Cephalocereus senilis (Haw.) Pfeiff.
Cephalocereus senilis is a succulent tree.
Cephalocereus senilis was already described and the name validly published by Adrian Hardy Haworth. It was Louis Karl Georg Pfeiffer, however, who reclassified it into todays valid botanical systematics in 1838.
The trees are comparatively slow-growing and reach heights of 10 to 12 metres. The plants reach a width of 1.5 to 2 metres.
Wood and Bark
Cephalocereus senilis has whorled leaves. The leaves are acicular.
Flowers and Fruits
Cephalocereus senilis produces solitary pink many-stellate flowers from June to August.
The trees produce berries.
Cephalocereus senilis is native to Central Mexico. It is a protected species according to the Washington Convention.
The trees prefer a sunny situation on dry soil. They tolerate temperatures down to -7Â°C (USDA zone 9).
Suited as indoor plant.
Maintenance and Propagation
The plants usually need very little maintenance.
Cephalocereus senilis is toxic.
Please read the health issues note!
Pests and Diseases
Sudden wilting and pale green discolouration indicate a fungal infection (phytophthora). Remove infected plants. Avoid by improving drainage and over-fertilization.
Scale insects that sit on the undersides of the leaves and excrete honeydew can be controlled with insecticide or biologically with parasitic wasps.
- Walter Erhardt, Erich GÃ¶tz, Nils BÃ¶deker, Siegmund Seybold: Der groÃe Zander. Eugen Ulmer KG, Stuttgart 2008, ISBN 978-3-8001-5406-7. (Ger.)
- Christoper Brickell (Editor-in-chief): RHS A-Z Encyclopedia of Garden Plants. Third edition. Dorling Kindersley, London 2003, ISBN 0-7513-3738-2.