What to check first
Observe it at two times of day
Photograph the same leaves in daylight and again in the evening. Normal prayer-plant movement changes leaf position. Persistent rolled edges, dead margins or a leaf that no longer opens are separate observations, so avoid treating ordinary nighttime movement as a problem. [1]
Check the mix before watering
Feel below the surface and lift the pot to compare weight. Calatheas favor moist, well-drained mix rather than waterlogging. A dry root ball and roots left in a wet outer pot need different responses; neither is established by curling alone. [1]
Inspect fine leaf markings
Look under leaves and near their bases for pale speckling, fine webbing or tiny moving pests. Spider mites can be difficult to see and may not leave obvious webs. Save a close photograph before choosing a treatment. [2]
Review air, water and feeding
Check for a heating vent, cold draft or abrupt temperature change. Record the water source and fertilizer frequency, especially if curling accompanies browned margins. These plants can be sensitive to water quality and accumulated feeding salts, but one leaf cannot isolate the cause. [1] [2]
Choose the next step for your plant
Restore steady conditions
Keep the plant in indirect light away from drafts. If the mix is dry, water evenly and drain; if already wet, empty runoff and wait. Improve dry room air with an appropriate humidifier while keeping the pot out of standing water. [1]
Confirm pests before treating
If you see speckling or suspected mites, separate the plant and seek identification from Extension if needed. Follow product suitability instructions carefully if a treatment is recommended: calatheas can be sensitive to sprays, so a guessed pest treatment may add leaf injury. [2]
What to avoid
- Do not water again just because the leaves rise at night.
- Do not mist repeatedly as a substitute for checking root moisture.
- Do not apply homemade oil or detergent mixtures to delicate leaves.
What to watch next
Compare the same leaves over several days and watch the next new leaf as it opens. Dead edges remain even after conditions improve. If tightly curled new leaves, pest signs or loss of firmness continue, send Extension photographs of both leaf surfaces and your care history.
Common questions
Will a distilled-water trial solve every curled leaf?
No. It can help investigate suspected water sensitivity, but light, moisture and pests still need checking. Keep other conditions steady during a trial and judge later growth rather than expecting an existing brown margin to recover. [1]
Why are old leaves upright at night?
Members of this plant group naturally move their leaves in response to darkness. That normal movement should be distinguished from persistent rolling or deterioration. Two timed photographs can be more informative than one close-up taken in the evening. [1]
Sources and review
This guide was prepared with AI assistance and checked against the sources below. It has not been reviewed by a botanist. Conditions and plant responses vary; use the checks above to decide what applies. Read our editorial standards.
- NC State Extension Plant Toolbox: Calatheas and Goeppertia
Normal nighttime leaf movement, indirect light, stable warm conditions, moisture and water sensitivity.
- University of Maryland Extension response: Velvet Calathea problem
Watering assessment, feeding restraint, spider-mite inspection and sensitivity to pesticides.