Selenicereus is a genus of cacti known for its large, beautiful flowers that typically bloom at night. These plants are native to tropical regions of the Americas and are often referred to as "moon cacti" due to their nocturnal flowering habits. They thrive in well-drained soil and require minimal care, making them popular among gardeners. The flowers of Selenicereus can be quite striking, often measuring up to a foot in diameter. They are usually white or yellow and emit a sweet fragrance, attracting nocturnal pollinators like moths. After blooming, the plants produce fruit, which can be edible and is sometimes referred to as "pitaya" or dragon fruit.