Aeonium glandulosum (Aiton) Webb & Berthel.
Disc Houseleek, Saucer Plant
Aeonium meyerheimii, Sempervivum glandulosum, Sempervivum meyerheimii, Sempervivum patina
This species is endemic to the Portuguese archipelago of Madeira (the islands of Madeira, Porto Santo, and Desertas). It grows on sea cliffs on northern shores or rocky peaks from sea level up to 4,920 feet (1,500 m).
Aeonium glandulosum is a biennial to short-lived perennial succulent with a stout, very short stem and fleshy leaves arranged in a dense cup-shaped rosette. The rosette grows up to 16 inches (40 cm) in diameter, usually solitary or occasionally producing a few offsets. Leaves are obovate or oblanceolate with margins with bead-shaped cilia, up to 4.4 inches (11 cm) long and 3.2 inches (8 cm) broad. Flowers are daisy-like, 8- to 13-merous, pale yellow, and appear in a loose inflorescence emerging from the center of the rosette in summer. The inflorescence is up to 10 inches (25 cm) long and 16 inches (40 cm) in diameter.
USDA hardiness zones 9b to 11b: from 25 °F (−3.9 °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 arid 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 to 75 °F (18 to 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 2 (2.5 to 5 cm). 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 Aeoniums need some moisture. If you grow them in containers, repot them with fresh potting soil every 2 to 3 years.
Feed during the growing season with a half-strength balanced fertilizer every month or so. Do not feed while dormant.
Learn more at How to Grow and Care for Aeonium.
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