Neobuxbaumia

Neobuxbaumia polylopha is a columnar cactus with a thick telephone pole-like stem up to 7-12 m tall with many, narrow, closely spaced ribs ; The flower are diurnal, vivid pink, dark red or magenta near the top of the cactus.

Neobuxbaumia euphorbioides f. cristata is very strong and can grow up to 1 m in diameter and height (or more).