If your plant is wilting even though the soil is wet, or growth has slowed with yellowing leaves, root rot may be the cause.
Overview
Root rot is a soil-based plant disease
It damages roots and prevents water uptake
It is most often caused by overwatering or poor drainage
Common Signs
Wilting despite moist or wet soil
Yellowing leaves and slow growth
Roots appear brown, mushy, or soft when inspected
Often Confused With
Drought stress
→ dry soil, improves after watering
Wilt diseases
→ internal blockage, not caused by wet soil
Root rot occurs in wet conditions and affects roots directly
Plants Commonly Affected
Container plants
Houseplants
Vegetables in poorly drained soil
Herbs and seedlings
Occurrence
Most common in overwatered soil
Worse in containers without good drainage
More likely in cool, wet conditions
Fast Control (Start Here)
Stop watering immediately
Check roots and remove damaged portions
Rinse roots with dilute hydrogen peroxide (see note below)
Improve drainage
Repot or replant if needed
Note: Optional Support: Diluted Hydrogen Peroxide
Start with 3% hydrogen peroxide – then dilute
Never apply undiluted
Dilute per instructions below.
Mild support (general use):
1 part peroxide: 10 parts water
Root rot support (one-time use):
1 part peroxide: 2–4 parts water
Hydrogen Peroxide does not cure root rot
Always remove damaged roots and improve drainage
Which Treatment Should You Use?
For early signs
→ Let soil dry and improve drainage
For moderate damage
→ Trim affected roots, rinse and repot
For severe damage
→ Replace plant
Do not rely on treatments alone
Instructions
Immediate Action
Stop watering (temporarily)
Gently remove plant from soil
Inspect and trim soft, brown roots
Rinse once with diluted hydrogen peroxide
Repot/replant in (clean pot – new soil)
Environmental Control
Use well-draining soil
Ensure pots have drainage holes
Avoid letting plants sit in water
Prevention
Water only when soil begins to dry
Use well-draining soil mixes
Use pots with drainage holes
Avoid overwatering
Do not let roots sit in standing water
When to Remove Plants
Mild infection
Trim roots and repot
Monitor closely
Severe infection
If most roots are affected, remove the plant
If You Pull Plants: Compost or Trash?
Do not compost diseased roots
Discard in trash
Can You Plant Again in the Same Space?
Yes, with caution
Replace or refresh soil
Ensure proper drainage before replanting
Gardener’s Notes
Root rot is often caused by care conditions, not just pathogens
Overwatering is the most common trigger
Prevention is easier than recovery
Key Takeaway
Water less often
Improve drainage
Check roots early
Healthy soil prevents problems
