To know if you need to water your peace lily, check the soil if it is still moist. Also check the leaves of the plant, if it is slightly drooping then you may want to add the frequency of watering the plant. Fertilizer. Adding fertilizer once a month would be enough. Make sure to use water-soluble houseplant fertilizer. These are typically categorized under Home and Gardening section or Favorite Activities. Aside from the right information, you can also meet people at this venue who are interested on the same activity as you are. There are also many websites that contain useful write-ups about this. These sites will teach you the step by step process on what to do in planting, maintaining and harvesting the flowers. For soil texture, plant them in places that are the first to dry out after a bout of rain. Like most plants, lilies would enjoy a good mulch, too. Pests In long stretches of cool and wet weather, lilies can be attacked by botrytis, a fungus that destroys lily leaves. You can take care of this by having plants correctly spaced among themselves in the garden. Small lily bulbs are planted 2 to 4 inches deep, and the larger bulbs about 4 to 6 inches deep. Soil Your garden soil for your lilies should drain well. Mix in lots of organic matter to the clay soil to have a raised area with improved drainage. Finally, add this organic matter into light and sandy soil. This hybrid species of some of the East Asian lily species are widely famous for their robust growth and their extremely alluring fragrance (that can overwhelm the whole garden), including, of course, their elegant looks. Casablanca lilies are often mistaken for other varieties, but their characteristics and features always stand out. The next best thing aside from clay is sand or the ordinary garden soil. Although it doesn t have the same retention properties such as those in clay, sand can ensure the life of indoor lilies for as long as you replenish it with the right amount of organic matter. The area where it would be placed. Lilies are supposed to be placed outdoors where sunlight is directed at it.