Euphorbia Trigonia green 4”

Euphorbia trigona (green form), commonly called African milk tree, is a columnar succulent native to Central Africa known for its upright, triangular stems with ridged edges and small, short-lived leaves along the margins. What makes this plant special is its strong, architectural growth—clean vertical columns that branch over time, creating a structured, tree-like form indoors.

Light drives how thick and stable the stems grow. Place it in a south or west-facing window where it receives strong, direct light. Under grow lights, use 5000K–6500K placed 6–10 inches from the top of the plant. In lower light, the stems will stretch thinner and become unstable, often leaning or bending. Strong light keeps the growth dense, upright, and evenly formed.

Watering should be minimal and controlled. Allow the soil to dry out completely between waterings, then water thoroughly and let it dry again, using a fast-draining mix of succulent soil, perlite, and orchid bark. This plant shows issues through its structure—if the base softens or turns dark, the roots are staying too wet. If growth becomes elongated or pale, it’s reacting to light, not water. Small leaves along the edges may drop naturally, but soft or mushy tissue always indicates excess moisture.