Indoor Paradise Palm Decline: Soil Salt Buildup

Diagnosis

A 2-meter indoor paradise palm (likely Howea or Chamaedorea) shows brown lower leaves with spots, mildew-smelling soil, and white surface residue after 2 years.

Cause

Salt accumulation from years of fertilizing in the same soil. The white residue is mineral salts; the smell indicates anaerobic conditions from poor drainage.

Solution

1. Repot into a larger container.
2. Add 2 inches of gravel at bottom for drainage.
3. Use fresh, high-quality potting mix.
4. Water thoroughly after repotting.

Maintenance

Repot or refresh soil every 1–2 years. Leach salts by watering until runoff 2–3× per year.