Palm and Sago Fertilization: High Magnesium, Manganese, and Potassium Are Critical

Palms and cycads (sago) need specialized nutrition—standard fertilizers cause deficiencies.

Required Nutrient Profile

• Ratio: 2-1-4 (e.g., 8-4-12, 10-5-15).
• Critical micros: Magnesium ≥3%, Manganese ≥3%, plus Fe, B, Zn.
• Nitrogen form: Slow-release (coated) preferred.

Finding the Right Product

• Check labels—many "palm fertilizers" are reformulated to low quality.
• Rose, orchid, or citrus formulas may match the 2-1-4 + micros profile.
• DIY: 14-6-6 + sulfate of potash (0-0-50) to boost K.

Immediate Fix

Epsom salt (magnesium sulfate) — 1–2 tbsp/plant, watered in.

Schedule

4–6 applications/year. Sago especially sensitive to Mg/Mn deficiency.

Note

Salt-tolerant ferns/orchids not addressed—consult coastal specialist.