Description The spathiphyllum, better known as the peace lily, is an easy-to-care-for and low-light houseplant. It’s fairly adaptable and known to be an air-purifying plant. Care instructions: Peace lilies do well in partial shade. Water at least once a week and keep the soil moist. Water less frequently in winter. *Note that the peace lily is poisonous to cats and dogs. Pot diameter: 15cm. No pot cover included.