Aeonium undulatum, commonly known as the Saucer-Plant, is a striking succulent native to the Canary Islands. This species is recognized for its distinctive rosette form and its ability to thrive in arid conditions, making it a popular choice for xeriscaping and container gardening. Its botanical name, *Aeonium undulatum*, reflects its genus, *Aeonium*, which is derived from the Greek word "aionios" meaning eternal, alluding to the plant's longevity and resilience, and its specific epithet, *undulatum*, referring to the wavy or undulate margins of its leaves. The Saucer-Plant typically grows as a single, large rosette, though older plants may branch to form multiple rosettes on a woody stem. These rosettes can reach considerable diameters, often exceeding 30 centimeters. The leaves are spatulate to obovate, thick and fleshy, and arranged tightly around the stem. Their color ranges from a bright green to a yellowish-green, and they are characterized by prominent undulate or wavy margins, which can sometimes appear almost ruffled. The surface of the leaves is generally smooth and can be slightly glossy. During its flowering period, which typically occurs in late winter or spring, *Aeonium undulatum* produces a tall, conical inflorescence that emerges from the center of the rosette. This flower stalk bears numerous small, star-shaped flowers, usually yellow or pale yellow in color. After flowering, the rosette that produced the inflorescence will eventually die back, a common characteristic of many monocarpic or facultatively monocarpic succulents, though *Aeonium undulatum* often exhibits facultative monocarpic behavior, meaning it may not die after flowering if conditions are favorable. Native to the Canary Islands, *Aeonium undulatum* is found in arid and semi-arid regions, often growing on rocky slopes and in crevices. It prefers well-drained soil and full sun to partial shade. In cultivation, it requires similar conditions: a gritty, fast-draining potting mix and ample sunlight. While it can tolerate some drought, regular watering during the growing season, allowing the soil to dry out between waterings, will promote healthy growth. It is moderately frost-tolerant but is best protected from prolonged freezing temperatures. The primary significance of *Aeonium undulatum* lies in its ornamental value. Its architectural form and attractive foliage make it a focal point in succulent gardens and containers. Its ability to store water in its succulent leaves is an adaptation to its native dry environment, allowing it to survive periods of low rainfall. This adaptation is a key characteristic of many succulents, enabling them to colonize habitats where other plants cannot survive. The plant's resilience and unique appearance have contributed to its widespread popularity among plant enthusiasts worldwide.