Peruvian Torch Cactus, aka Echinopsis Peruviana, is a columnar cactus native to the western slope of the Andes in Peru. Cacti are succulents, which means they can store large amounts of water to keep them alive through long droughts. They are not poisonous but watch out for their spines. They thrive in sun, need very little water, and would much rather be too dry than too wet.