Botanical names: Harrisia bonplandii, Harrisia pomanensis subs. bonplandii, Cereus bonplandii
Common names: Applecactus, Midnight Lady, Queen of the Night, Giant Red Dragon Apple Cactus
Family: Cactaceae
Origin: Central America, South America
USDA Plant Hardiness Zone Map
Harrisia pomanensis is a spiny, evergreen, somewhat shrubby cactus with stems around 20 - 40mm in diameter that are more or less erect though sometimes arched and even prostrate. Harrisia bonplandii has white nocturnal flowers.
Similar plants: Harrisia bonplandii (Applecactus)
Link to this plant:
https://toptropicals.com/catalog/uid/harrisia_bonplandii.htm