Cycas revoluta (Sago Palm) Care and Identification

Your Ancient Cycad: Not a Palm, Not a Sago

Your 40+ year old "sago palm" (narrow, stiff, vicious fronds; 4–6" caudex) is Cycas revoluta — a gymnosperm, not a palm. The "Mexican variety" notion is likely confusion with Dioon or Ceratozamia (true Mexican cycads). C. revoluta is Japanese.

Current Symptoms: Pale Fronds

Likely causes: nutrient deficiency (Mg, Mn, N) or light change stress (recent move). The "pineapple" (caudex) stores energy—new flush will reveal if roots functional.

Evidence-Based Care (Not "Atomic Grow")

1. Light: Bright indirect to morning sun. Your "azalea shade" was correct.
2. Water: Dry 2–3" deep → thorough soak → drain completely. Winter: monthly.
3. Soil: 50% pumice/perlite, 50% organic. Repot only when rootbound (3–5 yrs).
4. Fertilizer: 18-6-18 water-soluble at 1 tsp/gal monthly (spring–fall). Or slow-release 14-14-14.
5. Micros: Epsom salt (Mg) + manganese sulfate annually prevents frizzle top.

Pup Propagation

Remove pups in spring with clean cut. Dust with sulfur. Root in pure pumice/perlite, high humidity, bottom heat. 6–12 months.

Safety

All parts toxic (cycasin). Gloves, wash hands. Pets/children at risk.

Your Plant's Value

40-year specimen caudex = significant horticultural asset. Prioritize evidence-based care over untested products.