Why Are My Calathea Leaves Curling? Causes and Fixes
Quick answer: Calathea leaves often curl when the plant is losing moisture faster than the roots can replace it. Dry soil and low humidity are common causes, but cold drafts, harsh light, and damaged roots can create similar symptoms.
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Helpful tools for curling Calathea leaves
- Govee H5179 Wi-Fi Thermometer/Hygrometer (paid link)
- Levoit Classic 300S Smart Humidifier (paid link)
- XLUX T10 Soil Moisture Meter (paid link)
Dry soil
Check below the surface. If the root zone is too dry, water thoroughly and let excess drain.
Low humidity
Very dry air can cause curling and crispy margins. A hygrometer gives you an actual reading instead of relying on feel.
Cold drafts or temperature swings
Keep Calatheas away from cold windows, HVAC blasts, and sudden temperature changes.
Too much direct sun
Strong direct light can stress or scorch leaves. Bright indirect light is usually more appropriate.
Root stress
If the leaves curl while the soil is wet, inspect drainage and root condition rather than adding more water.
FAQ
Do Calathea leaves curl at night?
Prayer-plant relatives naturally move their leaves with the day-night cycle, but tight persistent curling can indicate stress.
Also see Calathea Brown Edges.