Euphorbia polygona is a spiny dioecious spurge with simple or basally clumping stems of glaucous grey-green with beautiful “heads” of dark purple flowers. These are very minute in themselves, but each is dotted with bright yellow stamens and pollen and the whole effect is very pleasing. In age it will forms clumps of upright columns of unequal length up to a metre wide that bears a very close resemblance to the unrelated cactus. It is heavily armed with spiny protuberances ("peduncles", otherwise known as persistent flower stalks), however the spination is extremely variable some have lots of spines, and some have few.
Currently growing in 6 inch pot
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