@DailyPlantBot Looks like a Fairy Castle Cactus to me, Acanthocereus tetragonus

— Ben Stover (@cactusgasm) 2021.8.25

basically every windowsill in my house roll call: pilea, ficus lyrata (fiddle leaf fig), monstera deliciosa, novice phalaenopsis orchid, and acanthocereus tetragonus (fairy castle cactus) https://t.co/fnjbFrZe0b

— ✪ seanzen ✪ (@seanfranzen) 2021.6.24

@100talkpod The small one with the flowers is a spiny pincushion cactus idk it's botanical name and the other one is a Fairy Castle Cactus (Acanthocereus tetragonus).

— Shaaranya (@DrPubz) 2021.4.5

5 years later.. Acanthocereus tetragonus “fairy castle”. #cactus https://t.co/xV2K4h9M45

— Mimi H. (@mir_u00) 2020.10.8