acanthocereus tetragonus or fairytale castle is a tall, columnar cactus native to south america

acanthocereus agricultural agriculture america areoles arid barbedwire blooming bole botanic botanical cactaceae cacti cactus castle cereus closeup columnar cultivation desert evergreen fairy fairytale farm field fresh garden green growth harvest leaf leave mexico native natural nature night outdoor park plant south spine stem succulent summer swordpear tall tetragonus thorn tree triangle