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Euphorbia Trigona

Euphorbia trigona

houseplant

verifiedReviewed by the GreenScout Team

Also known as African Milk Tree, Euphorbia Trigona is a striking succulent with columnar, three-sided stems and minimal foliage. It makes an excellent architectural houseplant for bright spaces and can grow quite tall indoors. The sap is caustic and toxic, requiring cautious handling.

Common Problems

Select the problem your Euphorbia Trigona is experiencing to get a treatment guide.

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Root Rotchevron_right

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Overwateringchevron_right

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Wiltingchevron_right

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Brown Spotschevron_right

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Pale Leaveschevron_right

Care Guide

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Light

Bright, indirect to direct sunlight; needs 6+ hours of light daily for best growth and shape.

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Water

Water deeply when soil is completely dry; typically every 2–3 weeks in growing season. Minimal water in winter.

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Soil

Well-draining cactus or succulent mix; ensure pot has drainage holes.

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Fertiliser

Feed lightly during growing season (spring/summer) with diluted succulent or balanced fertilizer monthly; skip in winter.

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Temperature

Prefers 65–75°F (18–24°C); tolerates warm conditions but avoid cold below 50°F (10°C).

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Humidity

Thrives in low to moderate humidity; sensitive to excessive moisture.

Toxicity

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Caustic white sap can cause severe skin and mucous membrane irritation. Poisonous if ingested. Handle with gloves.

Common Diseases

filter_dramaRoot Rotchevron_right

Common Pests

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Seasonal Care

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Resume regular watering and feeding as growth picks up.

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Peak growing season. Water and feed regularly.

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Reduce watering as growth slows. Stop heavy feeding.

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Minimal watering and feeding. Protect from frost if needed.

Frequently Asked Questions

Is the sap of Euphorbia Trigona actually dangerous?

Yes — its white latex sap is caustic and toxic, capable of causing significant skin and eye irritation on contact and gastrointestinal upset if ingested. Always wear gloves when pruning or repotting.

Why is my Euphorbia Trigona losing its small leaves?

Some leaf drop, especially in winter or under stress, is normal for this succulent — the tri-angled green stems (not the sparse leaves) are the plant's main photosynthetic structure, so leaf loss alone isn't usually cause for concern.