WHY DOES THIS HAPPEN
Curled leaves on your Pilea can have a number of different causes. Luckily, it’s possible to try and determine what the particular cause of the issue is based on where the curling occurs on the plant.
If curled leaves begin to show on the bottom of your Pilea, this is typically a sign of it having received too much water.
Alternatively, if it is the leaves at the top which are curling, this could instead be a result of being exposed to too much sunlight. However, even if the curled leaves only seem to be showing at the top, it’s still a good idea to check on your watering to make sure that everything is okay, as it may still be a warning sign of potential overwatering.
If your watering and your light conditions all seem to be okay but your Pilea’s leaves are still curling, you may also want to check its drainage. Pileas always like to be planted in a pot with drainage holes, so if your pot does not have holes, you might want to consider repotting it.
However, sometimes your plant may appear to drain very slowly even if there are adequate drainage holes. If this is the case, it may be necessary to change the type of soil you are using, or you could try manually aerating it to stop the soil from becoming compacted. Usually an all-purpose potting mix is suitable for Chinese money plants.