Flower bulbs are underground storage organs that contain the nutrients and energy needed for a plant to grow. They are typically round or oval in shape and can vary in size. Common types of flower bulbs include tulips, daffodils, and hyacinths. These bulbs are planted in the soil, where they develop roots and produce flowers during the growing season. When planting flower bulbs, it's important to choose the right time, usually in the fall or spring, depending on the type. They require well-drained soil and adequate sunlight to thrive. After blooming, the foliage should be left to die back naturally, as it helps replenish the bulb for future growth.