Dioon spinulosum

Origin: Mexico.
Dioon spinulosum, giant dioon, or gum palm, is the largest of the species (till 12 m) and grows on limestone cliffs and rocky hillsides in the tropical rainforests of Veracruz and Oaxaca, Mexico, till a elevations to 300 m above sea level.
Dioon spinulosum prefers well-drained soil with regular water.
It will grow in soils containing few nutrients, in soils rich in limestone, and on slopes.
It has pinnate leaves that grow to about 1.5-2.1 m in length.
Fast growing and very attractive!
Not frost tolerant.