Aeonium undulatum is an evergreen, succulent subshrub and it is one of the larger species of Aeonium with somewhat metallic-green wavy up to 25 cm long spoon-shaped leaves that form large rosettes on stout-stems often over a 1 m from the ground. Other rosettes do not branch off this stem (normally) but grow from the bottom, unlike most Aeoniums. The blooms are a dark yellow in a terminal cluster rising up to 50 cm above the foliage, usually in summer. The plant is monocarpic so the flowering stem will die when it flowers which is normally after about five years.
Scientific Name: Aeonium undulatum Webb & Berthel.
Synonyms: Aeonium youngianum
Common Names: Stalked Aeonium
How to grow and maintain Aeonium undulatum (Stalked Aeonium):
It thrives best in full sunlight to part sunlight in a sheltered spot, but the bright light enhances the rich hues of the darker Aeoniums.
It grows well in humus-rich, moist but well-drained, any good potting mix soil.
It prefers ideal temperatures of 65ºF – 75ºF / 18ºC – 24ºC and no lower than 50ºF / 10ºC.
Water moderately but consistently during the growing season, Keep the soil moist but not soggy. Allow the top one inch of soil to dry out between waterings. During the winter reduce watering to a minimum.
Fertilize your plant once every 2 weeks during the active growth period with a balanced liquid fertilizer diluted by half. Do not feed while dormant.
It can be easily propagated by seed or by stem cuttings. Sow seed at 19-24ºC in spring. Take cuttings of rosettes in the spring and kept at 18ºC and barely moist until rooted.
Pests and Diseases:
It has no serious pest or disease problems. Slugs can do some damage and the occasional bird may take a bite.