Managing Scale on Sago Palms After Frond Removal

Background

A sago palm was heavily infested with white scale. Last November, all fronds were cut back. The owner wants to know if new fronds will emerge and how to prevent scale from returning.

Will New Fronds Grow?

Yes—if the plant is otherwise healthy and in a suitable location, new fronds should appear from the growing point (the crown). The removal of old, infested fronds actually helps by eliminating the bulk of the scale population.

Preventing Re‑infestation

• Systemic soil drench: Bayer Advanced Garden Tree & Shrub Insecticide (blue bottle, active ingredient imidacloprid) applied to the soil provides months of protection. Mix according to label directions.
• Horticultural oils: These smother scale insects on contact. Check with your local garden center for the best product for your area.

Note: Dead scale bodies often remain stuck on the plant. Monitor for new scale appearing on fresh growth rather than waiting for old shells to fall off.

Ongoing Vigilance

Inspect the undersides of new fronds regularly. Early detection makes control much easier.