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Euphorbia trigona

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

€24.50Price
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  • Euphorbia trigona Mill is approximately 50 cm tall and comes in a ⌀ 17 cm pot

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