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 Monstera Plant Food Spray 500ml Monstera 'Monkey Leaf' Kaufen beim Palmenmann Mammillaria candida Monstera Soil Mix Everything You Need To Know My grandma's 15 year old monstera flowering : r houseplants