Cleistocactus strausii
Silver Torch cactus can thrive in low-nitrogen soil without facing the consequences of low nitrogen. Too much water will make the plant weak and lead to root rot. 
Least Concern. This cactus is locally abundant in its native land and has few local threats to its survival.
This cactus can be propagated by cuttings or seed.
Sweetwater River (California)
The canyon is vegetated by palm trees, cottonwoods, arroyo willows and eucalyptus. Cactuses include desert barrel and teddy-bear cholla.