Being a part of the cactus family, Echinopsis oxygona, spelled ek-in-OP-sis ok-SEE-goh-nuh according to the NC State University, is a sweet looking and smelling plant to add to your home of houseplants. To care for Echinopsis oxygona use cactus soil containing ingredients such as loam and sand and keep it in bright light. This cactus …