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Giant Dioon

Dioon Spinulosum

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Overview

The Giant Dioon (Dioon spinulosum), a slow-growing cycad, is a focal point for xeriscapes. Mature size reaches up to 15 feet tall, with feathery fronds extending 6 feet. Preferring full sun to partial shade, it thrives in USDA zones 9-11. Once established, it's drought-tolerant, requiring minimal water. Its textured, blue-green leaves add architectural interest. Plant with caution, as its leaves are sharp and it's toxic if ingested.

Sun HalfWater MediumZones 9–11Type PalmClimate Subtropical
Giant Dioon (Dioon Spinulosum) — an impressive species of cycad native to Eastern Mexico
Giant Dioon (Dioon Spinulosum) — Mature size reaches up to 15 feet tall, with feathery fronds extending 6 feet; from this trunk extends an array of stiffGiant Dioon (Dioon Spinulosum) — Once established, it's drought-tolerant, requiring minimal waterGiant Dioon (Dioon Spinulosum) — is an ancient plant type that provides a distinctive prehistoric character to any landscape; this ornamental, image 74Giant Dioon (Dioon Spinulosum) — Preferring full sun to partial shade, it thrives in USDA zones 9-11; but should be protected from frostGiant Dioon (Dioon Spinulosum) — This ornamental perennial is renowned for its robustGiant Dioon (Dioon Spinulosum) — These leaves form a rosette pattern creating a symmetrical and architectural silhouette; palm for half, image 79+72

Culture

Sun
Half
Water
Medium
USDA zones
9–11

Shape & size

Mature height
4–12 Ft.
Mature width
4–12 Ft.

Classification

Type
Palm
Family
Zamiaceae
Climate
Subtropical

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Photos (79)

Giant Dioon (Dioon Spinulosum) — an impressive species of cycad native to Eastern Mexico
Giant Dioon (Dioon Spinulosum) — Mature size reaches up to 15 feet tall, with feathery fronds extending 6 feet; from this trunk extends an array of stiff
Giant Dioon (Dioon Spinulosum) — Once established, it's drought-tolerant, requiring minimal water
Giant Dioon (Dioon Spinulosum) — is an ancient plant type that provides a distinctive prehistoric character to any landscape; this ornamental, image 74
Giant Dioon (Dioon Spinulosum) — Preferring full sun to partial shade, it thrives in USDA zones 9-11; but should be protected from frost
Giant Dioon (Dioon Spinulosum) — This ornamental perennial is renowned for its robust
Giant Dioon (Dioon Spinulosum) — These leaves form a rosette pattern creating a symmetrical and architectural silhouette; palm for half, image 79
Giant Dioon (Dioon Spinulosum) — this cycad prefers full to partial sun exposure and requires well-drained soil for optimal health; though patience, image 59
Giant Dioon (Dioon Spinulosum) — Mature size reaches up to 15 feet tall, with feathery fronds extending 6 feet
Giant Dioon (Dioon Spinulosum) — but should be protected from frost; these leaves form a rosette pattern creating a symmetrical and architectural, image 62
Giant Dioon (Dioon Spinulosum) — palm for half; this conversation-starter requires minimal maintenance
Giant Dioon (Dioon Spinulosum) — From this trunk extends an array of stiff; is an ancient plant type that provides a distinctive prehistoric, image 55
Giant Dioon (Dioon Spinulosum) — an impressive species of cycad native to Eastern Mexico; mature size reaches up to 15 feet tall, with feathery, image 73
Giant Dioon (Dioon Spinulosum) — though patience is necessary to appreciate its full grandeur.<br><br>Thriving in USDA hardiness zones 9 to 11; an, image 58
Giant Dioon (Dioon Spinulosum) — palm-like appearance and can reach a height of 12 to 15 feet with a similar canopy spread; the Giant Dioon (Dioon, image 76
Giant Dioon (Dioon Spinulosum) — owing to its prehistoric adaptations
Giant Dioon (Dioon Spinulosum) — It has excellent drought tolerance once established
Giant Dioon (Dioon Spinulosum) — Its textured, blue-green leaves add architectural interest; palm-like appearance and can reach a height of 12 to 15 feet with
Giant Dioon (Dioon Spinulosum) — Plant with caution, as its leaves are sharp and it's toxic if ingested; owing to its prehistoric adaptations, image 72
Giant Dioon (Dioon Spinulosum) — Plant with caution, as its leaves are sharp and it's toxic if ingested; owing to its prehistoric adaptations, image 50
Giant Dioon (Dioon Spinulosum) — These leaves form a rosette pattern creating a symmetrical and architectural silhouette
Giant Dioon (Dioon Spinulosum) — Mature size reaches up to 15 feet tall, with feathery fronds extending 6 feet; from this trunk extends an array of, image 46
Giant Dioon (Dioon Spinulosum) — This ornamental perennial is renowned for its robust; it has excellent drought tolerance once established, image 75
Giant Dioon (Dioon Spinulosum) — Its textured, blue-green leaves add architectural interest; palm-like appearance and can reach a height of 12 to, image 49
Photographs by 7 contributors

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