Hydrangeas are one of the most popular wedding flowers, and it's easy to see why: they are classic, pretty, and super versatile. White hydrangeas look fresh with green wedding florals and perky when paired with bright, punchy flowers at whimsical weddings. And in rich colors like mauve and purple, they are elegant and sophisticated. Here are some of my favorite hydrangea bouquets and centerpieces. Which is your favorite arrangement?