Sago Palm Yellow Fronds? (Important: It's Not Actually a Palm)

The Sago Palm (Cycas revoluta) is actually a cycad — an ancient plant with care needs different from true palms. Yellow fronds usually mean specific things.

Common Yellow-Frond Causes

  • Natural aging: Older fronds yellow and die from the bottom up. Cut at the base.
  • Manganese deficiency: New fronds emerge yellow. Add slow-release palm fertilizer with micronutrients.
  • Overwatering: Multiple fronds yellow at once. Drastically reduce watering.
  • Cold damage: Below 50°F damages fronds. Move away from cold windows.

Watering Sagos

Sagos are drought-tolerant cycads. Water every 2–3 weeks in summer, every 4–6 weeks in winter. Soil should dry completely between waterings. Sagos rot fast from overwatering — when in doubt, wait.

Critical Warning: Toxicity

Sago palms are EXTREMELY toxic to pets — even a single seed can be fatal to dogs. If you have pets, do not buy this plant. Cycad poisoning has no antidote.

Frequently asked questions

Should I cut all the yellow fronds off?

Yes — cut fully yellow fronds at the base. Don't cut partially green ones; they still photosynthesize. Sterilize pruners between cuts.

Why does my sago grow so slowly?

Sagos grow only 2–6 inches per year. They're ancient plants, evolved for slow steady growth. This is normal, not a problem.

Sources and references

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