The San Pedro cactus (Echinopsis pachanoi), formerly Trichocereus pachanoi, is the oldest known magical plant from South America. Originally this plant comes from Ecuador and Peru, there it still grows on the highlands on 2000-3000 metres.
This fast-growing cactus has 4 to 9 ribs and a strong root system. In nature, the San Pedro cactus will continue to grow until it falls over under its own weight. The fallen cactus will root again and produce many new shoots. The San Pedro is often used as a base for grafting other, more difficult to cultivate, cacti on top of it.
The San Pedro itself can be grown from seeds. It can be grown under dry as well as wet circumstances. It grows up most quickly when it's watered regularly. However, without water, the plant can survive for years and even produce new sprouts.