Can a plant come back from root rot?

Yes, if you catch it early. Trim away all the mushy brown roots, repot in fresh well-draining soil, and water sparingly. As long as some firm healthy roots remain, recovery is likely.

What does root rot smell and look like?

Rotted roots are brown or black, soft and mushy, and often slimy with a sour, swampy smell. Healthy roots by contrast are firm and white or tan.

Should I use a fungicide on root rot?

The priority is removing all rotted tissue and fixing drainage and watering. A fungicide can help in severe cases, but it won't work if the soggy conditions that caused the rot remain.

How to Save a Plant With Root Rot

Root rot happens when roots sit in waterlogged, oxygen-starved soil and begin to die and decay, often accelerated by fungal pathogens. Left unchecked, the rot spreads upward into the stem and kills the plant. The signs are mushy brown roots, a sour smell, yellowing leaves, and a plant that wilts despite wet soil.

The only real fix is surgical: remove the plant, cut away every rotted root, and repot into clean, fast-draining soil. Done early, this rescue has a high success rate. Done late, you may still save a cutting even if the parent is lost.

Step by step

1
Unpot and rinse the roots
Remove the plant and gently wash all soil off the roots under lukewarm water. Clean roots let you see exactly which are healthy and which are rotted.
2
Identify the rot
Healthy roots are firm and white or tan. Rotted roots are brown or black, mushy, slimy, and may smell sour. Anything that falls apart between your fingers is dead.
3
Cut away all rotted roots
Using clean, sharp scissors sterilized with rubbing alcohol, trim off every mushy root back to firm, healthy tissue. It's better to remove too much than to leave rot behind.
4
Disinfect and trim foliage
Sterilize your scissors between cuts. If you removed a large share of the roots, trim back some leaves too so the reduced root system isn't overwhelmed trying to support all the foliage.
5
Repot in fresh, sterile mix
Discard the old soil completely and wash the pot, or use a new one with drainage holes. Plant into fresh, airy, well-draining mix with perlite or bark — never reuse the contaminated soil.
6
Water sparingly while it recovers
Water lightly and only when the top inch is dry. The smaller root system needs less water, and keeping the soil too wet again would restart the rot.

What causes root rot

Root rot is almost always a drainage and watering problem. Pots without drainage holes, dense soil that stays soggy, oversized pots that hold too much water, and watering too frequently all create the airless, wet conditions where roots suffocate and fungal pathogens thrive.

Cold temperatures make it worse because plants drink less, so soil stays wet longer. This is why overwatering is especially risky in winter and in low-light spots where the plant's water use is low.

Preventing a recurrence

After a root rot rescue, the most important changes are better drainage and more disciplined watering. Always use a pot with drainage holes, choose a fast-draining mix, and check soil moisture before every watering rather than watering on a schedule.

Match the pot size to the root ball; a pot that's too big stays wet long after watering. Terracotta pots can help because they breathe and dry the soil faster than plastic or glazed ceramic.

Quick tips

Sterilize scissors with rubbing alcohol between cuts so you don't spread the pathogen.
Never reuse the old soil — it harbors the fungus that caused the rot.
If the parent plant is too far gone, take a healthy cutting and propagate it as backup.