When a plant is overwatered, better explained as watered too frequently, the soil stays too wet for too long and creates a low oxygen environment for the roots, resulting in root rot. I reduced the Domino Peace Lily for Sale Garden Goods Direct Monstera deliciosa : 11 inch x 4 inch Artificial Lavender Plant in White Pot, Purple, for Indoor Use, by Mainstays Macrame Hanger, Wooden Bar Holder Yellow