Tallest of the spiny Madagascan Euphorbias, to 2.5m ht. Complex spination bears close inspection. Flowers small, green in dense groups of up to 64. Untried outdoors; maybe OK if well drained & frost-free.
4.Indoors OK, Outdoors OK only if protected from winter rain.
Euphorbia didiereoides (w1080)
The pic/s tell the story.
Height: 12 cms Pot diameter: 12 cms