Monstera Plant Leaves Curling Up. Keep in mind that after a leaf develops it will not change. The next reason for the curling of the leaves on the monstera plant could be the sunlight.
Pot your Monstera in loose peaty soil to ensure proper drainage and aeration of the roots. Probably the most common reason your Monstera leaves are turning yellow is from the soil being too dry. The monstera deliciosa requires bright to medium indirect sunlight.
If your soil has gone too dry completely dry the oldest leaves will turn yellow first.
Keep in mind that after a leaf develops it will not change. You can also try increasing the light BUT be very careful. Curling may also result from too much fertilizer bad water quality disease or insect infestation too much or too little light a dry environment and even overwatering. As the plant matures the newer leaves will slowly have more and more fenestrations.
