Spirea Shrub Height Shipped:2 3 Feet Ideal for hardiness zone 8 now Ideal for hardiness zone 8 and their valuable timber The most distinctive and high value feature of spiraea is its flowers‚ which are small and delicate in pink and mostly arranged in clusters․ Depending on the species‚ the plants have several periods of blooming‚ usually starting in late spring and flowering into summer․ Their numerous flowers draw more species of bees and butterflies to areas with the plants‚ as well as adding motion to the landscape․ The flowers of many spirea cultivars remain in bloom for several weeks‚ and the time when a spirea is in full bloom is a cause for celebration among gardeners․ This makes it an important contributor to the numbers in the pollinator population and not only an aesthetically pleasing plant‚ but also an important part of a healthy garden․ others will arch out and reach a height of five or six feet․ The leaves are usually narrow with serrated margins and a dark green color․ Flowers sometimes appear on pendulous branches during spring and summer․ As a result‚ whether it is the green of summer or the colorful riot of the spirea flowers‚ the spiraea is much more than just a plant‚ it is a vibrant piece of garden․