Cleistocactus samaipatanus is native to Bolivia. It is a long, narrow columnar cactus, lime green in color, with 14 â€“ 17 ribs and stiff pale gold spines.
It grows trailing or erect, branching basally with several stems, up to 5 feet long and up to 2 inches in diameter, forming open bushes.Produces brilliant large, bright red to pink-red flowers that do not close at night, and they last about 4 days. They come in flushes in late spring to early summer. The fruits are small, spherical, and reddish with dense white and brown wool. The Cleistocactus is a vigorous plant, if you grow it in a container, repot it yearly with a loam based mixture. Hardy zone 9+. Drought tolerant. Fantastic and rare specimen cactus.