Lucky Bamboo Gnat Infestation: Root Rot is the Real Problem

Why Lucky Bamboo Gets Fungus Gnats

Lucky bamboo (Dracaena sanderiana) in soil should never be kept constantly wet. The gnats are breeding in rotting roots caused by waterlogged soil.

Rescue Procedure

1. Remove from pot and gently wash all soil off roots.
2. Inspect roots: Healthy = firm, white/cream. Rotten = brown/black, mushy, foul smell.
3. Cut away all rot with sterile scissors. If extensive, let cuts air-dry 2–3 days to callus.
4. Repot in well-draining mix: 1 part potting soil : 1 part perlite/sand. Pot must have drainage.
5. Water sparingly: Only when top 2 inches of soil are dry. Empty saucer promptly.

Critical Distinction: Soil vs. Water Culture

• In soil: Needs wet/dry cycles like any houseplant. Constant moisture rots roots.
• In water only: Roots adapt to aquatic life; change water weekly, use distilled water.

Your plant was in soil but treated like a water plant – hence the rot.

Recovery Signs

• Existing foliage may yellow and drop – this is normal.
• If canes remain firm and green, new shoots will emerge from nodes within weeks.
• Gnats disappear once soil stays dry between waterings.