Trichocereus bridgesii v. monstrose. Syn: Echinopsis lageniformis f. monstrose.
Native to Bolivia, it’s believed these plants are traditionally regarded as a sacramental medicine. They’re popular plants for a number of reasons but I just find them fascinating.
The plant enjoys free draining potting medium / soil. I grow mine in a part shade position, give them minimal water and add rock minerals as a fertiliser.