I hadn’t seen a Senita in the wild until we got to Mexico. While driving through the desert, I kept wondering what was up with the “hairy Organ Pipes,” once I got out and took a look, I realized they were a totally different species.
The Senita is another tall cactus (like the Saguaro and the Organ Pipe), measuring between 10′-20′ tall. They grow in large clusters, up to 100 stems. Their stems are hexagonal and waxy looking with a heavier concentration of spines at the tops of the stems that give them that hairy or shaggy appearance. The spines at the top of the stems are also longer than those at the bottom.