Ceratozamia kuesteriana (Horncone)


Botanical Information

FamilyZamiaceae
GenusCeratozamia
Specieskuesteriana
CategoryTropicals, Woody
TypeShrub (evergreen)
OriginNative to Mexico.

Details

USDA Hardiness Zone9b-11
USDA Hardiness Ref.
Canadian Hardiness ZoneRequires cold season protection under glass.
Canada Hardiness Ref.
RHS Hardiness ZoneH3 - H1c
RHS Hardiness Ref.
Temperature (°C) -3.8 °C above 4.5
Temperature (°F)25 °F above 40
Height0.6-1.0 m
Spread0.6-1.2 m
GrowthMedium

Description and Growing Information

General DescriptionThe narrow leaflets and smooth petioles separate this species from similar species in the genus.
ID CharacteristicA small Cycad, with a round trunk, and leaves to about 150 cm long. New leaves emerge bronze. It has smooth petioles, and very narrow leaflets.
PropagationBy seed.
CultivationGrows in partial to full shade. It grows best in moist to well-drained soil but is tolerant of some drought.
Notable SpecimensBok Tower Gardens, Lake Wales, Florida, United States of America.
HabitatPine-oak dominated cloud forests on steep slopes in deep soil mixed with limestone rocks.
Bark/Stem DescriptionThick and corky bark.
Leaf DescriptionLeaves have spines or sharp edges, dark green, semigloss, 80-150 cm long, flat (not keeled) in section, with 60-100 leaflets.
Flower DescriptionPollen cones brown, narrowly ovoid-cylindrical to fusiform-cylindrical, 9-15 cm long, 2.5-3 cm diameter.
Fruit DescriptionSeed cones green, ovoid-cylindrical, 13.5-19.5 cm long, 6.5-8 cm diameter. Seed is poisonous if ingested.

Photographs