cactus ID

[Meaven]

i have uh, 10 enormous cactus that my grandmother left to me when she passed away, and they bloom at night... any idea what these are called? the flowers are white with a pinkish tinge, and about 6" across

 

[superimposedhope]

Looks like Echinopsis but there are too many tell which species or hybrid.

Joe

 

[KateKatinaite]

these are echinopsis. they blossom better if "children" are separated from "mother" plant