Dioon spinulosum 3
Dioon spinulosum 3

Dioon spinulosum
(Giant Dioon)
(Spiny Dioon)
USDA Zone: 10B - 11
Find your hardiness zone
Origin: Mexico
Type: Evergreen Shrub, Cycad

Typical Height: 6’-12’
(1.8–3.6 mts)
Typical Spread: 6’
(1.8 mts)

Growth: Slow
Drought Tolerance: High   
Salt Tolerance: Moderate
Wind Tolerance: N/A
Foliage Color: Dark Green
Flower Color: N/A
Flowering Season: Summer
Flower Feature: Cone
Light Needs: Medium - High
Nutritional Needs: Medium
Human Hazards: Spiny; Seed is poisonous if ingested
Family: Zamiaceae
Propagation: Seeds
Leaf Type: Pinnately compound
Texture: Medium
Environmental Issues: None

Typical sizes at the nursery:
3G (2’-3’OA)
7G (3’-4’OA)
15G (4’-6’OA)
25G (6’-8’OA)

Typical planting distance:
8’ OC
(2.4 mts)

Common Uses: Accent; rock gardens; sand gardens; shrub
Category: Accents

Notes: Spiny leaves in a stiff rosette. Old plants have trunks up to 20' or more

+ In this Photo:
Dioon spinulosum
(Giant Dioon)
Close-Up

All sizes are approximates
Photo taken by:
All Landscape Data, Inc.
July 2016
Key West
Florida USA

Sources:
Betrock’s
Reference Guide to
Florida Landscape Plants

Landscape Plants for South Florida
A manual for gardeners, landscapers and homeowners.

Betrock’s
Plant Finder

Internet Sources:
http://www.cycadpalm.com/dioon-spinulosum.html

http://davesgarden.com/guides/pf/go/59126/

http://www.floridata.com/ref/d/dioo_spi.cfm