Epiphyllum oxypetalum, commonly called the Queen of the Night, is a species of cactus best known for its large, fragrant white flowers that bloom exclusively at night.

Unlike most cacti, which grow in arid environments, it is native to tropical forests in Mexico, Central America, and parts of South America, where it grows epiphytically—anchored to trees rather than rooted in soil.

The plant has long, flat, leaf-like stems and prefers humid, shaded environments. It uses its stems to absorb moisture and indirect light, allowing it to thrive high in the forest canopy. While classified as a cactus, it lacks spines and tolerates more moisture than desert-adapted species.

Its flowers, often up to 25–30 cm across, open after sunset and wither before sunrise. They release a strong, sweet fragrance during their brief bloom, likely to attract night-flying pollinators such as moths. Each individual flower blooms only once, usually in summer or early autumn, although mature plants can produce multiple blooms across a season.

Because flowering is unpredictable and happens at night, catching the event often requires careful observation of buds and some late-night vigilance. Despite its fleeting nature, the bloom is widely celebrated for its beauty and scent, making Epiphyllum oxypetalum a prized ornamental plant in many tropical and subtropical gardens.

Learn more:

• Wikipedia – Epiphyllum oxypetalum
• Gardenia – Epiphyllum oxypetalum