The Columnar Trifecta: the saguaro (Carnegiea gigantea), the organ pipe (Stenocereus thurberi) and the senita (Pachycereus schottii) - Organ Pipe National Monument is the only place in the US where you can see these three cacti growing in sympatry in the wild. The organ pipe and the senita are largely Mexican cacti that barely make their way into southern Arizona. Join the wonderful Sara Johnson and me as we explore the Sonoran Desert for the first time in search of these wonderful succulents. This episode was produced in part by LetÃcia, Ron, Tim, Carl, Lisa, Susanna, Homestead Brooklyn, Daniella, Brodie, Kevin, Katherina, Sami & Sven, Sophia, Plant by Design, Mark, Rens, Mountain Misery Farms, Bendix, Irene, Holly, Clifton, Shane, Caitlin, Rosanna, Mary Jane, Manuel, Jennifer, Sara, and Margie.