This process also discourages the development of weeds and it will help the soil to easily absorb the nutrition that you will provide it with. In order to produce good and flouncy blooms, the plants need a lot of nourishment. Nitrogen must be provided on the leaves once these are already growing fast. But, to those who want to grow lilies inside their house, they can still do by ensuring that there is enough light or sunlight, air and moisture to keep these alive. When buying and transporting lilies for the first time, make sure the plant is well-kept by placing it in a box or wrapped in newspaper to ensure its stem will not break or its leaves will not be torn in anyway. In finding true lilies, it is best to check their characteristics such as having stiff stems with narrow strap; large flowers that develop at the tip of the stem; either trumpet, bowl or bell shaped that come with petals that are reflexed. You will also know that the plant in front of you is a true lily if it nods downwards, faces outwards, or turns upwards. According to experts, it is best to buy a bulb with a sprout of not more than one inch. what you need are solid roots with the sprout just developing. Check those garden sacks that you buy from garden centers. Aside from checking the growth of the sprout, you also need to see if the bulbs are dried out. You could replant these bulbs, give them away or sell them. You harvest new lily bulbs in every three years. One of the best indicator that it is time to divide or harvest the lily bulb is when the plants are not giving flowers just like before. How to divide the lilies? Dig the entire plant and loosen the dirt. Experts say that soil selection is very important aspect in maintaining indoor lilies because this will determine the success and failure of your project. Another major factor that affects the life of indoor lilies is the container and the process of repotting it. First time gardeners should be aware that growing indoor lilies need repotting every now and then because its roots already filled up the space of the original pot.