Euphorbia milii, also known as the Crown of Thorns, Christ Plant, or Christ Thorn, is a species of flowering plant in the spurge family Euphorbiaciae, native to Madagascar.
Euphorbia Milii is a succulent, climbing shrub growing to 0.8 m tall, with densely spiny stems.
The straight, slender spines, up to 30 mm (1.2 in) long, help it scramble over other plants.
The leaves are found mainly on new growth, and are obovate, up to 35 mm (1.4 in) long and 15 mm (0.59 in) broad.
The flowers are small, subtended by a pair of conspicuous petal-like bracts up to 12 mm (0.47 in) broad, variably red, pink, yellow or white.