Euphorbia lactea is a species of spurge native to tropical Asia, mainly in India. It is an erect shrub growing up to 5 metres tall, with succulent branches 3–5 centimetres diameter, with a triangular or rhombic cross-section, and spiny ridges.
Euphorbia lactea is a tall, dark-green, many-branched, cactus-like shrub or small tree hairless throughout. It has a distinctive silhouette and can grow 3-6 m tall (or more) but rarely does in cultivation. Euphorbia lactea is one of the most common succulent euphorbias in cultivation, but highly variable with several forms and hybrids making precise descriptions of it difficult. Variegated and crested Euphorbia lactea is a popular subject for grafting; prized specimens are intricately convoluted and blend creamy white with shades of green and pink.