Dioon spinulosum has pinnate leaves that grow to about 5-7 ft (1.5-2.1 m) in length and radiate out from the trunk. The 120-240 leaflets on each leaf are small and flat, have small thorns and taper to a sharp point.
Giant Dioon work very well as ornamental in gardens in appropriate zones (Hardiness Zones: 9b-11). The growth rate allows for saplings to quickly mature onto decently sized plants, and they grow in easily predictable forms.
Similar plants: