Daily movement
Calathea leaves naturally change angle between day and night, but they should not remain tightly curled.
Symptoms on popular plants
Calathea leaves curl with drought, hot dry air, cold exposure or light that is too intense.
Calathea leaves naturally change angle between day and night, but they should not remain tightly curled.
A dry root ball curls leaves, but damaged wet roots can produce the same symptom.
A heater, cold glass or harsh sun can trigger a rapid leaf response.
More useful detail
Curling after drought that eases following proper watering supports thirst more than a root ball that remains wet.
Natural evening movement is not a problem when leaves reopen by day and their margins stay healthy.
Problem
Compare leaf position in the morning and evening.
Check moisture throughout the root ball and the distance from heaters, glass and direct sun.
Adjust one factor and observe the response for several days.
Observation
Do not add water to a persistently wet pot simply because the leaves are curled.
Prepared by Florli. Reviewed October 15, 2026. This is general guidance. Sources are listed with each guide, and every decision should reflect the species, location, weather and the plant’s current condition. How Florli creates its guides.