If your monstera looks healthy but all of the sudden the leaves are curling in, its trying to tell you something! , The first thing I would check is the soil! , Most common cause of curling leaves is Succulents with Flowers Types, Care & Growing Guide Planet Desert Golden Sedum Stonecrop Two of my spider plant doing so well since I move them outside for summer. Spider Plant Easy Care Beauty with Air Purifying Power in 4 Pots