Despite its somewhat off-putting name, crown of thorns is a very pretty succulent plant that can bloom almost year round, even indoors. Although crown of thorns can grow into a woody shrub, it is also an ideal houseplant for most homes.
The plant likes the same room temperature that people enjoy and it can handle the lack of humidity prevalent in most homes during the winter. The name Crown of Thorns is derived from the belief by some that the crown of thorns worn by Jesus Christ at his crucifixion was made from stems of this plant. Besides the sharp black thorns on its main branches and stems, the sticky, latex sap from broken leaves and stems can be a skin and eye irritant. If ingested, all parts of the plant are toxic to people and pets. The plant has thick, bright green leaves grow along the new stem growth. The flowers are small and green, surrounded by showy bracts in red, orange, pink, yellow or white.