Care of the cycad Dioon edule or Chestnut dioon |
|
The genus Dioon, family Zamiaceae, includes 14 species of cycads native to Central America. Some species are: Dioon edule, Dioon merolae, Dioon mejiae, Dioon spinulosum. Common name: Chestnut dioon. Scientific synonyms: Macrozamia littoralis, Zamia rigida. This species is native to Chiapas and Oaxaca, Mexico. Chestnut dioon is a slow-growing dioecious cycad that reaches 2 metres (6.56 feet) in height. The long leaves, up to 1,6 metres (5.24 feet) long, have leathery, linear-lanceolate leaflets and a deep green colour; the young leaves have spines that are lost with age. The female cones are slightly larger than the male cones. Macrozamia littoralis is used in rockeries, in groups next to walls, as isolated specimens and in large pots for patios and terraces. Dioon edule prefers full sun exposure but also grows well in semi-shade. Although its ideal climate is subtropical, it resists frosts down to -9 ºC (15.8 ºF). Chestnut dioon grows in any soil with excellent drainage. Always water moderately, waiting for the substrate to dry; in summer increase watering. Dioon edule does not need fertiliser. Although pruning is not necessary, dry leaves can be removed at any time. Chestnut dioon does not usually present serious problems with pests and diseases. Zamia rigida propagates from seeds sown in spring (a very slow process) or by separating basal shoots. |
Images of the cycad Dioon edule or Chestnut dioon |
 Dioon edule  Dioon edule  Dioon edule |