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Dioon spinulosum, Giant Dioon, Gum Palm
Male cones

Dioon spinulosum

Giant Dioon, Gum Palm
Family: Zamiaceae
Origin: Mexico
Large shrub 5-10 ftSmall tree 10-20 ftFull sunSemi-shadeModerate waterThorny or spinySubtropical, cold hardy at least to 30s F for a short time

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.

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