Hippeastrum petiolatum, commonly known as Azucena De Río, is a deciduous perennial bulb native to the riverbanks and moist areas of Southern South America, particularly in Argentina and Uruguay. It typically grows to a height of 30–40 cm. The plant features showy, trumpet-shaped flowers that are 10 cm in diameter, displaying a vibrant scarlet-red color with purple veins and a greenish-yellow throat. The flowers are usually borne in clusters of 3–4, though occasionally there may be 5. They bloom in the spring and are quite eye-catching, making them a focal point in any garden. The large bulbs can reach 10 to 15 cm in diameter. The leaves of Hippeastrum petiolatum may persist throughout the year in optimal conditions.

Azucena De Río is valued for its striking flowers and is often used in ornamental plantings, borders, and container gardens. It thrives in full sun to part shade and requires moist but well-drained soil. While it prefers high moisture levels, it is important to avoid waterlogging to prevent bulb rot. This species reproduces solely by lateral bulbils, as it does not produce fruit. Gardeners should note that the bulbs can be sensitive to frost and may need protection in cooler climates.CC BY-SA 4.0