Watering a Peace Lily
- 1). Ensure your Peace Lily is in a pot or location with good drainage. For an indoor Peace Lily, you should consider a terra cotta pot with at least three drainage holes and a plastic tray underneath it to catch extra water. For outdoor Peace Lilies, make sure they are planted in areas that dry quickly after a rain or have adequate aeration. Add humus or compost to any outdoor soil that is heavy in clay.
- 2). Put your indoor Peace Lily in a spot where there will be adequate air for evaporation. Peace Lilies are known for cleaning the "bad" chemicals from the air that can instigate germ growth, so putting them in bedrooms can be beneficial. Since there are a few hybrids of Peace Lilies, consider their room for growth. For example, the "Sensation" hybrid can grow leaves almost six feet across.
- 3). Check the water you are using for heavy chlorine. Peace Lilies are sensitive to chlorine; if you live in a big city, chances are you have more chlorine in your water than normal. If you do, sit your water out for a day or two before using so that the chlorine dissipates.
- 4). Water your Peace Lily until the soil is evenly moist. Too much water will cause their roots to rot since lilies in general are sensitive to root disease. Too little water and the Peace Lily may not get all the necessary nutrients. Watering it at least once a week should be good in an average environment. If your Peace Lily is in a low-light room or slightly cooler air, it will not use as much water.
Source...