The peace lily is a tropical, evergreen plant that thrives on the forest floor, where it receives dappled sunlight and consistent moisture. Replicating these conditions in the home is the key to getting your peace lily to be happy and healthy. With enough light, peace lilies may produce white to off-white flowers in the early summer and continue to bloom throughout the year. Use a well-draining, all-purpose potting soil. Repotting annually in the spring is good for the peace lily, as the plant will appreciate the refreshed soil.