Sago Palm New Growth Browning & Frizzled? Check for Scale & Nutrients

Four of six sago palms are healthy; two show brown, frizzled new growth. They're only 5 feet apart. The owner wonders if magnesium sulfate (for frizzle top) is needed.

Frizzle Top vs. Scale

Frizzle top (nutrient deficiency) is common in other palms, but sagos often suffer from cycad aulacaspis scale—a white, dusty coating on frond undersides. This scale causes yellowing, browning, and stunted new growth.

Diagnosis Steps

• Inspect frond undersides for white, powdery scale.
• If present, treat with horticultural oil + systemic drench (Bayer Advanced).
• If no scale, apply magnesium sulfate and a balanced palm fertilizer with micronutrients.

Why Proximity Doesn't Guarantee Uniform Health

Scale infestations can be localized. Soil conditions, drainage, and microclimate vary even over short distances. Treat affected plants individually.