Spanish Crown Prince Felipe is due to marry TV news anchor Letizia Ortiz on May 22.
The Spanish newspaper said Saturday that the floral arrangements will emblazon the route of the royal procession in the center of the Spanish capital.
Meanwhile, 192 full grown cypress trees, the symbol of eternal life, were being planted at Atocha railway station this week-end, equal to the number of dead in the March 11 terrorist train bombings.
The attack has cast a somber shadow over the royal wedding, and such planned public celebrations as a huge firework display on the night of the nuptials have been canceled.
However, city authorities said they were hoping the marriage of the popular Prince Felipe would lift the spirits of Madrid´s citizens.