Sago Palm Yellowing Fronds: Nutrients, Scale, or Mites

Sago palm (cycad) fronds turn rusty/yellow partially. Owner asks about fertilizer, soil, pests.

Diagnostic Steps

Uniform yellow: Nutritional/soil issue—get free soil test from county Extension.
Scale: Raised 1-2mm bumps on frond undersides.
Mites: Fine webbing; tap fronds over white paper—yellowish-orange crawlers visible.
Tool: 10x hand lens/jeweler's loupe for close inspection.

Fertilizer Recommendation

Any good palm fertilizer or ornamental 8-8-8 / 16-4-8. Check local nursery for area-specific formulation.