Peperomia plants grow best in bright indirect light provided by a west or east facing, window. They also do well under florescent lights. Insufficient light causes this slow growing plant to stop growing all together. Direct sunlight burns the leaves. When it comes to watering, allow the top 50% of the soil in a peperomia plant to dry out before watering. Over-watering, causing yellow leaves and soggy stems, is the main cause of serious peperomia problems. Root-rot, which causes the plant to die, is the direct result of over–watering. Peperomia plants do well when watered from the bottom.