Euphorbia milii is native to Madagascar. It is a succulent, evergreen, subshrub and belongs to the Euphorbiaceae family or the Spurge Family of plants. They also call it the Crown of Thorns, Christ Plant, or Christ Thorn.
Euphorbia milii grows to about 6ft or 1.8m tall. The stems are very spiny. The spines are very prominent and about 3 cm or about 1 in. long. The leaves are fleshy, leathery, obovate, and green and usually present only on new growth. It flowers all year and produces tiny yellow flowers that are surrounded by a pair of bright red bracts.
Euphorbia milii can be natural pest control. It actually helps control snails. It also has medicinal value.
How to grow Euphorbia milii:
Grow Euphorbia milii in the sun. Plant it in dry to medium moisture and well-drained soil. It can be drought-tolerant but flowers more with some moisture. However, wet or soggy soil even in winter can destroy it. Propagate Euphorbia milii by seed or tip cuttings. Euphorbia milii is poisonous if ingested.
Also, read about Euphorbia tirucalli ‘Stick on Fire’.