Treating Frizzle Top on Sago Palms: Manganese Sulfate and Fertilization Schedule

Brown New Growth = Manganese Deficiency

"Frizzle top" on sago palms in Florida is almost always a manganese shortage.

Fertilize 3× per year with a complete palm fertilizer (contains Mn, Mg, Fe, etc.).
Spray monthly with manganese sulfate solution (1 tsp per gallon water) on the crown and new spears.
Monitor for white scale (cycad scale) on frond undersides; treat with horticultural oil if found.

New growth should emerge green and healthy within a few cycles.

Tropical Plants: Sago Palm Female Cone: Healthy and Normal; Sago Palm No New Growth: Cone Production or Pot-Bound; Propagating Sago Palm (Cycas revoluta) from Basal Offsets; Leyland Cypress Browning After Freeze: What to Do; Sarracenia Flava New Pitcher Brown Spot: Slug Damage or Fungus?; Ponytail Palm (Beaucarnea) Brown Tips: Remove Glued Stones, Water Right; Dracaena Marginata Leaf Browning: Light and Watering Adjustments; Sago Palm Yellowing: Either Over- or Underwatering—Balance Is Critical, Pray for Recovery; Sago Palm Transplant Shock: Patience Required; Reviving Container Sago Palms with Fresh Soil

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