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.
Crayon Shin-chan: My Moving Story! Cactus Large Attack!
Shinnosuke ate the food that was passed from the Mayor and wanted to have a pee. But it was forbidden by Mayor's law to stand and pee on the roads. So, he had to go into the fields to pee. While peeing, a small killer cactus came near him. Shinnosuke peed on the cactus. To his surprise, the cactus got wrinkled and died. He wondered if pee was the weakness of the cactus. He told this thing to the Mayor, who was still busy thinking of his revitalization plan. Then they all realized that the weakness of cactus is water.