Peace Lily Black Leaves: Soluble Salt Buildup from Bottom Watering

Your peace lily's new leaves turning black and shriveling while older leaves stay healthy = classic soluble salt toxicity from bottom watering.

The Mechanism

• Bottom watering = no leaching of fertilizer/mineral salts
• Salts accumulate in soil → burn roots → black leaf margins/tips
• Peace lilies are EXTREMELY salt-sensitive

Immediate Correction

1. STOP bottom watering immediately
2. Flush soil thoroughly: Take to bathtub, run copious clear water through until draining freely
3. Top-water only: Water until water exits drainage holes (this leaches salts)
4. Empty drain tray 1 hour after watering—NEVER let sit in water
5. Wait until top inch dry before next watering
6. NO fertilizer until new growth is clean

Why This Works

Top-watering with drainage = natural leaching each time. Bottom watering = salt concentration camp for roots.

Recovery Expectation

New leaves emerging after flush should be clean. Existing black leaves won't recover—trim them. With consistent top-watering and leaching, the problem resolves permanently.