Sago Palm Scale in Maryland: Asian Scale Identification and Reality Check

Symptoms

Lori's sago palms (Maryland, overwintered in workshop): tiny brown dots under fronds (lower edges), fronds appear dying.

Diagnosis: Asian Scale

Same epidemic as Florida (Articles 2526, 2533) — Aulacaspis yasumatsui.

Management Reality

• Extremely persistent, armor-protected
• Dormant rebound after treatment stops
• Consistent pesticides may suppress
• Complete eradication unlikely
• "Watch out... this palm is one you have to watch a lot"

Additional Notes

• Twisting leaves likely not a problem
• "Cover roots but do not go above that" — unclear application note
• Indoor overwintering doesn't eliminate scale

Long-Term Perspective

In non-tropical regions, scale may be less aggressive but still persistent. Consider whether maintenance effort justifies keeping plant.