Plant Problem Lab
Calathea profile

Plant + symptom guide

Calathea curling leaves

Curling leaves often mean the plant is trying to reduce water loss or protect damaged tissue. Soil moisture, heat, pests, and humidity all matter.

For calathea, adjust the diagnosis around this plant profile: Calatheas curl and brown from dry soil, low humidity, mineral-sensitive water, heat, cold, or pests. They prefer steadier moisture than many common houseplants.

Most likely causes

dry soil stress or inconsistent wateringdry air, mineral buildup, or moisture swingspest pressuredry soillow humidity or heatpests

How to confirm it

Check whether leaves relax after watering or stay curled.

Inspect undersides for mites, thrips, or sticky residue.

Look for heat, direct sun, or vent exposure.

Check whether leaves curl during the day and relax later.

Inspect undersides for mites before blaming humidity alone.

Next steps for Calathea

  1. Step 1

    Correct soil moisture first, then adjust placement.

  2. Step 2

    Isolate and inspect if curling appears on new growth.

  3. Step 3

    Avoid misting leaves in direct sun or cold drafts.

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