Cycas Revoluta

Cycas Revoluta (Sago Palm) Specimen Supplier

Cycas revoluta, commonly called the Sago Palm or King Sago, is a slow-growing cycad and one of the most recognized architectural specimens in tropical landscape design. Despite the name, it is not a true palm — it is a gymnosperm in the Cycadaceae family, an ancient lineage that pre-dates true palms by hundreds of millions of years.¹ The species is native to southern Japan, Taiwan, and southern China,² and has been cultivated for centuries in Japanese gardens and modern formal landscapes worldwide.

Trunk Height and Cultivation Time

The reason Cycas revoluta commands premium pricing is time. Trunk extends at roughly 2-5 cm per year,¹ so:

• 2 ft trunk represents approximately 12-25 years of cultivation
• 3 ft trunk represents approximately 18-35 years of cultivation
• 4 ft trunk represents approximately 25-50 years of cultivation

The species reaches a maximum trunk height of 6-7 m in habitat, and that takes 50-100 years.¹ Every foot of trunk on a sale specimen is grower-years of water, fertilizer, scale monitoring, and risk.

Native Range and Hardiness

Per Plants of the World Online (Royal Botanic Gardens, Kew), the species is native to subtropical East Asia: southern Japan (Kyushu, Shikoku, Ryukyu Islands), eastern Taiwan, and southern China (Fujian).² The native range gives it strong salt tolerance and drought tolerance in cultivation, both of which translate directly to Philippine coastal and resort landscape briefs. USDA hardiness 9a-12b spans every Philippine lowland climate.³

Architectural Character

The plant is a single-stem cycad with a stout trunk (approximately 20 cm caliper, thickening with age) topped by a rosette of deep glossy green stiff fronds.³ Fronds run 50-150 cm long, with leaflets that have spine-tipped, revolute (curled-under) edges — the basis for the species name revoluta.

The species is dioecious: male specimens produce a tall pollen cone, female specimens produce a flat dome of orange seeds. Sex cannot be determined until coning maturity (typically 15+ years), which matters for buyers who want fruiting specimens or who do not.

Critical Safety Warning

All parts of Cycas revoluta are highly toxic. Seeds carry the highest concentration of the active compounds — cycasin, methylazoxymethanol (MAM), and the neurotoxin BMAA.^{1 3}

Veterinary toxicology literature reports that 50-75 percent of dogs that ingest Cycas revoluta die even with prompt veterinary treatment.¹ Symptoms include vomiting (often bloody), diarrhea, weakness, seizures, acute liver failure, and neurological damage.

We strongly recommend:

• Avoid placement in residences with dogs that chew plants.
• For HNW residential placements with pets, position out of pet-accessible zones and document the warning in turnover documents.
• For properties with young children, place specimens beyond reach and supervise around any seed drop on female specimens.
• For commercial and institutional landscapes, the toxicity is rarely a placement constraint, but staff should be informed.

This is the same toxicity profile that the ASPCA references in its standard cycad warnings.

Pest Watch: Asian Cycad Scale

Aulacaspis yasumatsui (Asian cycad scale) is a serious global threat to Cycas revoluta and can destroy mature specimens within months if untreated.³ All inbound specimens are screened for white waxy scale deposits along leaflets and trunk surfaces. Prophylactic treatment with horticultural oil or systemic imidacloprid is recommended in regions with local outbreak history.

Landscape Use in the Philippines

Common deployments:

• Formal entrance and courtyard focal points at HNW residential, hotel, and corporate arrivals
• Japanese-inspired and zen garden anchors paired with stone, gravel, and architectural lighting
• Resort and beachfront landscapes capitalizing on the salt and wind tolerance
• Container and urn specimens in hotel lobbies and condominium podium gardens
• Long-term institutional and corporate landscapes where a multi-decade specimen with minimal change profile is the brief

Why Specify Cycas Revoluta

A true long-term landscape asset. Architectural form holds for decades with minimal change. A 4 ft trunk specimen looks essentially the same in five years as on the day of planting.

Salt and drought tolerance. Native subtropical island habitat translates to strong performance at beachfront and on properties with limited irrigation infrastructure.

Pool-safe at landscape scale. Clean glossy fronds, no fruit drop on non-coning specimens, no aggressive root system within 2 m of pool coping.

Recognized horticultural reliability. Royal Horticultural Society Award of Garden Merit confirms predictable performance in cultivation worldwide.¹

Sources