Sago Palm Asian Scale: Persistent Pest Requiring Vigilant Management

Regional Epidemic

Lesley asks about white scale on sago palms. Kathy reports: Asian scale (Aulacaspis yasumatsui) spreading through central/south Florida.

Infestation Reality

• New areas: 6 months from first sighting to heavy infestation
• Hard to find uninfested sagos in affected zones
• Extremely persistent — armor-like protection
• Some report control with consistent pesticide treatment
• Others: scale enters dormant "armored" state, rebounds after treatment stops

Management Reality

• No easy eradication
• Requires ongoing monitoring and treatment
• "Cover roots but do not go above that" — unclear note, possibly referring to soil drench application zone
• High-maintenance plant in scale-affected regions

Considerations

In heavily infested areas, sago palms become high-maintenance landscape choices. Replacement with scale-resistant alternatives may be more practical long-term.