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Tropicals, Woody, Ferns > Ceratozamia > Ceratozamia robusta > Ceratozamia robusta

Ceratozamia robusta


Costilla Deleo'n




Origin:  Mesoamerica.
Family
Zamiaceae
Genus
Ceratozamia
Species
robusta
Category
Tropicals, Woody, Ferns
Type
Shrub (evergreen)
USDA Hardiness Zone
9b - 11
Canadian Hardiness Zone
Requires cold season protection under glass.
RHS Hardiness Zone
H3 - H1c
Temperature (°C)
(-3.8)-4.5
Temperature (°F)
25 - 40
Height
1.2-3.0 m
Spread
3.0-4.7 m
Photographs
Description and Growing Information
Flowering Period
General Description
Long-lived subtropical to tropical plant.
Landscape
Temperate gardens as a potted plant where it is grown indoors during the winter months. In more tropical climates it is frequently grown as either a specimen or grouped as a landscape plant.
Cultivation
Grows best in shady areas, but will tolerate full sun. In full sun the leaves may turn yellow. It grows best in moist to well-drained soil. Tolerant to some drought.
Growth
Fast
ID Characteristic
A crown of shiny, arching, palm-like leaves sprout atop a shaggy upright trunk.
Habitat
Rocky areas (eg. inland cliffs, mountain peaks), and forest.
Bark/Stem Description
Woody, underground, height of stems can be up to 1.8 metres.
Flower/Leaf Bud Description
Female cones can be larger than 30 cm. Male cones can exceed 30 cm in length. After being pollinated it takes several months to a year for seeds to become ripe. Ripe seeds generally need another 3-6 months before the embryos are fully developed and ready for planting.
Leaf Description
Leaves are dark green upright and up to 2 m in length. Leaves have thorns at the basal of the petiole.
Flower Description
Male and female flowers found on separate plants.
Fruit Description
Female cones are grey in colour, ovoid-cylindrical, formed around the apex of the stem and turning brown at maturity, male cones are terminal.
Notable Specimens
Bok Tower Gardens, Lake Wales, Florida, United States of America.
References
Gregory, T. & Chemnick, J. 2010. Ceratozamia robusta. The IUCN Red List of Threatened Species 2010: e.T42144A10666149. http://dx.doi.org/10.2305/IUCN.UK.2010-3.RLTS.T42144A10666149.en. Downloaded on 08 May 2019.
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