Queen of Thorns is a species of flowering plant from the Euphorbiacede family. This plant is native to the desert regions of Mexico and Madagascar. In Europe, it was first introduced in France in 1821 and quickly gained popularity as a beautiful houseplant. In the wild, Queen of Thorns can reach a height of 6.5 feet (2 m). It will grow up to 3 feet (1 m) tall if it is indoors. The sprouts are covered with thorns. The true flowers are small and greenish, but bright red, orange, pink, yellow or write bracts surround them.