Flower bulbs that you have bought for naturalizing can simply be left undisturbed. These flower bulbs will come back year after year and even increase in number. As for other flower bulbs, never remove them from the soil right after they flower but wait at least until their foliage has died back entirely. In this way, you give the flower bulbs a chance to grow and store the energy they will need for next year. Not only is the lifting and storing of flower bulbs a difficult chore but it frequently leads to disappointing results as well.