Fairy Castle Cactus - Acanthocereus Tetragonus Monstrose houseplant If you notice the leaves

If you notice the leaves turning yellow or the plant showing signs of stress

Frost tolerance: When dormant

more or less curved or twisted intergrading with the centrals 3-20 mm long

cold weather and requires a winter rest period (hardy to -12 C ° C

Best with some shade in hot summer regions

Fairy Castle Cactus - Acanthocereus Tetragonus Monstrose houseplant If you notice the leavesThe fairy castle cactus, known as Acanthocereus tetragonus 'Monstrose', is a unique cactus loved for its unusual, castle like shape. The term monstrose refers to its irregular growth pattern, which makes it different from the standard Acanthocereus tetragonus. This eye catching cactus grows in clusters of tall, branching columns and is also known by several other names, including barbed wire cactus, triangle cactus, fairytale castle cactus, and green