When left untouched, a crown of thorns plant can grow up to six feet tall and two feet wide. By cutting away older leaves, this will keep the plant a manageable size.

While Crown of Thorns is slow-growing, reaching about two feet in height when kept indoors, its spiky green leaves still pack a visual punch. This succulent is also quite simple to care for: here ...

My first recollection of the plant crown of thorns (Euphorbia milii) was at my aunt’s home in the 1950s. I noted that the stems were covered with thorns and ended with vibrant red flowers.

Crown-of-thorns sea stars walk along reefs in the Maldives. The sea creatures are native to waters throughout the Indo-Pacific, but their growing populations threaten sensitive coral reef habitats.

Various plants have been proposed as the source of the crown of thorns the New Testament says was placed on Christ's head in the lead-up to the crucifixion, and no-one knows for certain.