Echinopsis pachanoi (syn. Trichocereus pachanoi) — known as San Pedro cactus — is a fast-growing columnar cactus native to the Andes Mountains at 2,000–3,000 m (6,600–9,800 ft) in altitude.
 
These are little young San Pedros, very hardy require very little care and produce very large beuatiful flowers once they reach adult size.
 
Although hardy drought and frost resistant they do prefer dryier conditions.