The peace lily is a perennial flowering plant that produces large, white, showy flowers. Peace lily's botanical name is spathilhyllum. The plant's leaves are deep green and glossy; its blossoms resemble a single, large flower petal growing behind a nubby yellowish stalk. Peace lilies are temperamental plants with specific care requirements.
Plant peace lilies in soil that drains quickly. Peace lilies cannot tolerate wetness; water-logged soil causes the plant's roots to rot. If your potting soil packs too tightly or gets "muddy" when you water the peace lily, amend the potting soil by mixing in gardening sand or perlite at a ratio of 1 to 1.
Saturate the soil completely when you water peace lily plants. Allow the top 2 inches of soil to dry out before you water the plant again. Watering too frequently invites white flies and gnats, which thrive in moist soil conditions.
Fertilize peace lily plants every two weeks. Use a water-soluble fertilizer made for houseplants. Mix the fertilizer according to the directions on the package to avoid over- or under-fertilizing the plant.
Provide extra humidity for the plant. Peace lilies love humidity, but air conditioning and heating sap indoor humidity out of the air. Provide supplemental humidity by setting a dish of water within 2 feet of a peace lily plant, or mist the plant daily with a spritz bottle filled with filtered water.
Place peace lily plants in rooms that have west, east or northern exposure. Filter the sunlight through windows with eastern exposure with sheer curtains. If you prefer to have the windows unfiltered, place the plant several feet away from the window so that it still gets light but does not suffer sunburn.