Aeonium diplocyclum (Webb ex Bolle) T.H.M. Mes
This succulent is native to the Canary Islands (La Palma, El Hierro, and La Gomera). It grows at elevations from 165 to 5,580 feet (50 to 1,700 m).
Aeonium diplocyclum, also known as Greenovia diplocycla, is an attractive succulent that forms a solitary monocarpic rosette of glaucous pale green leaves. The rosette grows up to 7.2 inches (18 cm) in diameter. Leaves are thick and fleshy, up to 3.2 inches (8 cm) long and up to 2.6 inches (6.5 cm) wide. The inner leaves are erect and tightly closed during the summer dormancy when the rosette closes cup-like, covered with dry beige-red leaf sheaths. Flowers are deep yellow, star-shaped, 19- to 24-merous, and appear in flat-topped many-flowered clusters on densely leafy, up to 8.8 inches (22 cm) tall stalks in spring.
A. diplocyclum is hardly different from Aeonium aureum. It has larger flowers, and the rosette remains solitary and will never form any offsets.
USDA hardiness zone 9a to 11b: from 20 °F (−6.7 °C) to 50 °F (+10 °C).
How to Grow and Care
Aeoniums do not like hot or dry weather. Therefore, they may go dormant in summer and do not require any water except in very dry conditions. In extreme heat, their leaves will curl to prevent excessive water loss. Growing them in moist shade will keep them growing, but their true growth season is winter to spring, when temperatures are cool (65–75˚F / 18–24˚C) and damp. In the winter, water whenever the soil has dried out. Test by poking your finger down into the soil an inch or two. Too much moisture or allowing them to sit in wet soil will cause root rot.
A sandy loam or regular potting mix is better than a mix specifically for cacti and succulents since Aeonium needs moisture. If you are growing them in containers, repot them every 2 to 3 years with fresh potting soil.
See more at How to Grow and Care for Aeonium.
Propagate Aeoniums by stem cuttings, except for unbranched species, which die after flowering and are propagated from seed. Take cuttings when the plant is actively growing, usually in fall in USDA zones 9 through 11. Aeoniums go dormant in summer. Cuttings taken while plants are dormant do not root. Each leaf rosette dies after it blooms.
See more at How to Propagate Aeonium.
- Back to genus Aeonium
- Succupedia: Browse succulents by Scientific Name, Common Name, Genus, Family, USDA Hardiness Zone, Origin, or cacti by Genus
Click on a photo to see a larger version.