The Fishbone cactus is an epiphyte, meaning it's found in the wild growing on other trees or plants. Found in the Mexican forests of Guerrero, Jalisco, Nayarit and Oaxaca in elevations between 1,000 and 1,800 meters, the Fishbone cactus thrives in temperatures between 16 - 25°C. It's a fast-growing cactus and, whilst rare when kept as a houseplant, in the wild, the Fishbone cactus blooms white flowers in late autumn and early winter.