Succulents
Succulents Plant & Care Guide
← Species • Family: Euphorbiaceae ⚠️ Toxic to Pets

African Milk Tree (Euphorbia trigona)

Euphorbia trigona

African Milk Tree (Euphorbia trigona)

Euphorbia trigona, commonly known as the African Milk Tree, is an architectural succulent shrub native to Central Africa, characterized by erect, 3- to 4-angled ridged stems lined with paired spines and teardrop-shaped leaves. Despite strongly resembling a columnar cactus, it is a true member of the spurge family (Euphorbiaceae) and exudes a toxic milky white latex when cut or injured. In indoor culture, it is highly valued for its vigorous upright growth, dramatic vertical silhouette, and effortless adaptability.

📋 Core Botanical Care Parameters

☀️ Light Requirements

Bright indirect light or gentle morning direct sunlight. Protect from scorching midday sun through glass, which may burn the tender foliage.

💧 Watering Frequency

Soak-and-dry method. Water thoroughly only when the entire potting mix is completely dry during the growing season; reduce drastically to once a month or less in winter.

🏺 Soil Mix

60% Pumice/Lava Grit + 40% High-quality Cactus Peat

❄️ Cold Tolerance

5°C (USDA Zone 10b)

🌱 Propagation Method

Stem cuttings. Rinse cut ends in cold water to halt latex flow, allow the wound to callus for 5-7 days in a shaded area, and insert into dry gritty mix (wear protective gloves).

⚠️ Toxicity Warning

This plant contains toxic sap/compounds. Keep out of reach of cats and dogs.

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Watering Method: Bottom Watering (Immersion)
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Golden Rule:

Never water until at least 80% of soil is completely dry!

🌿 Related Succulent & Cactus Species

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Pencil Cactus / Firesticks (Euphorbia tirucalli) ⚠️ Toxic to Pets Euphorbiaceae
Euphorbia tirucalli

Pencil Cactus / Firesticks (Euphorbia tirucalli)

Native to arid regions of Africa, this succulent shrub or small tree features dense clusters of cylindrical, pencil-thick photosynthetic branches with minute, ephemeral leaves. Cultivars like 'Firesticks' glow in brilliant shades of yellow, orange, and fiery red under full sun and drought stress. When damaged, it exudes a highly caustic and irritating milky white latex sap.

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Euphorbia obesa

Baseball Plant (Euphorbia obesa)

Endemic to the Great Karoo region of South Africa, Euphorbia obesa is a spineless, spherical succulent exhibiting exquisite geometric symmetry. It is a strictly dioecious species that matures from a solitary ball-shaped habit into a cylindrical columnar form accented by fine, tartan-like striations. Highly prized in cultivation, wild populations remain protected under CITES Appendix II due to historical overcollection.

❄️ -2°C (USDA Zone 9b) Inspect →
Crown of Thorns (Euphorbia milii) ⚠️ Toxic to Pets Euphorbiaceae
Euphorbia milii

Crown of Thorns (Euphorbia milii)

Native to Madagascar, Euphorbia milii is a resilient, semi-succulent shrub characterized by dense, woody stems armed with prominent sharp spines. It is widely cultivated for its vibrant, petal-like floral bracts that can bloom continuously throughout the year under warm conditions. The plant exudes an irritating, milky white latex sap when damaged, typical of the Euphorbiaceae family.

❄️ +2°C (USDA Zone 10a) Inspect →
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African Milk Barrel Succulent (Euphorbia ferox): Complete Care & Growing Guide Succulent Varieties 10 min read
10 Nov 2026 • Rıfat Özkan Rıfat Özkan

African Milk Barrel Succulent (Euphorbia ferox): Complete Care & Growing Guide

Hailing from the arid limestone hills of South Africa, the African milk barrel succulent (Euphorbia ferox)—often affectionately called the pincushion euphorbia—brings striking architectural beauty into our living spaces with its ribbed, fleshy cylindrical stems and formidable spines. In this master horticultural guide, discover its evolutionary secrets, foolproof watering regimen, ideal mineral substrate formulation, and essential handling precautions.

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Botanical Tip of the Day Verified Botanical Fact

Opt for porous terracotta pots with drainage holes to keep root balls cool and well-aerated. 🪴