Astilbe, also known as Astiligo, are generally burgundy/ pink/ white in color. In foreign countries, people often use whole bunches of astilbe as bridal bouquet.
Astilbe has elegant line-shape, and if you look closely to it, you will notice that it is composed of many small flowers like foam, which is full of fairy spirit.
Astilbe stems are slender and have a woody feel. Fresh Astilbe have a longer viewing period. When purchasing, pay attention to those small flowers that are like foam on the flower spikes, which are like small pearls when they are still fresh and bud.