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Pothos (Epipremnum) Mealybugs and Fungus Gnats: Overwatering Root Cause

Two Pests, One Cause

  • Mealybugs: White powder (cottony wax). May have come with plant.
  • Fungus gnats: Tiny flies from constantly wet soil (overwatering).

Fix Both

  1. Repot in fresh, well-draining mix (add perlite). Pot MUST have drainage.
  2. Water only when dry + pot feels light (every 10–14 days).
  3. Bright light (more sun = more variegation, healthier).
  4. Never leave saucer full.
  5. Treat mealybugs: alcohol-soap spray twice weekly × 4 weeks.

Prevention

  • Inspect before buying.
  • Quarantine 2 weeks.
  • Water on schedule, not calendar.
  • Open blinds daily.

Your watering habit (weekly) was the problem. Fix that, and pests vanish.

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