Many kinds of flowering plants are planted into gardens to give them beautiful streaks of color during the summer months. Some of these flowering plants are shrubs. 

Perennial flowers are plants that live for multiple years. Their visible parts wither away during the winter, but their underground parts, such as bulbs and rhizomes, survive and grow into a new flower during the spring. 

The most common bulbous plants include the tulip, the crocus and the daffodil. These plants bloom during the early spring. Bulbous plants store energy in their underground bulbs, which they use to survive through the winter months. During the spring, the bulb grows into another flower. 

During the summer, many other kinds of flowering plants, such as peonies, meadowsweets and lilies, produce their beautiful flowers. Roses and cinquefoils bloom only towards the end of the growing season.