One possible reason for your cyclamen leaves curling under is that they are getting too much sun.

Cyclamen Leaves Curling (12 Causes and Solutions)

HOUSEPLANTS, PLANT CLINIC / By

If you notice your cyclamen’s leaves curling, it’s not necessarily a sign of poor health. There are a number of reasons why leaves curl, and most of them are easily remedied. Here are 12 possible causes of leaf curling in cyclamen, along with solutions for each.