insecticidal soap or neem oil as needed.
Sunburn or Discoloration
- Sudden intense sun can cause pale spots or browning. Acclimate gradually to direct light.
● Extra Tips for a Thriving Euphorbia trigona
- Placement: Avoid high-traffic areas — spines can catch on skin or clothes.
- Dry Air Preferred: Does not benefit from misting — thrives in typical indoor humidity.
- Propagation: Cuttings root easily in warm temps. Let dry for 3 – 5 days before potting.
- Latex Warning: The milky sap is toxic and can cause severe skin or eye irritation. Use gloves and eye protection when cutting or repotting.
● Etymology of Euphorbia trigona
The genus Euphorbia is named after Euphorbus, physician to King Juba II of Mauretania. The species name trigona refers to its distinctive three-angled (tri-ribbed) stems — a hallmark of this architectural plant.
● Add Euphorbia trigona to Your Collection
If you're after bold form, low-maintenance care, and vertical impact, Euphorbia trigona delivers on all fronts. Order now and enjoy a sculptural statement piece that thrives in bright, dry spaces.
Euphorbia trigona
Euphorbia trigona Mill is approximately 50 cm tall and comes in a ⌀ 17 cm pot
