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How to Treat Root Rot in Monstera?

Hank Schrader
2025-04-14 19:03:39

1. Understanding Root Rot in Monstera

Root rot is a common issue in Monstera plants, caused primarily by overwatering or poor drainage. From the plant's perspective, excessive moisture suffocates the roots, depriving them of oxygen and creating an ideal environment for harmful fungi like Pythium or Phytophthora. The roots turn mushy, brown, or black, and the plant struggles to absorb nutrients, leading to yellowing leaves, stunted growth, and eventual collapse if untreated.

2. Identifying Symptoms of Root Rot

Monstera plants exhibit several signs when suffering from root rot:

  • Yellowing or wilting leaves: Despite adequate light, leaves may droop or turn yellow due to nutrient deficiency.
  • Foul-smelling soil: A musty odor indicates decaying roots.
  • Soft, discolored roots: Healthy roots are firm and white, while rotten roots are brown or black and slimy.
  • Stunted growth: The plant may stop growing as its root system fails.
Early detection is critical to saving the plant.

3. Immediate Steps to Treat Root Rot

Step 1: Remove the Plant from Its Pot Gently lift the Monstera and shake off excess soil to inspect the roots.

Step 2: Trim Affected Roots Using sterilized scissors, cut away all soft, discolored roots. Healthy roots should remain intact.

Step 3: Disinfect the Root System Soak the remaining roots in a diluted hydrogen peroxide solution (1 part peroxide to 3 parts water) or a fungicide to kill lingering pathogens.

Step 4: Repot in Fresh Soil Use a well-draining potting mix (e.g., a blend of peat, perlite, and orchid bark) and a pot with drainage holes to prevent future waterlogging.

4. Adjusting Care Practices to Prevent Recurrence

Watering: Allow the top 2-3 inches of soil to dry before watering. Monsteras prefer slightly moist but not soggy conditions.

Light and Humidity: Provide bright, indirect light and moderate humidity to support recovery. Avoid direct sunlight, which can stress the plant further.

Fertilization: Hold off on fertilizing until the plant shows new growth, as damaged roots cannot absorb nutrients efficiently.

5. Monitoring Recovery and Long-Term Health

After repotting, monitor the Monstera closely:

  • New growth indicates successful recovery.
  • If symptoms persist, reevaluate drainage or consider a soil drench with a fungicide.
  • Ensure proper airflow around the plant to discourage fungal growth.
Patience is key, as recovery may take weeks to months.

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