Hydrangeas are very popular both as cut flowers and plants for the garden because of their big, beautiful blooms. The name comes from the constant moisture required to keep the flowers happy, healthy and blooming. In Japan, they are said to be a sign of apology or gratitude because an emperor gave them as apologies to his maidens. The white Hydrangea flower is a symbol of purity, innocence and abundance. This flower can also symbolize bragging about wealth or boasting. Be careful not to send someone the wrong message with this flower colour, since these two meanings highly depend on the person you are sending it to.