Columnar cactuses, such as Mexican organpipe (Stenocereus marginatus), add drama to arid landscapes, whether planted in the ground or in containers. Although some types of cactus can take a long time to mature, this one grows at a fairly moderate rate. In addition, its small spines are localized along white margins that run down the side, making it easier to avoid getting accidentally pricked.
This Tall Cactus Stands Out in Drought-Tolerant Gardens (6 photos)