About Euphorbia pentagona Haw.
Euphorbia pentagona Haw. is a medium-green species of Euphorbia. Young plants grow in the shape of a pentagonal prism, with each vertex extending outward and each face slightly concave along the entire height of the plant. Fresh spines are red and emerge from each outward extrusion at equal intervals. As spines age, they typically fade and lose their color. As new branches grow from the sides of the plant, the cross-section can gain additional vertices, increasing the number of sides of its polygonal shape. New branches often grow from locations where a spine previously existed, or where a spine would normally grow.
