Plant Problem Lab
Monstera profile

Plant + symptom guide

Monstera root rot

Root rot is more likely when decline comes with wet soil, sour smell, mushy roots, soft stems, or a sealed pot. It is worth checking carefully before repotting.

For monstera, adjust the diagnosis around this plant profile: Monsteras usually need bright indirect light, an airy mix, and careful watering. Yellow leaves often come from wet soil, low light, dense mix, or pests on new growth.

Most likely causes

overwateringno drainagedense soillow light plus slow dryingoverwatering or slow-drying soillow light slowing growth and water use

How to confirm it

Smell the soil and look for sour or swampy odor.

Slide the root ball out only if decline is severe or the pot has no drainage.

Check for brown, mushy roots versus firm pale roots.

Check whether the mix is chunky or compacted around the roots.

Inspect unfurling leaves and undersides for thrips or mites.

Next steps for Monstera

  1. Step 1

    Isolate the plant if rot is severe or pests are also present.

  2. Step 2

    Trim dead roots and repot into a faster-draining mix if roots are mushy.

  3. Step 3

    Do not fertilize while roots are recovering.

Recommended reading

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Overwatered Plant Signs

An overwatered plant often looks thirsty. Wet soil, yellow lower leaves, drooping, fungus gnats, and soft stems are stronger clues than one symptom alone.

Read the guide